12444 Prothoon: Difference between revisions
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{{Infobox planet |
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#REDIRECT [[List of minor planets: 12001–13000#444]] |
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| minorplanet = yes |
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| name = 12444 Prothoon |
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| background = #C2FFFF |
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| image = |
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| image_size = |
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| caption = |
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| discovery_ref =  <ref name="MPC-object" /> |
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| discoverer = [[Eric Elst|E. W. Elst]] |
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| discovery_site = [[La Silla Observatory|La Silla Obs.]] |
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| discovered = 15 April 1996 |
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| mpc_name = (12444) Prothoon |
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| alt_names = {{mp|1996 GE|19}} |
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| pronounced = {{IPAc-en|p|r|ɒ|ˈ|θ|oʊ|ɒ|n}} {{Respell|pro|THOE|on}} |
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| named_after = [[Prothoon]] <ref name="MPC-object" /><br />{{small|(Greek mythology)}} |
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| mp_category = [[Jupiter trojan]] <ref name="MPC-object" /><ref name="jpldata" /><ref name="lcdb" /><br />{{nowrap|[[Trojan camp|Trojan]] <ref name="MPC-Jupiter-Trojans" /><ref name="AstDys-object" />{{·}}[[Background asteroid|background]] <ref name="AstDys-object" />}} |
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| orbit_ref =  <ref name="jpldata" /> |
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| epoch = 23 March 2018 ([[Julian day|JD]] 2458200.5) |
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| uncertainty = 0 |
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| observation_arc = 22.17 [[Julian year (astronomy)|yr]] (8,096 d) |
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| aphelion = 5.6206 [[Astronomical unit|AU]] |
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| perihelion = 4.8680 AU |
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| semimajor = 5.2443 AU |
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| eccentricity = 0.0718 |
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| period = 12.01 yr (4,387 d) |
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| mean_anomaly = 240.44[[Degree (angle)|°]] |
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| mean_motion = {{Deg2DMS|0.0821|sup=ms}} / day |
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| inclination = 30.827° |
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| asc_node = 213.23° |
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| arg_peri = 64.656° |
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| jupiter_moid = 0.3876 AU |
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| tisserand = 2.7120 |
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| mean_diameter = {{val|62.41|2.92|ul=km}}<ref name="AKARI" /><br />{{val|63.84|0.84|u=km}}<ref name="Grav-2012" /><ref name="WISE" /><br />{{val|64.31|15.8|u=km}}<ref name="SIMPS" /><br />{{val|64.41|u=km}} {{small|(derived)}}<ref name="lcdb" /> |
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| rotation = {{val|15.82|0.01|ul=h}}<ref name="French-2012" /> |
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| albedo = {{val|0.039|0.030}}<ref name="SIMPS" /><br />{{val|0.043|0.004}}<ref name="AKARI" /><br />{{val|0.0467}} {{small|(derived)}}<ref name="lcdb" /><br />{{val|0.052|0.008}}<ref name="Grav-2012" /><ref name="WISE" /> |
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| spectral_type = [[C-type asteroid|C]] {{small|(assumed)}}<ref name="lcdb" /> |
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| abs_magnitude = 9.8<ref name="MPC-object" /><ref name="jpldata" /><ref name="WISE" /><br />9.9<ref name="lcdb" /><br />{{val|9.95|0.31}}<ref name="Veres-2015" /><br />10.10<ref name="AKARI" /><ref name="SIMPS" /> |
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}} |
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'''12444 Prothoon''' ({{IPAc-en|p|r|ɒ|ˈ|θ|oʊ|ɒ|n}} {{Respell|pro|THOE|on}}), provisional designation ''{{mp|1996 GE|19}}'', is a large [[Jupiter trojan]] from the [[Trojan camp]], approximately {{convert|64|km|mi|abbr=off|sigfig=2|sp=us}} in diameter. It was discovered on 15 April 1996, by Belgian astronomer [[Eric Elst]] at the [[La Silla Observatory]] in northern Chile.<ref name="MPC-object" /> The assumed [[C-type asteroid]] is one of the [[#Largest Jupiter trojans|60 largest Jupiter trojans]] has a [[rotation period]] of 15.82 hours.<ref name="lcdb" /> It was named after [[Prothoon]] from Greek mythology.<ref name="MPC-object" /> |
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{{NASTRO comment}} |
