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
- ↑ 1.0 1.1 1.2 1.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 3.2 3.3 3.4 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
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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