10502 Armaghobs
| Discovery [1] | |
|---|---|
| Discovered by | E. F. Helin |
| Discovery site | Palomar Obs. |
| Discovery date | 22 August 1987 |
| Designations | |
| MPC designation | 10502 Armaghobs |
Named after |
Armagh Observatory (astronomical observatory)[2] |
|
1987 QF6 · 1980 PJ2 1994 RJ29 | |
| Mars-crosser [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 35.33 yr (12,906 days) |
| Aphelion | 3.0424 AU |
| Perihelion | 1.5759 AU |
| 2.3092 AU | |
| Eccentricity | 0.3175 |
| 3.51 yr (1,282 days) | |
| 281.27° | |
| Inclination | 21.936° |
| 170.25° | |
| 263.19° | |
| Earth MOID | 0.7434 AU |
| Physical characteristics | |
| Dimensions | 2.97 km (calculated)[3] |
| 24.978±0.002 h[4] | |
| 0.20 (assumed)[3] | |
| S [3] | |
| 15.0[1] | |
|
| |
10502 Armaghobs, provisional designation 1987 QF6, is an eccentric asteroid from the inner regions of the asteroid belt, classified as Mars-crossing asteroid, about 3 kilometers in diameter. It was discovered by American female astronomer Eleanor Helin at the U.S. Palomar Observatory in California, on 22 August 1987.[5]
The S-type asteroid orbits the Sun at a distance of 1.6–3.0 AU once every 3 years and 6 months (1,282 days). Its orbit is tilted by 22 degrees to the plane of the ecliptic and shows a notable eccentricity of 0.32.[1] In 2013, a photometric light-curve analysis at the Riverland Dingo Observatory at Moorook, South Australia, has given rotation period of 24.978±0.002 hours with a brightness amplitude of 0.51 in magnitude,[4] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.20 for the asteroid's surface, a typical value for bodies with a stony composition.[3]
The minor planet was named after the Armagh Observatory in Northern Ireland. The modern astronomical research institute was founded by Archbishop Richard Robinson in 1790. It is has a rich heritage, that includes T. R. Robinson's cup-anemometer, Dreyer's NGC Catalogue, Lindsay's Armagh-Dunsink-Harvard telescope and the work of the Estonian astronomer E. J. Öpik, after whom the minor planet 2099 Öpik was named.[2]
References
- 1 2 3 4 "JPL Small-Body Database Browser: 10502 Armaghobs (1987 QF6)" (2015-12-11 last obs.). Jet Propulsion Laboratory. Retrieved January 2016.
- 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (10502) Armaghobs. Springer Berlin Heidelberg. p. 736. ISBN 978-3-540-00238-3. Retrieved January 2016.
- 1 2 3 4 5 "LCDB Data for (10502) Armaghobs". Asteroid Lightcurve Database (LCDB). Retrieved January 2016.
- 1 2 Hills, Kevin (January 2014). "Asteroid Lightcurve Analysis at Riverland Dingo Observatory (RDO): 2013 Results". Bulletin of the Minor Planets (Section of the Association of Lunar and Planetary Observers) 41 (1): 2–3. Bibcode:2014MPBu...41....2H. ISSN 1052-8091. Retrieved January 2016.
- ↑ "10502 Armaghobs (1987 QF6)". Minor Planet Center. Retrieved January 2016.
External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (10001)-(15000) – Minor Planet Center
- 10502 Armaghobs at the JPL Small-Body Database
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