 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 |
| Designations | |
| Alternative designations | 1967 XV; 1975 VII; 1984 V; 1992 XXI |
| Orbital characteristics | |
| 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 | January 26, 2018 July 30, 2009 |
| Next perihelion | 2034-Jun-14 |
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), and is a Quasi-Hilda comet. It was discovered in late March 1975 by Tamara Mikhajlovna Smirnova while examining exposures from the Crimean Astrophysical Observatory. In the discovery images the comet had an apparent magnitude of ~15. In the year of discovery, the comet came to perihelion on August 6, 1975.
The comet had been photographed during 1967, but was identified as an asteroid and assigned the designation 1967 EU.
The comet is estimated at 4.46 km in diameter, and currently has an orbit contained completely inside of the orbit of Jupiter.
References
- Syuichi Nakano (2007-07-09). "74P/Smirnova-Chernykh (NK 1485)". OAA Computing and Minor Planet Sections. Retrieved 2010-02-24.
- ^ Seiichi Yoshida (2005-08-28). "74P/Smirnova-Chernykh". Seiichi Yoshida's Comet Catalog. Retrieved 2010-01-25.
- MPC
- ^ "JPL Small-Body Database Browser: 74P/Smirnova-Chernykh". Jet Propulsion Laboratory. Retrieved 2010-01-25.
2009-12-30 last obs
- 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.
- ^ 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
| Numbered comets | ||
|---|---|---|
| Previous 73P/Schwassmann–Wachmann |
74P/Smirnova–Chernykh | Next 75D/Kohoutek |
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