2012 MU2

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 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 1173 days (3.21 yr)
Aphelion 3.1116 AU (465.49 Gm) (Q)
Perihelion 0.99936 AU (149.502 Gm) (q)
2.05547 AU (307.494 Gm) (a)
Eccentricity 0.51380 (e)
2.95 yr (1076.4 d)
73.450° (M)
0° 20m 4.056s /day (n)
Inclination 11.2178° (i)
250.331° (Ω)
16.592° (ω)
Earth MOID 0.0012483 AU (186,740 km)
Jupiter MOID 1.99985 AU (299.173 Gm)
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

    1. 1 2 "MPEC 2012-M24 : 2012 MU2". IAU Minor Planet Center. 2012-06-20. Retrieved 2013-09-08. (K12M02U)
    2. 1 2 3 4 "JPL Small-Body Database Browser: (2012 MU2)" (last observation: 2015-06-14; arc: 1091 days)). Jet Propulsion Laboratory. Retrieved 1 April 2016.
    3. 1 2 3 "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. 1 2 3 4 "JPL Close-Approach Data: (2012 MU2)" (last observation: 2015-06-14; arc: 1091 days). Retrieved 2015-07-03.

    External links

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