2010 XC15

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2010 XC15
Discovery
Perihelion
0.42875 AU (64.140 Gm) (q)
0.73497 AU (109.950 Gm) (a)
Eccentricity0.41665 (e)
0.63 yr (230.15 d)
151.705° (M)
1.5638°/day (n)
Inclination8.3848° (i)
94.474° (Ω)
157.66° (ω)
Earth MOID0.002356 AU (352,500 km)
Jupiter MOID3.9932 AU (597.37 Gm)
Physical characteristics
Dimensions~200 metres (660 ft)[3]
21.4[2]

2010 XC15 (also written

Uncertainty Parameter of 1.[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 Earth on 27 December 1976 at a distance of about 0.00625 AU (935,000 km; 581,000 mi).[4][5] In November 2011 with an observation arc of 40 days, the JPL Small-Body Database showed that the uncertainty region of the asteroid during the 1976 close approach could result in a pass anywhere from 0.001 AU to 0.018 AU from Earth.[4] During the 1976 close approach the asteroid reached about apparent magnitude 14.[6]

The asteroid will pass 0.00516 AU (772,000 km; 480,000 mi) from Earth on 27 December 2022,

inside the orbit of the Moon in 1907, but is now known to have passed about 0.01 AU (1,500,000 km; 930,000 mi) from Earth in 1907.[4]

2010 XC15
Position uncertainty and increasing divergence[4]
Date
JPL SBDB
nominal geocentric
distance (AU
) 		uncertainty
region
(
3-sigma
)
1907-12-26 0.011466 AU (1.7153 million km) ±640 thousand km
1914-12-27 0.005121 AU (766.1 thousand km) ±21 thousand km
1976-12-27 0.006253 AU (935.4 thousand km) ±260 km
2022-12-27 0.005160 AU (771.9 thousand km) ±320 km
2064-12-26 0.008920 AU (1.3344 million km) ±80 thousand km
2096-12-27 0.004309 AU (644.6 thousand km) ±660 thousand km

The asteroid

2002 JE9
, with a much larger observation arc, is known to have passed 0.0015 AU (220,000 km; 140,000 mi) from Earth on 11 April 1971.

References

  1. ^
    IAU Minor Planet Center
    . 7 December 2010. Retrieved 30 October 2011. (K10X15C)
  2. ^ a b c d e f "JPL Small-Body Database Browser: (2010 XC15)" (last observation: 2012-11-25; arc: 1.97 years). Jet Propulsion Laboratory. Retrieved 31 March 2016.
  3. ^ a b "Near Earth Asteroids (NEAs)" (Version 20.1). International Astronomical Union. 13 October 2011. Retrieved 30 October 2011.
  4. ^ a b c d e "JPL Close-Approach Data: (2010 XC15)" (last observation: 2012-11-25; arc: 1.97 years). Retrieved 18 September 2013.
  5. ^ a b "NEODyS-2 Close Approaches for 2010XC15". Near Earth Objects – Dynamic Site. Retrieved 30 October 2011.
  6. ^ "2010XC15 Ephemerides for 26 December 1976". NEODyS (Near Earth Objects – Dynamic Site). Retrieved 18 September 2013.

External links

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