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== Orbit and classification == |
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''Prothoon'' is a dark Jovian [[asteroid]] orbiting in the trailering [[Trojan camp]] at Jupiter's {{L5}} [[Lagrangian point]], 60[[degree (angle)|°]] behind on the Gas Giant's orbit in a [[Orbital resonance|1:1 resonance]] ''(see [[Trojans in astronomy]])''. This Jupiter trojan is also a non-[[Asteroid family|family]] asteroid of the [[background asteroid|Jovian background population]].<ref name="AstDys-object" /><ref name="Ferret" /> It orbits the Sun at a distance of 4.9–5.6 [[Astronomical unit|AU]] once every 12.01 years (4,387 days; [[semi-major axis]] of 5.24 AU). Its orbit has an [[orbital eccentricity|eccentricity]] of 0.07 and an [[orbital inclination|inclination]] of 31[[Degree (angle)|°]] with respect to the [[ecliptic]].<ref name="jpldata" /> The body's [[observation arc]] begins with a [[precovery]] taken at La Silla in March 1996, one month prior to its official discovery observation.<ref name="MPC-object" /> |
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== Physical characteristics == |
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''Prothoon'' is an assumed [[C-type asteroid]].<ref name="lcdb" /> |
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=== Rotation period === |
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In August 2011, a rotational [[lightcurve]] of ''Prothoon'' was obtained from [[Photometry (astronomy)|photometric]] observations by [[Robert D. Stephens|Robert Stephens]] at the Goat Mountain Astronomical Research Station {{Obscode|G79}} in California. Lightcurve analysis gave a [[rotation period]] of 15.82 hours with a brightness amplitude of 0.20 [[Magnitude (astronomy)|magnitude]] ({{small|[[LCDB quality code|U=3-]]}}).<ref name="lcdb" /><ref name="French-2012" /> |
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=== Diameter and albedo === |
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According to the surveys carried out by the Japanese [[Akari (satellite)|Akari satellite]] and the [[NEOWISE]] mission of NASA's [[Wide-field Infrared Survey Explorer]], ''Prothoon'' measures between 62.41 and 64.31 kilometers in diameter and its surface has an [[astronomical albedo|albedo]] between 0.039 and 0.052.<ref name="AKARI" /><ref name="Grav-2012" /><ref name="WISE" /><ref name="SIMPS" /> |
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The ''Collaborative Asteroid Lightcurve Link'' derives an albedo of 0.0467 and a diameter of 64.41 kilometers based on an [[absolute magnitude]] of 9.9.<ref name="lcdb" /> |
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{{Largest Jupiter trojans}} |
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== Naming == |
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This [[minor planet]] was named from [[Greek mythology]] after the Trojan warrior [[Prothoon]], who was killed by [[Teucer]] during the [[Trojan War]].<ref name="MPC-object" /> The official naming citation was published by the [[Minor Planet Center]] on 6 January 2003 ({{small|[[Minor Planet Circulars|M.P.C.]] 47300}}).<ref name="MPC-Circulars-Archive" /> |
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== References == |
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{{reflist|30em|refs= |
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<ref name="jpldata">{{cite web |
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|type = 2018-05-24 last obs. |
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|title = JPL Small-Body Database Browser: 12444 Prothoon (1996 GE19) |
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|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012444 |
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|publisher = [[Jet Propulsion Laboratory]] |
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|accessdate = 8 June 2018}}</ref> |
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<ref name="MPC-object">{{cite web |
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|title = 12444 Prothoon (1996 GE19) |
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|work = Minor Planet Center |
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|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=12444 |
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|accessdate = 8 June 2018}}</ref> |
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<ref name="MPC-Jupiter-Trojans">{{cite web |
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|title = List of Jupiter Trojans |
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|work = Minor Planet Center |
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|date = 30 May 2018 |
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|url = https://www.minorplanetcenter.net/iau/lists/JupiterTrojans.html |
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|accessdate = 6 June 2018}}</ref> |
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<ref name="MPC-Circulars-Archive">{{cite web |
