122P/de Vico
122P/de Vico (provisional designation: 1846 D1) is a periodic comet with an orbital period of 74 years. It fits the classical definition of a Halley-type comet with (20 years < period < 200 years).[5] It was discovered by Francesco de Vico in Rome on February 20, 1846.
| Discovery | |
|---|---|
| Discovered by | Francesco de Vico |
| Discovery date | 20 February 1846 |
| Alternative designations | 1846 IV, P/1846 D1, P/1995 S1 |
| Orbital characteristics A | |
| Aphelion | 34.70 AU |
| Perihelion | 0.659337 AU |
| Semi-major axis | 17.6808 AU |
| Eccentricity | 0.962709 |
| Orbital period | 74.35 yr |
| Inclination | 85.3828° |
| Last perihelion | October 6, 1995 |
| Next perihelion | 14 October 2069[1][2][3] 21 October 2069[4] |
On 3 December 2153 the comet will pass about 0.694 AU (103,800,000 km; 64,500,000 mi) from Uranus.[6]
Daniel Kirkwood in 1884 noticed that the comet shares elements with comet 12P/Pons-Brooks. He suggested that 122P had calved off Pons-Brooks some centuries prior. Later he identified the two comets' capture into their elliptical orbits (or their parent body's capture) with their shared aphelion close to Neptune 991 CE.[7]
References
- Syuichi Nakano (19 November 1999). "122P/de Vico (NK 724)". OAA Computing and Minor Planet Sections. Retrieved 2 February 2012.
- Horizons output. "Observer Table for Comet 122P/de Vico (1996)". Retrieved 13 June 2011. (Observer Location:@sun)
- "122P/de Vico Orbit". Minor Planet Center. Retrieved 17 June 2014.
- Seiichi Yoshida (9 November 2005). "122P/de Vico". Seiichi Yoshida's Comet Catalog. Retrieved 20 February 2012.
- "JPL Small-Body Database Browser: 122P/de Vico". Jet Propulsion Laboratory. 25 June 1996. Retrieved 26 July 2012.
- "JPL Close-Approach Data: 122P/de Vico". 25 June 1996. Retrieved 24 February 2012.
- Daniel Kirkwood (1886). "The Comets 1812 I, and 1846 IV". The Sidereal Messenger. 5: 13–14. Bibcode:1886SidM....5...13K.
External links
- Orbital simulation from JPL (Java) / Horizons Ephemeris
- 122P/de Vico – Kazuo Kinoshita (1998 Jan. 27)
| Numbered comets | ||
|---|---|---|
| Previous 121P/Shoemaker–Holt |
122P/de Vico | Next 123P/West–Hartley |
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