5642 Bobbywilliams
| Discovery Synodic rotation period | 4.8341±0.0003 h[5] | |
|---|---|---|
| 0.20 (assumed)[4] | ||
| S [4] | ||
| 14.0[1][4] · 14.24±0.23[6] | ||
5642 Bobbywilliams, provisional designation 1990 OK1, is an eccentric, stony
It was discovered on 27 July 1990, by American astronomer Henry E. Holt at Palomar Observatory in California, United States.[3] The asteroid was named for JPL engineer Bobby Williams.[2]
Orbit and classification
Bobbywilliams orbits the Sun in the inner main-belt at a distance of 1.5–3.1 AU once every 3 years and 6 months (1,287 days). Its orbit has an eccentricity of 0.33 and an inclination of 25° with respect to the ecliptic.[1] A first precovery was taken at the Australian Siding Spring Observatory in 1975, extending the body's observation arc by 15 years prior to its official discovery at Palomar.[3]
Physical characteristics
Rotation period
In July 2011, a rotational
Diameter and albedo
The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 4.71 kilometers with an absolute magnitude of 14.0.[4]
Naming
This
References
- ^ a b c d e "JPL Small-Body Database Browser: 5642 Bobbywilliams (1990 OK1)" (2017-03-29 last obs.). Jet Propulsion Laboratory. Retrieved 21 June 2017.
- ^ ISBN 978-3-540-00238-3.
- ^ a b c "5642 Bobbywilliams (1990 OK1)". Minor Planet Center. Retrieved 1 August 2016.
- ^ a b c d e f "LCDB Data for (5642) Bobbywilliams". Asteroid Lightcurve Database (LCDB). Retrieved 1 August 2016.
- ^ ISSN 1052-8091. Retrieved 1 August 2016.
- . Retrieved 1 August 2016.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 1 August 2016.
External links
- 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 (5001)-(10000) – Minor Planet Center
- 5642 Bobbywilliams at AstDyS-2, Asteroids—Dynamic Site
- 5642 Bobbywilliams at the JPL Small-Body Database