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|title = MPC/MPO/MPS Archive |
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|work = Minor Planet Center |
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|url = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html |
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|accessdate = 8 June 2018}}</ref> |
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<ref name="Grav-2012">{{cite journal |
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|first1 = T. |last1 = Grav |
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|first2 = A. K. |last2 = Mainzer |
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|first3 = J. M. |last3 = Bauer |
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|first4 = J. R. |last4 = Masiero |
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|first5 = C. R. |last5 = Nugent |
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|date = November 2012 |
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|title = WISE/NEOWISE Observations of the Jovian Trojan Population: Taxonomy |
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|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759...49G |
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|journal = The Astrophysical Journal |
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|volume = 759 |
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|issue = 1 |
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|page = 10 |
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|bibcode = 2012ApJ...759...49G |
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|doi = 10.1088/0004-637X/759/1/49 |
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|arxiv = 1209.1549 |
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|access-date= 8 June 2018}}</ref> |
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<ref name="AstDys-object">{{cite web |
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|title = Asteroid (12444) Prothoon – Proper elements |
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|publisher = AstDyS-2, Asteroids – Dynamic Site |
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|url = http://hamilton.dm.unipi.it/astdys/index.php?n=12444&pc=1.1.6 |
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|accessdate = 8 June 2018}}</ref> |
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<ref name="Ferret">{{cite web |
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|title = Asteroid 12444 Prothoon |
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|work = Small Bodies Data Ferret |
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|url = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=12444+Prothoon |
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|accessdate = 8 June 2018}}</ref> |
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<ref name="SIMPS">{{cite journal |
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|first1 = E. F. |last1 = Tedesco |
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|first2 = P. V. |last2 = Noah |
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|first3 = M. |last3 = Noah |
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|first4 = S. D. |last4 = Price |
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|date = October 2004 |
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|title = IRAS Minor Planet Survey V6.0 |
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|url = https://sbn.psi.edu/pds/asteroid/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab |
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|journal = NASA Planetary Data System |
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|bibcode = 2004PDSS...12.....T |
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|access-date= 8 June 2018}}</ref> |
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<ref name="lcdb">{{cite web |
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|title = LCDB Data for (12444) Prothoon |
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|publisher = Asteroid Lightcurve Database (LCDB) |
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|url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=12444%7CProthoon |
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|accessdate = 8 June 2018}}</ref> |
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<ref name="WISE">{{cite journal |
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|display-authors = 6 |
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|first1 = A. |last1 = Mainzer |
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|first2 = T. |last2 = Grav |
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|first3 = J. |last3 = Masiero |
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|first4 = E. |last4 = Hand |
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|first5 = J. |last5 = Bauer |
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|first6 = D. |last6 = Tholen |
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|first7 = R. S. |last7 = McMillan |
