(15430) 1998 UR31 is a main-belt binary asteroid. It was discovered through the Beijing Schmidt CCD Asteroid Program at the Xinglong Station in the Chinese province of Hebei on October 22, 1998.[1] A moon was discovered orbiting the asteroid in 2010. The moon has an orbital period of almost exactly a day, and is tidally locked with the asteroid.[2]
| Discovery[1] | |
|---|---|
| Discovered by | SCAP |
| Discovery site | Beijing Xinglong Obs. |
| Discovery date | 22 October 1998 |
| Designations | |
| (15430) 1998 UR31 | |
| 1998 UR31; 1980 EK1 2000 AB153 | |
| main-belt | |
| Orbital characteristics[1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 22044 days (60.35 yr) |
| Aphelion | 2.6001 AU (388.97 Gm) |
| Perihelion | 1.8433 AU (275.75 Gm) |
| 2.2217 AU (332.36 Gm) | |
| Eccentricity | 0.17032 |
| 3.31 yr (1209.6 d) | |
| 245.22° | |
| 0° 17m 51.468s / day | |
| Inclination | 8.1801° |
| 62.806° | |
| 177.42° | |
| Earth MOID | 0.829914 AU (124.1534 Gm) |
| Physical characteristics | |
| 2.52735 h (0.105306 d) | |
| 14.2 | |
See also
editReferences
edit- ^ a b c "JPL Small-Body Database Browser: 15430 (1998 UR31)" (2015-01-28 last obs.). Jet Propulsion Laboratory. Retrieved 5 April 2016.
- ^ Johnston, Robert. "(15430) 1998 UR31". johnstonsarchive.net. Retrieved 29 May 2015.
External links
edit- Asteroids with Satellites, Robert Johnston, johnstonsarchive.net
- (15430) 1998 UR31 at the JPL Small-Body Database
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