2000 Herschel
| Discovery [1] | |
|---|---|
| Discovered by | J. Schubart |
| Discovery site | Sonneberg Obs. |
| Discovery date | 29 July 1960 |
| Designations | |
| MPC designation | 2000 Herschel |
Named after | William Herschel[2] |
| 1960 OA · 1934 NX | |
| main-belt | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 81.17 yr (29,649 days) |
| Aphelion | 3.0881 AU |
| Perihelion | 1.6736 AU |
| 2.3809 AU | |
| Eccentricity | 0.2970 |
| 3.67 yr (1341.8 days) | |
Average orbital speed | 18.87 km/s |
| 278.30° | |
| Inclination | 22.795° |
| 292.06° | |
| 130.18° | |
| Earth MOID | 0.7562 AU |
| Physical characteristics | |
| Dimensions | 17 km[3][4] |
| 130 h | |
| 0.2[3][4] | |
| Temperature | ~ 180 K |
|
B–V = 0.893 U–B = 0.494 Tholen = S | |
| 11.25 | |
|
| |
2000 Herschel, provisional designation 1960 OA, is a stony asteroid from the asteroid belt, about 17 kilometers in diameter. It was discovered by astronomer Joachim Schubart at Sonneberg Observatory, Germany on 29 July 1960.[5] The eccentric orbit of the slowly rotating S-type asteroid with an albedo of 0.2 is inclined by 23 degrees to the ecliptic.
Analysis of the light curve for this object appears to show that it is tumbling, with rotation occurring about the non-principal axis. The rotation period is estimated as 130±3 hours, during which time the magnitude of the object varies by 1.16±0.05 in magnitude.[6] The relatively high orbital eccentricity of this object causes it to come close to the orbit of the planet Mars. This means there is a chance it will eventually collide with the planet, with the odds of a collision estimated at 18% per billion orbits.[7]
It is named in honour of the English astronomer of German origin William Herschel who discovered Uranus. While the minor planet with number "1000", 1000 Piazzia, honours the discoverer of the first minor planet, Giuseppe Piazzi, number "2000" does so for Herschel, discoverer of the first telescopic major planet.[2]
References
- 1 2 "JPL Small-Body Database Browser: 2000 Herschel (1960 OA)" (2015-09-14 last obs.). Jet Propulsion Laboratory. Retrieved October 2015.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (2000) Herschel. Springer Berlin Heidelberg. p. 162. ISBN 978-3-540-29925-7. Retrieved October 2015.
- 1 2 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved October 2015.
- 1 2 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved October 2015.
- ↑ "2000 Herschel (2008)", The Minor Planet Observer and Palmer Divide Observatory, retrieved 2012-08-21
- ↑ Warner, Brian D. (April 2011). "Upon Further Review: VI. An Examination of Previous Lightcurve Analysis from the Palmer Divide Observatory". Bulletin of the Minor Planets (Section of the Association of Lunar and Planetary Observers) 38 (2): 96–101. Bibcode:2011MPBu...38...96W. ISSN 1052-8091. Retrieved October 2015.
- ↑ Steel, D. I. (August 1985), "Collisions in the solar systems. II - Asteroid impacts upon Mars", Monthly Notices of the Royal Astronomical Society 215: 369–381, Bibcode:1985MNRAS.215..369S, doi:10.1093/mnras/215.3.369.
External links
- Dictionary of Minor Planet Names, Google books
- 2000 Herschel at the JPL Small-Body Database
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