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|first8 = T. |last8 = Spahr |
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|first9 = R. M. |last9 = Cutri |
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|first10 = E. |last10 = Wright |
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|first11 = J. |last11 = Watkins |
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|first12 = W. |last12 = Mo |
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|first13 = C. |last13 = Maleszewski |
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|date = November 2011 |
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|title = NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results |
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|url = https://arxiv.org/pdf/1109.6407v1.pdf |
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|journal = The Astrophysical Journal |
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|volume = 741 |
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|issue = 2 |
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|page = 25 |
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|bibcode = 2011ApJ...741...90M |
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|doi = 10.1088/0004-637X/741/2/90 |
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|arxiv = 1109.6407 |
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|access-date= 8 June 2018}} ([http://iopscience.iop.org/0004-637X/741/2/68/fulltext/apj398969t1_mrt.txt catalog])</ref> |
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<ref name="AKARI">{{cite journal |
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|display-authors = 6 |
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|first1 = Fumihiko |last1 = Usui |
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|first2 = Daisuke |last2 = Kuroda |
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|first3 = Thomas G. |last3 = Müller |
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|first4 = Sunao |last4 = Hasegawa |
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|first5 = Masateru |last5 = Ishiguro |
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|first6 = Takafumi |last6 = Ootsubo |
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|first7 = Daisuke |last7 = Ishihara |
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|first8 = Hirokazu |last8 = Kataza |
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|first9 = Satoshi |last9 = Takita |
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|first10 = Shinki |last10 = Oyabu |
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|first11 = Munetaka |last11 = Ueno |
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|first12 = Hideo |last12 = Matsuhara |
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|first13 = Takashi |last13 = Onaka |
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|date = October 2011 |
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|title = Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey |
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|url = http://pasj.oxfordjournals.org/content/63/5/1117.full.pdf+html |
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|journal = Publications of the Astronomical Society of Japan |
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|volume = 63 |
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|issue = 5 |
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|pages = 1117–1138 |
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|bibcode = 2011PASJ...63.1117U |
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|doi = 10.1093/pasj/63.5.1117 |
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|access-date= 8 June 2018}} ([http://vizier.cfa.harvard.edu/viz-bin/VizieR?-source=J/PASJ/63/1117 online catalog])</ref> |
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<ref name="French-2012">{{Cite journal |
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|first1 = Linda M. |last1 = French |
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|first2 = Robert D. |last2 = Stephens |
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|first3 = Daniel R. |last3 = Coley |
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|first4 = Ralph |last4 = Megna |
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|first5 = Lawrence H. |last5 = Wasserman |
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|date = July 2012 |
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|title = Photometry of 17 Jovian Trojan Asteroids |
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|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012MPBu...39..183F |
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|journal = The Minor Planet Bulletin |
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|volume = 39 |
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|issue = 3 |
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|pages = 183–187 |
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|issn = 1052-8091 |
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|bibcode = 2012MPBu...39..183F |
