| Discovery[1] | |
|---|---|
| Discovered by | Mt. Lemmon Survey |
| Discovery site | Summerhaven, Arizona, USA |
| Discovery date | 5 September 2010 |
| Designations | |
| 2010 RX30 | |
| MPO 279189 | |
| NEO · Aten[2] | |
| Orbital characteristics[2] | |
| Epoch 21 November 2025 (JD 2461000.5) | |
| Uncertainty parameter 1[1] | |
| Observation arc | 1073[1] d |
| Aphelion | 1.15353 AU (172.566 Gm) |
| Perihelion | 0.50816 AU (76.020 Gm) |
| 0.83084 AU (124.292 Gm) | |
| Eccentricity | 0.38839 |
| 0.76 yr (276.616 d) 0.76 yr | |
| 283.70° | |
| 1° 18m 5.184s /day | |
| Inclination | 5.06450° |
| 165.929° | |
| 320.04° | |
| Earth MOID | 0.000872092 AU (130,463.1 km)[2] |
| Mercury MOID | 0.17843 AU (26,693,000 km)[1] |
| Jupiter MOID | 3.91383 AU (585.501 Gm)[2] |
| Physical characteristics | |
| Dimensions | 12 m[3] |
| Mass | 2.5×106 kg[3] |
| 27.1[2] | |
2010 RX30 is a tiny near-Earth asteroid that passed within 248,000 kilometres (154,000 mi) over Earth's surface at 09:51 UTC on 8 September 2010.[4] It is an Aten asteroid estimated to be around 12 metres (39 ft) in diameter with a mass of 2,500 tonnes (5,500,000 lb).[3] It was discovered by the Catalina Sky Survey near Tucson, Arizona, United States alongside 2010 RF12, a small asteroid that also encountered Earth on 8 September. Both asteroids were discovered three days prior to encounter on 5 September, and they were reported to the Minor Planet Center (MPC) that day. Asteroids similar in size to 2010 RX30 and 2010 RF12 are expected to pass within the Moon's orbit every day, though they typically remain undiscovered.[5][6]
See also
References
- ^ a b c d "2010 RX30". Minor Planet Center. Retrieved 16 August 2017.
- ^ a b c d e "(2010 RX30)". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 3545558. Retrieved 16 August 2017.
- ^ a b c 2010 RX30 Impact Risk
- ^ Finch, L. (8 September 2010). "Harvard scientists keep an eye on wayward asteroids". The Boston Globe.
- ^ "Two Asteroids to Pass by Earth Wednesday". Jet Propulsion Laboratory. 7 September 2010. Retrieved 18 December 2025.
- ^ Than, Ker (8 September 2010). "Second Asteroid to Buzz Earth Later Today". National Geographic News. National Geographic Society. Archived from the original on 11 September 2010.
External links
- Grossman, Lisa (8 September 2010). "Close-Shave Asteroid Caught on Camera". WIRED Science.
- 2010 RX30 at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemerides · Observation prediction · Orbital info · MOID · Proper elements · Observational info · Close approaches · Physical info · Orbit animation
- 2010 RX30 at ESA–space situational awareness
- Ephemerides · Observations · Orbit · Physical properties · Summary
- 2010 RX30 at the JPL Small-Body Database
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