astro.wikisort.org - Asteroid
2010 XG11 is an Amor near-Earth asteroid.[2] It was discovered on 5 December 2010 by the Catalina Sky Survey at an apparent magnitude of 19.7 using a 0.68-meter (27 in) Schmidt–Cassegrain telescope.[1] Three precovery images are known from 1 July 1995.[4] With an observation arc of 16 years, the orbit is well determined with an orbital uncertainty of 0.[2] With an absolute magnitude of 20.0,[2] the asteroid is about 270–590 meters in diameter.[3]
| Discovery[1] | |
|---|---|
| Discovered by | Catalina Sky Survey (703) |
| Discovery date | 5 December 2010 |
| Designations | |
MPC designation | 2010 XG11 |
Minor planet category | Amor NEO[2] |
| Orbital characteristics[2] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 6191 days (16.95 yr) |
| Aphelion | 2.1736 AU (325.17 Gm) (Q) |
| Perihelion | 1.1349 AU (169.78 Gm) (q) |
Semi-major axis | 1.6543 AU (247.48 Gm) (a) |
| Eccentricity | 0.31395 (e) |
Orbital period (sidereal) | 2.13 yr (777.15 d) |
Mean anomaly | 192.11° (M) |
Mean motion | 0° 27m 47.628s /day (n) |
| Inclination | 25.129° (i) |
Longitude of ascending node | 256.05° (Ω) |
Argument of perihelion | 87.799° (ω) |
| Earth MOID | 0.353357 AU (52.8615 Gm) |
| Jupiter MOID | 3.44289 AU (515.049 Gm) |
| Physical characteristics | |
| Dimensions | ~270 – 590 meters[3] |
Apparent magnitude | 19.3 – 24.9 |
Absolute magnitude (H) | 20.0[2] |
With a Mars-minimum orbit intersection distance of 0.002 AU (300,000 km; 190,000 mi), the asteroid currently makes closer approaches to Mars than it does Earth.[4] On 29 July 2014 the asteroid passed 0.00805 AU (1,204,000 km; 748,000 mi) from Mars.[5][6]
References
- "MPEC 2010-X62 : 2010 XG11". IAU Minor Planet Center. 6 December 2010. Retrieved 29 June 2014. (K10X11G)
- "JPL Small-Body Database Browser: (2010 XG11)" (last observation: 2012-06-12; arc: 16.9 yr). Jet Propulsion Laboratory. Retrieved 31 March 2016.
- "Absolute Magnitude (H)". NASA/JPL. Archived from the original on 2 March 2001. Retrieved 29 June 2014.
- "2010 XG11 Orbit". IAU Minor Planet Center. Retrieved 29 June 2014.
- "JPL Close-Approach Data: (2010 XG11)" (last observation: 2012-06-12; arc: 16.9 yr). Retrieved 29 June 2014.
- "2010XG11 Close Approaches". NEODyS (Near Earth Objects – Dynamic Site). Retrieved 29 June 2014.
External links
- 2010 XG11 at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- 2010 XG11 at ESA–space situational awareness
- 2010 XG11 at the JPL Small-Body Database
Discoveries by the Catalina Sky Survey
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