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|access-date= 8 June 2018}}</ref> |
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<ref name="Veres-2015">{{cite journal |
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|display-authors = 6 |
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|first1 = Peter |last1 = Veres |
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|first2 = Robert |last2 = Jedicke |
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|first3 = Alan |last3 = Fitzsimmons |
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|first4 = Larry |last4 = Denneau |
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|first5 = Mikael |last5 = Granvik |
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|first6 = Bryce |last6 = Bolin |
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|first7 = Serge |last7 = Chastel |
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|first8 = Richard J. |last8 = Wainscoat |
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|first9 = William S. |last9 = Burgett |
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|first10 = Kenneth C. |last10 = Chambers |
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|first11 = Heather |last11 = Flewelling |
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|first12 = Nick |last12 = Kaiser |
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|first13 = Eugen A. |last13 = Magnier |
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|first14 = Jeff S. |last14 = Morgan |
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|first15 = Paul A. |last15 = Price |
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|first16 = John L. |last16 = Tonry |
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|first17 = Christopher |last17 = Waters |
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|date = November 2015 |
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|title = Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results |
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|url = https://arxiv.org/pdf/1506.00762.pdf |
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|journal = Icarus |
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|volume = 261 |
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|pages = 34–47 |
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|bibcode = 2015Icar..261...34V |
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|doi = 10.1016/j.icarus.2015.08.007 |
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|arxiv = 1506.00762 |
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|access-date= 8 June 2018}}</ref> |
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}} <!-- end of reflist --> |
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== External links == |
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* [http://www.minorplanet.info/PHP/lcdbsummaryquery.php Asteroid Lightcurve Database (LCDB)], query form ([http://www.minorplanet.info/lightcurvedatabase.html info]) |
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* [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books |
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* [http://www.minorplanetcenter.net/iau/lists/NumberedMPs010001.html Discovery Circumstances: Numbered Minor Planets (10001)-(15000)] – Minor Planet Center |
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* {{AstDys|12444}} |
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* {{JPL small body}} |
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{{Use dmy dates|date=June 2018}} |
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{{Minor planets navigator |12443 Paulsydney |number=12444 |12445 Sirataka}} |
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{{Small Solar System bodies}} |
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{{DEFAULTSORT:Prothoon}} |
{{DEFAULTSORT:Prothoon}} |
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[[Category:Jupiter trojans (Trojan camp)|012444]] |
[[Category:Jupiter trojans (Trojan camp)|012444]] |
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[[Category: |
[[Category:Numbered minor planets|012444]] |
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[[Category:Discoveries by Eric Walter Elst]] |
[[Category:Discoveries by Eric Walter Elst]] |
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[[Category: |
[[Category:Minor planets named from Greek mythology]] |
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[[Category:Minor planet redirects|12444 Prothoon]] |
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[[Category:Named minor planets]] |
[[Category:Named minor planets]] |
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[[Category:Astronomical objects discovered in 1996|19960415]] |
Revision as of 06:26, 8 June 2018
Discovery [1] | |
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Discovered by | E. W. Elst |
Discovery site | La Silla Obs. |
Discovery date | 15 April 1996 |
Designations | |
(12444) Prothoon | |
Pronunciation | /prɒˈθoʊɒn/ pro-THOE-on |
Named after | Prothoon [1] (Greek mythology) |
