2009 RR
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Discoverydate11 September 2009
Designation
2009 RR| Discovery[1] | |
|---|---|
| Discovered by | Catalina Sky Survey (703) |
| Discovery date | 11 September 2009 |
| Designations | |
Designation | 2009 RR |
| Orbital characteristics[2] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 7 | |
| Observation arc | 4 days (last seen 2009) |
| Aphelion | 2.0753 AU (310.46 Gm) |
| Perihelion | 0.75416 AU (112.821 Gm) |
| 1.4147 AU (211.64 Gm) | |
| Eccentricity | 0.46693 |
| 1.68 yr (614.63 d) | |
| 252.65° | |
| 0° 35m 8.592s /day (n) | |
| Inclination | 6.1464° |
| 174.21° | |
| 256.21° | |
| Earth MOID | 0.0028846 AU (431,530 km) |
| Physical characteristics | |
| Dimensions |
|
| Mass | 2.4×107 kg (assumed) |
| 25.5[2] | |
2009 RR is a micro-asteroid, classified as a near-Earth object of the Apollo group.[2] It was discovered on 11 September 2009 by the Catalina Sky Survey at an apparent magnitude of 19.5 using a 0.68-meter (27 in) Schmidt–Cassegrain telescope.[1] 2009 RR was the only asteroid discovered before 2014 that was predicted to potentially pass inside the orbit of the Moon during 2014. The asteroid has an estimated diameter of 26 meters (85 ft) and is listed on the Sentry Risk Table.[3] It is not large enough to qualify as a potentially hazardous object.
