74P/Smirnova–Chernykh
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 74P (apmag ~17; 3.6AU from the Sun) near galaxy PGC 49413 | |
| Discovery | |
|---|---|
| Discovered by |
Tamara Mikhailovna Smirnova Nikolai Stepanovich Chernykh |
| Discovery date | March 4, 1975 |
| Alternative designations |
1967 XV; 1975 VII; 1984 V; 1992 XXI |
| Orbital characteristics A | |
| Epoch | May 1, 2009 |
| Aphelion | 4.790 AU |
| Perihelion | 3.557 AU |
| Semi-major axis | 4.173 AU |
| Eccentricity | 0.1485 |
| Orbital period | 8.53 yr |
| Inclination | 6.647° |
| Last perihelion | July 30, 2009[1] |
| Next perihelion | January 26, 2018[2] |
74P/Smirnova–Chernykh is a periodic comet in the Solar System. It fits the definition of an Encke-type comet with (TJupiter > 3; a < aJupiter),[3] and is a Quasi-Hilda comet.[4] It was discovered in late March 1975 by Tamara Mikhajlovna Smirnova while examining exposures from the Crimean Astrophysical Observatory.[5] In the discovery images the comet had an apparent magnitude of ~15.[5] In the year of discovery, the comet came to perihelion on August 6, 1975.[5]
The comet had been photographed during 1967, but was identified as an asteroid and assigned the designation 1967 EU.[1]
The comet is estimated at about 4.46 km in diameter, and currently has an orbit contained completely inside of the orbit of Jupiter.[3]
References
- ↑ 1.0 1.1 Seiichi Yoshida (2005-08-28). "74P/Smirnova-Chernykh". Seiichi Yoshida's Comet Catalog. Retrieved 2010-01-25.
- ↑ Syuichi Nakano (2007-07-09). "74P/Smirnova-Chernykh (NK 1485)". OAA Computing and Minor Planet Sections. Retrieved 2010-02-24.
- ↑ 3.0 3.1 "JPL Small-Body Database Browser: 74P/Smirnova-Chernykh". Jet Propulsion Laboratory. 2009-12-30 last obs. Retrieved 2010-01-25.
- ↑ Toth, I. (March 2006). "The quasi-Hilda subgroup of ecliptic comets - an update". Astronomy and Astrophysics 448 (3): 1191–1196. Bibcode:2006A&A...448.1191T. doi:10.1051/0004-6361:20053492.
- ↑ 5.0 5.1 5.2 Kronk, Gary W. "74P/Smirnova-Chernykh". Retrieved 2010-01-25. (Cometography Home Page)
External links
- Orbital simulation from JPL (Java) / Horizons Ephemeris
- 74P at Kazuo Kinoshita's Comets
- Images of 74P/Smirnova–Chernykh from the 2009 passage
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| Periodic comets (by number) | ||
|---|---|---|
| Previous 73P/Schwassmann-Wachmann |
74P/Smirnova–Chernykh | Next 75D/Kohoutek |
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