1996 GE19 | |
Jupiter trojan [1][2][3] Trojan [4][5] · background [5] | |
Orbital characteristics [2] | |
Epoch 23 March 2018 (JD 2458200.5) | |
Uncertainty parameter 0 | |
Observation arc | 22.17 yr (8,096 d) |
Aphelion | 5.6206 AU |
Perihelion | 4.8680 AU |
5.2443 AU | |
Eccentricity | 0.0718 |
12.01 yr (4,387 d) | |
240.44° | |
0° 4m 55.56s / day | |
Inclination | 30.827° |
213.23° | |
64.656° | |
Jupiter MOID | 0.3876 AU |
TJupiter | 2.7120 |
Physical characteristics | |
62.41±2.92 km[6] 63.84±0.84 km[7][8] 64.31±15.8 km[9] 64.41 km (derived)[3] | |
15.82±0.01 h[10] | |
0.039±0.030[9] 0.043±0.004[6] 0.0467 (derived)[3] 0.052±0.008[7][8] | |
C (assumed)[3] | |
9.8[1][2][8] 9.9[3] 9.95±0.31[11] 10.10[6][9] | |
12444 Prothoon (/prɒˈθoʊɒn/ pro-THOE-on), provisional designation 1996 GE19, is a large Jupiter trojan from the Trojan camp, approximately 64 kilometers (40 miles) in diameter. It was discovered on 15 April 1996, by Belgian astronomer Eric Elst at the La Silla Observatory in northern Chile.[1] The assumed C-type asteroid is one of the 60 largest Jupiter trojans has a rotation period of 15.82 hours.[3] It was named after Prothoon from Greek mythology.[1]
Orbit and classification
Prothoon is a dark Jovian asteroid orbiting in the trailering Trojan camp at Jupiter's L5 Lagrangian point, 60° behind on the Gas Giant's orbit in a 1:1 resonance (see Trojans in astronomy). This Jupiter trojan is also a non-family asteroid of the Jovian background population.[5][12] It orbits the Sun at a distance of 4.9–5.6 AU once every 12.01 years (4,387 days; semi-major axis of 5.24 AU). Its orbit has an eccentricity of 0.07 and an inclination of 31° with respect to the ecliptic.[2] The body's observation arc begins with a precovery taken at La Silla in March 1996, one month prior to its official discovery observation.[1]
Physical characteristics
Prothoon is an assumed C-type asteroid.[3]
Rotation period
In August 2011, a rotational lightcurve of Prothoon was obtained from photometric observations by Robert Stephens at the Goat Mountain Astronomical Research Station (G79) in California. Lightcurve analysis gave a rotation period of 15.82 hours with a brightness amplitude of 0.20 magnitude (U=3-).[3][10]
Diameter and albedo
According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Prothoon measures between 62.41 and 64.31 kilometers in diameter and its surface has an albedo between 0.039 and 0.052.[6][7][8][9]
The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0467 and a diameter of 64.41 kilometers based on an absolute magnitude of 9.9.[3]
Largest Jupiter Trojans by survey(A) (mean-diameter in kilometers; YoD: Year of Discovery) | |||||||||
---|---|---|---|---|---|---|---|---|---|
Designation | H | WISE | IRAS | Akari | Ln | RP | V–I | YoD | Ref |
624 Hektor | 7.2 | 225 | 233 | 230.99 | L4 | 6.92 | 0.930 | 1907 | list |
617 Patroclus | 8.19 | 140.362 | 140.92 | 140.85 | L5 | 102.80 | 0.830 | 1906 | list |
911 Agamemnon | 7.89 | 131.038 | 166.66 | 185.30 | L4 | 6.59 | 0.980 | 1919 | list |
588 Achilles | 8.67 | 130.099 | 135.47 | 133.22 | L4 | 7.31 | 0.940 | 1906 | list |
3451 Mentor | 8.4 | 126.288 | 116.30 | 117.91 | L5 | 7.70 | 0.770 | 1984 | list |
3317 Paris | 8.3 | 118.790 | 116.26 | 120.45 | L5 | 7.09 | 0.950 | 1984 | list |
1867 Deiphobus | 8.3 | 118.220 | 122.67 | 131.31 | L5 | 58.66 | 0.930 | 1971 | list |
1172 Äneas | 8.33 | 118.020 | 142.82 | 148.66 | L5 | 8.71 | 0.950 | 1930 | list |
1437 Diomedes | 8.3 | 117.786 | 164.31 | 172.60 | L4 | 24.49 | 0.810 | 1937 | list |
1143 Odysseus | 7.93 | 114.624 | 125.64 | 130.81 | L4 | 10.11 | 0.860 | 1930 | list |
2241 Alcathous | 8.64 | 113.682 | 114.63 | 118.87 | L5 | 7.69 | 0.940 | 1979 | list |
659 Nestor | 8.99 | 112.320 | 108.87 | 107.06 | L4 | 15.98 | 0.790 | 1908 | list |
3793 Leonteus | 8.7 | 112.046 | 86.26 | 87.58 | L4 | 5.62 | 0.780 | 1985 | list |
3063 Makhaon | 8.4 | 111.655 | 116.14 | 114.34 | L4 | 8.64 | 0.830 | 1983 | list |
1583 Antilochus | 8.6 | 108.842 | 101.62 | 111.69 | L4 | 31.54 | 0.950 | 1950 | list |
884 Priamus | 8.81 | 101.093 | 96.29 | 119.99 | L5 | 6.86 | 0.900 | 1917 | list |
1208 Troilus | 8.99 | 100.477 | 103.34 | 111.36 | L5 | 56.17 | 0.740 | 1931 | list |
1173 Anchises | 8.89 | 99.549 | 126.27 | 120.49 | L5 | 11.60 | 0.780 | 1930 | list |
2207 Antenor | 8.89 | 97.658 | 85.11 | 91.32 | L5 | 7.97 | 0.950 | 1977 | list |
2363 Cebriones | 9.11 | 95.976 | 81.84 | 84.61 | L5 | 20.05 | 0.910 | 1977 | list |
4063 Euforbo | 8.7 | 95.619 | 102.46 | 106.38 | L4 | 8.85 | 0.950 | 1989 | list |
2357 Phereclos | 8.94 | 94.625 | 94.90 | 98.45 | L5 | 14.39 | 0.960 | 1981 | list |
4709 Ennomos | 8.5 | 91.433 | 80.85 | 80.03 | L5 | 12.28 | 0.690 | 1988 | list |
2797 Teucer | 8.7 | 89.430 | 111.14 | 113.99 | L4 | 10.15 | 0.920 | 1981 | list |
2920 Automedon | 8.8 | 88.574 | 111.01 | 113.11 | L4 | 10.21 | 0.950 | 1981 | list |
15436 Dexius | 9.1 | 87.646 | 85.71 | 78.63 | L4 | 8.97 | 0.870 | 1998 | list |
3596 Meriones | 9.2 | 87.380 | 75.09 | 73.28 | L4 | 12.96 | 0.830 | 1985 | list |
2893 Peiroos | 9.23 | 86.884 | 87.46 | 86.76 | L5 | 8.96 | 0.950 | 1975 | list |
