2012 MU2

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2012 MU2
Discovery[1]
Discovered by Catalina Sky Survey (703)
Discovery date 18 June 2012
Designations
MPC designation 2012 MU2
Apollo NEO,
PHA[2]
Orbital characteristics[2]
Epoch 2014-Dec-09
(Uncertainty=0)[2]
Aphelion 3.1146 AU (Q)
Perihelion 0.99597 AU (q)
2.05708 AU (a)
Eccentricity 0.51407 (e)
2.95 yr (period)
299.75° (M)
Inclination 11.2148° (i)
250.352° (node)
16.553° (peri)
Physical characteristics
Dimensions ~240 meters (790 ft)[3]
Mass 1.8×1010 kg (assumed)
20.8[2]

2012 MU2 (also written 2012 MU2) is an Apollo near-Earth asteroid and potentially hazardous object.[2] It was discovered on 18 June 2012 by the Catalina Sky Survey at an apparent magnitude of 19.9 using a 0.68-meter (27 in) Schmidt–Cassegrain telescope.[1] It has an estimated diameter of 240 meters (790 ft).[3] The asteroid was listed on Sentry Risk Table with a Torino Scale rating of 1 on 23 June 2012.[3]

On 24 June 2012 with an observation arc of 6 days, 2012 MU2 showed a 1 in 7,140 chance of impacting Earth on 1 June 2015. It was removed from the Sentry Risk Table on the next day (25 June).[4]

With an observation arc of 113 days, the JPL Small-Body Database (solution JPL 42 dated 2013-Aug-05) shows that 2012 MU2 may make a very close approach to asteroid 29 Amphitrite on 8 April 2179.[5] The minimum approach distance is about 0.000032 AU (4,800 km; 3,000 mi), but the maximum distance is 0.14 AU (21,000,000 km; 13,000,000 mi).[5] The nominal approach is 0.047 AU (7,000,000 km; 4,400,000 mi).[5]

The Earth approach in 2015 occurred on 15 May 2015 at a distance of 0.11485 AU (17,181,000 km; 10,676,000 mi).[5]

References[edit]

  1. ^ a b "MPEC 2012-M24 : 2012 MU2". IAU Minor Planet Center. 2012-06-20. Retrieved 2013-09-08.  (K12M02U)
  2. ^ a b c d e "JPL Small-Body Database Browser: (2012 MU2)" (last observation: 2015-06-14; arc: 1091 days)). Jet Propulsion Laboratory. Retrieved 2015-07-03. 
  3. ^ a b c "Observations of small Solar-System bodies (2012 MU2)". hohmanntransfer. 2012-06-23. Retrieved 2013-09-08. 
  4. ^ "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. Retrieved 2013-09-08. 
  5. ^ a b c d "JPL Close-Approach Data: (2012 MU2)" (last observation: 2015-06-14; arc: 1091 days). Retrieved 2015-07-03. 

External links[edit]