| Discovery | |
|---|---|
| Discovered by | |
| Discovery site | Palomar |
| Discovery date | 1 January 1992 |
| Designations | |
| MPC designation | (8373) Stephengould |
| Named after | Stephen Jay Gould |
| Alternative designations | 1992 AB |
| Minor planet category | |
| Orbital characteristics | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 8844 days (24.21 yr) |
| Aphelion | 5.09996 AU (762.943 Gm) |
| Perihelion | 1.45970 AU (218.368 Gm) |
| Semi-major axis | 3.27983 AU (490.656 Gm) |
| Eccentricity | 0.554947 |
| Orbital period (sidereal) | 5.94 yr (2169.6 d) |
| Mean anomaly | 358.004° |
| Mean motion | 0° 9 57.352 / day |
| Inclination | 40.7923° |
| Longitude of ascending node | 88.8722° |
| Argument of perihelion | 55.5019° |
| Known satellites | 1 |
| Jupiter MOID | 1.4741 AU (220.52 Gm) |
| TJupiter | 2.587 |
| Physical characteristics | |
| Synodic rotation period | 4.435 h (0.1848 d) |
| Absolute magnitude (H) | 14.0 |
8373 Stephengould (1992 AB) is an outer main-belt binary asteroid discovered on 1 January 1992 by Carolyn S. Shoemaker and Eugene Merle Shoemaker at Palomar Observatory. The asteroid was named after the Harvard paleontologist Stephen Jay Gould. The asteroid has a very high inclination, having the second highest inclination of any of the first 10,000 discovered asteroids in the asteroid belt, after 2938 Hopi.
Stephengould is one of few strongly unstable asteroids located near the 2:1 mean motion resonance with the gas giant Jupiter, that corresponds to one of the prominent Kirkwood gaps in the asteroid belt.
The asteroid has a moon orbiting it, discovered in 2010 with an orbital period of 1 day, 10 hours, and 9 minutes.
See also
References
- ^ "Discovery Circumstances: Numbered Minor Planets (5001)–(10000)". IAU: Minor Planet Center. Retrieved 7 December 2008.
- ^ "8373 Stephengould (1992 AB)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 13 April 2016.
- ^ Roig, F.; Nesvorný, D.; Ferraz-Mello, S. (September 2002). "Asteroids in the 2 : 1 resonance with Jupiter: dynamics and size distribution [ Erratum: 2002MNRAS.336.1391R ]". Monthly Notices of the Royal Astronomical Society. 335 (2): 417–431. Bibcode:2002MNRAS.335..417R. doi:10.1046/j.1365-8711.2002.05635.x.
- "(8373) Stephengould". AstDyS. Italy: University of Pisa. Archived from the original on 26 May 2011. Retrieved 10 December 2008.
- ^ Johnston, Robert. "(8373) Stephengould". johnstonsarchive.net. Retrieved 29 May 2015.
External links
- Lightcurve plot of 8373 Stephengould, Palmer Divide Observatory, B. D. Warner (2004)
- Patrick Moore's Data Book of Astronomy, Cambridge University Press (2011)
- Asteroids with Satellites, Robert Johnston, johnstonsarchive.net
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)–(5000) – Minor Planet Center
- 8373 Stephengould at AstDyS-2, Asteroids—Dynamic Site
- 8373 Stephengould at the JPL Small-Body Database
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