4086 Podalirius | 9.1 | 85.495 | 86.89 | 85.98 | L4 | 10.43 | 0.870 | 1985 | list |
4060 Deipylos | 9.3 | 84.043 | 79.21 | 86.79 | L4 | 9.30 | 0.760 | 1987 | list |
1404 Ajax | 9.3 | 83.990 | 81.69 | 96.34 | L4 | 29.38 | 0.960 | 1936 | list |
4348 Poulydamas | 9.5 | 82.032 | 70.08 | 87.51 | L5 | 9.91 | 0.840 | 1988 | list |
5144 Achates | 9.0 | 80.958 | 91.91 | 89.85 | L5 | 5.96 | 0.920 | 1991 | list |
4833 Meges | 8.9 | 80.165 | 87.33 | 89.39 | L4 | 14.25 | 0.940 | 1989 | list |
2223 Sarpedon | 9.41 | 77.480 | 94.63 | 108.21 | L5 | 22.74 | 0.880 | 1977 | list |
4489 Dracius | 9.0 | 76.595 | 92.93 | 95.02 | L4 | 12.58 | 0.950 | 1988 | list |
2260 Neoptolemus | 9.31 | 76.435 | 71.65 | 81.28 | L4 | 8.18 | 0.950 | 1975 | list |
5254 Ulysses | 9.2 | 76.147 | 78.34 | 80.00 | L4 | 28.72 | 0.970 | 1986 | list |
3708 Socus | 9.3 | 75.661 | 79.59 | 76.75 | L5 | 6.55 | 0.980 | 1974 | list |
2674 Pandarus | 9.1 | 74.267 | 98.10 | 101.72 | L5 | 8.48 | 1.000 | 1982 | list |
3564 Talthybius | 9.4 | 73.730 | 68.92 | 74.11 | L4 | 40.59 | 0.900 | 1985 | list |
4834 Thoas | 9.1 | 72.331 | 86.82 | 96.21 | L4 | 18.19 | 0.950 | 1989 | list |
7641 Cteatus | 9.4 | 71.839 | 68.97 | 75.28 | L4 | 27.77 | 0.980 | 1986 | list |
3540 Protesilaos | 9.3 | 70.225 | 76.84 | 87.66 | L4 | 8.95 | 0.940 | 1973 | list |
11395 Iphinous | 9.8 | 68.977 | 64.71 | 67.78 | L4 | 17.38 | – | 1998 | list |
4035 Thestor | 9.6 | 68.733 | 68.23 | 66.99 | L4 | 13.47 | 0.970 | 1986 | list |
5264 Telephus | 9.4 | 68.472 | 73.26 | 81.38 | L4 | 9.53 | 0.970 | 1991 | list |
1868 Thersites | 9.5 | 68.163 | 70.08 | 78.89 | L4 | 10.48 | 0.960 | 1960 | list |
9799 Thronium | 9.6 | 68.033 | 64.87 | 72.42 | L4 | 21.52 | 0.910 | 1996 | list |
4068 Menestheus | 9.5 | 67.625 | 62.37 | 68.46 | L4 | 14.40 | 0.950 | 1973 | list |
23135 Pheidas | 9.9 | 66.230 | 58.29 | 68.50 | L4 | 8.69 | 0.860 | 2000 | list |
2456 Palamedes | 9.3 | 65.916 | 91.66 | 99.60 | L4 | 7.24 | 0.920 | 1966 | list |
3709 Polypoites | 9.1 | 65.297 | 99.09 | 85.23 | L4 | 10.04 | 1.000 | 1985 | list |
1749 Telamon | 9.5 | 64.898 | 81.06 | 69.14 | L4 | 16.98 | 0.970 | 1949 | list |
3548 Eurybates | 9.6 | 63.885 | 72.14 | 68.40 | L4 | 8.71 | 0.730 | 1973 | list |
4543 Phoinix | 9.7 | 63.836 | 62.79 | 69.54 | L4 | 38.87 | 1.200 | 1989 | list |
12444 Prothoon | 9.8 | 63.835 | 64.31 | 62.41 | L5 | 15.82 | – | 1996 | list |
4836 Medon | 9.5 | 63.277 | 67.73 | 78.70 | L4 | 9.82 | 0.920 | 1989 | list |
16070 Charops | 9.7 | 63.191 | 64.13 | 68.98 | L5 | 20.24 | 0.960 | 1999 | list |
15440 Eioneus | 9.6 | 62.519 | 66.48 | 71.88 | L4 | 21.43 | 0.970 | 1998 | list |
4715 Medesicaste | 9.7 | 62.097 | 63.91 | 65.93 | L5 | 8.81 | 0.850 | 1989 | list |
34746 Thoon | 9.8 | 61.684 | 60.51 | 63.63 | L5 | 19.63 | 0.950 | 2001 | list |
38050 Bias | 9.8 | 61.603 | 61.04 | 50.44 | L4 | 18.85 | 0.990 | 1998 | list |
5130 Ilioneus | 9.7 | 60.711 | 59.40 | 52.49 | L5 | 14.77 | 0.960 | 1989 | list |
5027 Androgeos | 9.6 | 59.786 | 57.86 | n.a. | L4 | 11.38 | 0.910 | 1988 | list |
6090 Aulis | 9.4 | 59.568 | 74.53 | 81.92 | L4 | 18.48 | 0.980 | 1989 | list |
5648 Axius | 9.7 | 59.295 | 63.91 | n.a. | L5 | 37.56 | 0.900 | 1990 | list |
7119 Hiera | 9.7 | 59.150 | 76.40 | 77.29 | L4 | 400 | 0.950 | 1989 | list |
4805 Asteropaios | 10.0 | 57.647 | 53.16 | 43.44 | L5 | 12.37 | – | 1990 | list |
16974 Iphthime | 9.8 | 57.341 | 55.43 | 57.15 | L4 | 78.9 | 0.960 | 1998 | list |
4867 Polites | 9.8 | 57.251 | 58.29 | 64.29 | L5 | 11.24 | 1.010 | 1989 | list |
2895 Memnon | 10.0 | 56.706 | 55.67 | n.a. | L5 | 7.50 | 0.710 | 1981 | list |
4708 Polydoros | 9.9 | 54.964 | 55.67 | n.a. | L5 | 7.52 | 0.960 | 1988 | list |
(21601) 1998 XO89 | 10.0 | 54.909 | 55.67 | 56.08 | L4 | 12.65 | 0.970 | 1998 | list |
12929 Periboea | 9.9 | 54.077 | 61.04 | 55.34 | L5 | 9.27 | 0.880 | 1999 | list |
17492 Hippasos | 10.0 | 53.975 | 55.67 | n.a. | L5 | 17.75 | – | 1991 | list |
5652 Amphimachus | 10.1 | 53.921 | 53.16 | 52.48 | L4 | 8.37 | 1.050 | 1992 | list |
2759 Idomeneus | 9.9 | 53.676 | 61.01 | 52.55 | L4 | 32.38 | 0.910 | 1980 | list |
5258 Rhoeo | 10.2 | 53.275 | 50.77 | n.a. | L4 | 19.85 | 1.010 | 1989 | list |
(12126) 1999 RM11 | 10.1 | 53.202 | n.a. | n.a. | L5 | n.a. | ? | 1999 | list |
(15502) 1999 NV27 | 10.0 | 53.100 | 55.67 | 50.86 | L5 | 15.13 | 0.875 | 1999 | list |
4754 Panthoos | 10.0 | 53.025 | 53.15 | 56.96 | L5 | 27.68 | – | 1977 | list |
4832 Palinurus | 10.0 | 52.058 | 53.16 | n.a. | L5 | 5.32 | 1.000 | 1988 | list |
5126 Achaemenides | 10.5 | 51.922 | 44.22 | 48.57 | L4 | 53.02 | – | 1989 | list |
3240 Laocoon | 10.2 | 51.695 | 50.77 | n.a. | L5 | 11.31 | 0.880 | 1978 | list |
4902 Thessandrus | 9.8 | 51.263 | 61.04 | 71.79 | L4 | 738 | 0.960 | 1989 | list |
11552 Boucolion | 10.1 | 51.136 | 53.16 | 53.91 | L5 | 32.44 | – | 1993 | list |
(20729) 1999 XS143 | 10.4 | 50.961 | 46.30 | n.a. | L4 | 5.72 | 1.000 | 1999 | list |
6545 Leitus | 10.1 | 50.951 | 53.16 | n.a. | L4 | 16.26 | 0.910 | 1986 | list |
4792 Lykaon | 10.1 | 50.870 | 53.16 | n.a. | L5 | 40.09 | 0.960 | 1988 | list |
21900 Orus | 10.0 | 50.810 | 55.67 | 53.87 | L4 | 13.45 | 0.950 | 1999 | list |
