2010 XC15
| Discovery[1] | |
|---|---|
| Discovered by | Catalina Sky Survey (703) 0.68-m Schmidt |
| Discovery date | 2010 12 05 |
| Designations | |
| MPC designation | 2010 XC15 |
| Minor planet category | Aten NEO, PHA[2] |
| Orbital characteristics[2] | |
| Epoch 2011-Aug-27 (Uncertainty=6)[2] |
|
| Aphelion | 1.04 AU (Q) |
| Perihelion | 0.428 AU (q) |
| Semi-major axis | 0.734 AU (a) |
| Eccentricity | 0.416 |
| Orbital period | 0.63 yr |
| Mean anomaly | 233° (M) |
| Inclination | 8.38° |
| Longitude of ascending node | 94.5° |
| Argument of perihelion | 157° |
| Physical characteristics | |
| Dimensions | ~200 metres (660 ft)[3] |
| Absolute magnitude (H) | 21.4[2] |
2010 XC15 (also written 2010 XC15) is a near-Earth asteroid and potentially hazardous object.[2] It has a modest observation arc of 40 days and an Uncertainty Parameter of 6.[2] It was discovered on 5 December 2010 by the Catalina Sky Survey at an apparent magnitude of 17.5 using a 0.68-metre (27 in) Schmidt.[1]
Based on an absolute magnitude of 21.4,[2] the asteroid has an estimated diameter of about 200 metres (660 ft).[3] 2010 XC15 is noted for a close approach to the Earth around 26-27 December 1976 at a nominal distance of about 0.002 AU (300,000 km; 190,000 mi).[4][5] As of November 2011[update], JPL shows that the uncertainty region of the asteroid during the 1976 could pass anywhere from 0.001 AU to 0.018 AU from the Earth.[4] It is one of the largest objects calculated to have come inside the orbit of the moon. During the 1976 close approach the asteroid probably reached about apparent magnitude 11.[6]
The asteroid will pass 0.009 AU (1,300,000 km; 840,000 mi) from the Earth on 28 December 2022,[4][5] allowing a refinement to the known trajectory and the 1976 close approach.
The asteroid 2002 JE9, with a much larger observation arc, is known to have passed 0.001 AU (150,000 km; 93,000 mi) from the Earth on 11 April 1971.
References [edit]
- ^ a b "MPEC 2010-X66 : 2010 XC15". IAU Minor Planet Center. 2010-12-07. Retrieved 2011-10-30. (K10X15C)
- ^ a b c d e f g "JPL Small-Body Database Browser: (2010 XC15)". Jet Propulsion Laboratory. 2011-01-14 last obs (arc=40 days). Retrieved 2011-10-30.
- ^ a b "Near Earth Asteroids (NEAs)". International Astronomical Union. 13 October 2011 – Version 20.1. Retrieved 2011-10-30.
- ^ a b c "JPL Close-Approach Data: (2010 XC15)". 2011-01-14 last obs (arc=40 days). Retrieved 2011-10-30.
- ^ a b "NEODyS-2 Close Approaches for 2010XC15". Near Earth Objects - Dynamic Site. Retrieved 2011-10-30.
- ^ "2010XC15 Ephemerides for 26 December 1976". NEODyS (Near Earth Objects - Dynamic Site). Retrieved 2011-10-30.
External links [edit]
- Orbital simulation from JPL (Java) / Ephemeris
| Preceded by 2002 JE9 |
Large NEO Earth close approach (inside the orbit of the moon) 26-27 December 1976 |
Succeeded by 2005 YU55 |
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