C/1913 Y1 (Delavan)
 Comet Delavan photographed by Gavril A. Tikhov from the Pulkovo Observatory in October 1914 | |
| Discovery | |
|---|---|
| Discovered by | Pablo T. Delavan |
| Discovery site | La Plata Observatory |
| Discovery date | 18 December 1913 |
| Designations | |
| 1913f[1] 1914 V | |
| Orbital characteristics[3] | |
| Epoch | 15 March 1914 (JD 2420206.5) |
| Observation arc | 628 days (1.72 years)[2] |
| Number of observations | 1006 |
| Perihelion | 1.1044 AU |
| Eccentricity | 1.00014 |
| Inclination | 68.043° |
| 60.397° | |
| Argument of periapsis | 287.436° |
| Last perihelion | 26 October 1914 |
| Earth MOID | 0.63832 AU |
| Jupiter MOID | 1.64685 AU |
| Comet total magnitude (M1) | 4.8 |
Comet Delavan, formally designated as C/1913 Y1, is a hyperbolic comet discovered by astronomer Pablo T. Delavan on December 18, 1913, from the La Plata Observatory in Argentina.[2]
The comet was last seen on September 19, 1915.[4] It is one of 19 comets used in the original sample by Jan Oort for his hypothesis regarding the origin of long-period comets in 1950.[5]
References
[edit]- ^ "Comet Names and Designations". International Comet Quarterly. Retrieved 4 November 2024.
- ^ a b "C/1913 Y1 | CODEC". Catalogue of Cometary Orbits and their Dynamical Evolution. Retrieved 4 November 2024.
- ^ "C/1913 Y1 – JPL Small-Body Database Browser". ssd.jpl.nasa.gov. Jet Propulsion Laboratory. Retrieved 4 November 2024.
- ^ G. W. Kronk (2007). Cometography - A Catalog of Comets (PDF). Vol. 3: 1900-1932. Cambridge University Press. Bibcode:2008JAHH...11...83O. ISBN 978-0-521-58506-4. ISSN 1440-2807.
- ^ M. Królikowska; P. A. Dybczyński (2010). "Where do Long-Period Comets come from? 26 Comets from the non-gravitational Oort spike" (PDF). Monthly Notices of the Royal Astronomical Society. 404 (4): 1886–1902. doi:10.1111/j.1365-2966.2010.16403.x.
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