1873 Agenor | 10.1 | 50.799 | 53.76 | 54.38 | L5 | 20.60 | – | 1971 | list |
5028 Halaesus | 10.2 | 50.770 | 50.77 | n.a. | L4 | 24.94 | 0.900 | 1988 | list |
2146 Stentor | 9.9 | 50.755 | 58.29 | n.a. | L4 | 16.40 | – | 1976 | list |
4722 Agelaos | 10.0 | 50.378 | 53.16 | 59.47 | L5 | 18.44 | 0.910 | 1977 | list |
5284 Orsilocus | 10.1 | 50.159 | 53.16 | n.a. | L4 | 10.31 | 0.970 | 1989 | list |
11509 Thersilochos | 10.1 | 49.960 | 53.16 | 56.23 | L5 | 17.37 | – | 1990 | list |
5285 Krethon | 10.1 | 49.606 | 58.53 | 52.61 | L4 | 12.04 | 1.090 | 1989 | list |
4791 Iphidamas | 10.1 | 49.528 | 57.85 | 59.96 | L5 | 9.70 | 1.030 | 1988 | list |
9023 Mnesthus | 10.1 | 49.151 | 50.77 | 60.80 | L5 | 30.66 | – | 1988 | list |
5283 Pyrrhus | 9.7 | 48.356 | 64.58 | 69.93 | L4 | 7.32 | 0.950 | 1989 | list |
4946 Askalaphus | 10.2 | 48.209 | 52.71 | 66.10 | L4 | 22.73 | 0.940 | 1988 | list |
(22149) 2000 WD49 | 10.2 | 48.190 | 50.77 | 50.37 | L4 | 7.84 | 1.090 | 2000 | list |
(32496) 2000 WX182 | 10.2 | 48.017 | 50.77 | 51.63 | L5 | 23.34 | 0.950 | 2000 | list |
5120 Bitias | 10.2 | 47.987 | 50.77 | n.a. | L5 | 15.21 | 0.780 | 1988 | list |
12714 Alkimos | 10.1 | 47.819 | 61.04 | 54.62 | L4 | 28.48 | – | 1991 | list |
7352 Hypsenor | 9.9 | 47.731 | 55.67 | 47.07 | L5 | 648 | 0.850 | 1994 | list |
1870 Glaukos | 10.6 | 47.649 | 42.23 | n.a. | L5 | 5.99 | — | 1971 | list |
4138 Kalchas | 10.1 | 46.462 | 53.16 | 61.04 | L4 | 29.2 | 0.810 | 1973 | list |
(23958) 1998 VD30 | 10.2 | 46.001 | 50.77 | 47.91 | L4 | 562 | 0.990 | 1998 | list |
4828 Misenus | 10.4 | 45.954 | 46.30 | 43.22 | L5 | 12.87 | 0.920 | 1988 | list |
4057 Demophon | 10.1 | 45.683 | 53.16 | n.a. | L4 | 29.82 | 1.060 | 1985 | list |
4501 Eurypylos | 10.4 | 45.524 | 46.30 | n.a. | L4 | 6.05 | – | 1989 | list |
4007 Euryalos | 10.3 | 45.515 | 48.48 | 53.89 | L4 | 6.39 | – | 1973 | list |
5259 Epeigeus | 10.3 | 44.741 | 42.59 | 44.42 | L4 | 18.42 | – | 1989 | list |
30705 Idaios | 10.4 | 44.546 | 46.30 | n.a. | L5 | 15.74 | – | 1977 | list |
16560 Daitor | 10.7 | 43.861 | 51.42 | 43.38 | L5 | – | – | 1991 | list |
(15977) 1998 MA11 | 10.4 | 43.530 | 46.30 | 51.53 | L5 | 250 | 0.906 | 1998 | list |
7543 Prylis | 10.6 | 42.893 | 42.23 | n.a. | L4 | 17.80 | – | 1973 | list |
4827 Dares | 10.5 | 42.770 | 44.22 | n.a. | L5 | 19.00 | – | 1988 | list |
1647 Menelaus | 10.5 | 42.716 | 44.22 | n.a. | L4 | 17.74 | 0.866 | 1957 | list |
(A) Used sources: WISE/NEOWISE catalog (NEOWISE_DIAM_V1 PDS, Grav, 2012); IRAS data (SIMPS v.6 catalog); and Akari catalog (Usui, 2011); RP: rotation period and V–I (color index) taken from the LCDB
Note: missing data was completed with figures from the JPL SBDB (query) and from the LCDB (query form) for the WISE/NEOWISE and SIMPS catalogs, respectively. These figures are given in italics. Also, listing is incomplete above #100. |
Naming
This minor planet was named from Greek mythology after the Trojan warrior Prothoon, who was killed by Teucer during the Trojan War.[1] The official naming citation was published by the Minor Planet Center on 6 January 2003 (M.P.C. 47300).[13]
References
- ^ a b c d e f g h "12444 Prothoon (1996 GE19)". Minor Planet Center. Retrieved 8 June 2018.
- ^ a b c d "JPL Small-Body Database Browser: 12444 Prothoon (1996 GE19)" (2018-05-24 last obs.). Jet Propulsion Laboratory. Retrieved 8 June 2018.
- ^ a b c d e f g h i "LCDB Data for (12444) Prothoon". Asteroid Lightcurve Database (LCDB). Retrieved 8 June 2018.
- ^ "List of Jupiter Trojans". Minor Planet Center. 30 May 2018. Retrieved 6 June 2018.
- ^ a b c "Asteroid (12444) Prothoon – Proper elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 8 June 2018.
- ^ a b c d Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved 8 June 2018. (online catalog)
- ^ a b c Grav, T.; Mainzer, A. K.; Bauer, J. M.; Masiero, J. R.; Nugent, C. R. (November 2012). "WISE/NEOWISE Observations of the Jovian Trojan Population: Taxonomy". The Astrophysical Journal. 759 (1): 10. arXiv:1209.1549. Bibcode:2012ApJ...759...49G. doi:10.1088/0004-637X/759/1/49. Retrieved 8 June 2018.
- ^ a b c d Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results" (PDF). The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 8 June 2018. (catalog)
- ^ a b c d Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. Bibcode:2004PDSS...12.....T. Retrieved 8 June 2018.
- ^ a b French, Linda M.; Stephens, Robert D.; Coley, Daniel R.; Megna, Ralph; Wasserman, Lawrence H. (July 2012). "Photometry of 17 Jovian Trojan Asteroids". The Minor Planet Bulletin. 39 (3): 183–187. Bibcode:2012MPBu...39..183F. ISSN 1052-8091. Retrieved 8 June 2018.
- ^ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results" (PDF). Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 8 June 2018.
- ^ "Asteroid 12444 Prothoon". Small Bodies Data Ferret. Retrieved 8 June 2018.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 8 June 2018.
External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Discovery Circumstances: Numbered Minor Planets (10001)-(15000) – Minor Planet Center
- 12444 Prothoon at AstDyS-2, Asteroids—Dynamic Site
- 12444 Prothoon at the JPL Small-Body Database