About: Delta2 Telescopii

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Delta2 Telescopii is a blue-white-hued binary star system in the southern constellation of Telescopium. It is faintly visible to the naked eye, having an apparent visual magnitude of 5.05. The distance to this system, as determined with an annual parallax shift of 2.73 mas, is roughly 1,200 light-years. At that distance, the visual magnitude of the star is diminished by an extinction of 0.36 due to interstellar dust. The pair have an orbital period of 21.7 days and an eccentricity of 0.22. For the merged stellar classification, Houk (1978) gives B3 IV/V, while Levato (1975) lists a more evolved class of B3 III. It appears to be a relatively young system, barely 40 million years old.

Attributes	Values
rdf:type	Thing place dbo:Location schema:Place celestial body star
rdfs:label	Delta2 Telescopii (en) Delta2 Telescopii (pt) Delta2 Telescopii (sv)
rdfs:comment	Delta2 Telescopii is a blue-white-hued binary star system in the southern constellation of Telescopium. It is faintly visible to the naked eye, having an apparent visual magnitude of 5.05. The distance to this system, as determined with an annual parallax shift of 2.73 mas, is roughly 1,200 light-years. At that distance, the visual magnitude of the star is diminished by an extinction of 0.36 due to interstellar dust. The pair have an orbital period of 21.7 days and an eccentricity of 0.22. For the merged stellar classification, Houk (1978) gives B3 IV/V, while Levato (1975) lists a more evolved class of B3 III. It appears to be a relatively young system, barely 40 million years old. (en) Delta2 Telescopii (17 Telescopii) é uma estrela na direção da constelação de Telescopium. Possui uma ascensão reta de 18h 32m 01.94s e uma declinação de −45° 45′ 26.5″. Sua magnitude aparente é igual a 5.07. Considerando sua distância de 1116 anos-luz em relação à Terra, sua magnitude absoluta é igual a −2.60. Pertence à classe espectral B3III. (pt) Delta2 Telescopii (δ2 Telescopii, förkortat Delta2 Tel, δ2 Tel) som är stjärnans Bayerbeteckning, är en dubbelstjärna belägen i den nordvästra delen av stjärnbilden Kikaren. Den har en skenbar magnitud på 5,05 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 2,7 mas, beräknas den befinna sig på ett avstånd på ca 1 200 ljusår (ca 370 parsek) från solen. På det beräknade avståndet minskar stjärnans skenbara magnitud med 0,36 enheter på grund av skymning genom interstellärt stoft. (sv)
foaf:name	Delta2 Telescopii (en)
dct:subject	B-type giants B-type subgiants Bayer objects Bright Star Catalogue objects Durchmusterung objects Henry Draper Catalogue objects Hipparcos objects Spectroscopic binaries Telescopium (constellation)
Wikipage page ID	24725274 (xsd:integer)
Wikipage revision ID	1079519819 (xsd:integer)
Link from a Wikipage to another Wikipage	Binary star Julian day Stellar classification B-type giants B-type subgiants Bayer objects Bright Star Catalogue objects Durchmusterung objects Henry Draper Catalogue objects Hipparcos objects Spectroscopic binaries Constellation Light-year Stellar evolution Orbital period Stellar parallax Telescopium (constellation) International Celestial Reference System J2000.0 Telescopium Apparent visual magnitude Orbital eccentricity Southern celestial hemisphere Extinction (astronomy) Interstellar dust Milliarcsecond
sameAs	Delta2 Telescopii Delta2 Telescopii Delta2 Telescopii Delta2 Telescopii Delta2 Telescopii
dbp:wikiPageUsesTemplate	dbt:! dbt:Other_stars_by_Bayer_designation dbt:Reflist dbt:Short_description dbt:Starbox_astrometry dbt:Starbox_begin dbt:Starbox_catalog dbt:Starbox_character dbt:Starbox_detail dbt:Starbox_end dbt:Starbox_observe dbt:Starbox_orbit dbt:Starbox_reference dbt:Val dbt:DEC dbt:Odlist dbt:RA dbt:Stars_of_Telescopium
absmag v	−1.46 (en)
appmag v	5.050000 (xsd:double)
b-v	−0.12 (en)
class	B3 IV/V or B3 III (en)
constell	Telescopium
eccentricity	0.220000 (xsd:double)
epoch	J2000.0
equinox	J2000.0 (en)
k	34.900000 (xsd:double)
luminosity bolometric	5129 (xsd:integer)
p error	0.260000 (xsd:double)
parallax	2.730000 (xsd:double)
periarg	12.700000 (xsd:double)
periastron	2435216.669000 (xsd:double)
period unitless	1875363.84 (second)
prop mo dec	−10.23 (en)
prop mo ra	+0.16 (en)
rotational velocity	0 (xsd:integer)
temperature	17100 (xsd:integer)
u-b	−0.52 (en)
has abstract	Delta2 Telescopii is a blue-white-hued binary star system in the southern constellation of Telescopium. It is faintly visible to the naked eye, having an apparent visual magnitude of 5.05. The distance to this system, as determined with an annual parallax shift of 2.73 mas, is roughly 1,200 light-years. At that distance, the visual magnitude of the star is diminished by an extinction of 0.36 due to interstellar dust. The pair have an orbital period of 21.7 days and an eccentricity of 0.22. For the merged stellar classification, Houk (1978) gives B3 IV/V, while Levato (1975) lists a more evolved class of B3 III. It appears to be a relatively young system, barely 40 million years old. (en) Delta2 Telescopii (17 Telescopii) é uma estrela na direção da constelação de Telescopium. Possui uma ascensão reta de 18h 32m 01.94s e uma declinação de −45° 45′ 26.5″. Sua magnitude aparente é igual a 5.07. Considerando sua distância de 1116 anos-luz em relação à Terra, sua magnitude absoluta é igual a −2.60. Pertence à classe espectral B3III. (pt) Delta2 Telescopii (δ2 Telescopii, förkortat Delta2 Tel, δ2 Tel) som är stjärnans Bayerbeteckning, är en dubbelstjärna belägen i den nordvästra delen av stjärnbilden Kikaren. Den har en skenbar magnitud på 5,05 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 2,7 mas, beräknas den befinna sig på ett avstånd på ca 1 200 ljusår (ca 370 parsek) från solen. På det beräknade avståndet minskar stjärnans skenbara magnitud med 0,36 enheter på grund av skymning genom interstellärt stoft. (sv)
prov:wasDerivedFrom	wikipedia-en:Delta2_Telescopii?oldid=1079519819&ns=0
page length (characters) of wiki page	6825 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Delta2_Telescopii
is Link from a Wikipage to another Wikipage of	Delta Telescopii

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