2002 MN

2002 MN is the provisional designation given to a 73-meter Apollo near-Earth asteroid that on 14 June 2002 missed collision with the Earth by 0.0008 AU (120,000 km; 74,000 mi),[3] about one third the distance to the Moon (0.3 LD).[5] The close approach was second only to the Earth approach by the 10-meter asteroid 1994 XM1.[5] 2002 MN was discovered on 17 June 2002, three days after closest approach.[1] Its mass and relative velocity were in the same general range as the object ascribed to the Tunguska event of 1908, which leveled over 2,100 km2 (800 sq mi) of trees in Siberia. 2002 MN has an observation arc of 53 days with an uncertainty parameter of 6.[3] There is a cumulative 1 in 360,000 chance that the asteroid could impact Earth sometime after 2070.[4]

History of closest approaches of large near-Earth objects since 1914
(less than H 24 and 1 LD)(A)
NEO Date Approach distance in lunar distances Abs. mag
(H)
Diameter(C)
(m)
Ref(D)
Nominal(B) Minimum Maximum
(152680) 1998 KJ91914-12-310.6060.6040.60819.4279–900data
(458732) 2011 MD51918-09-170.9110.9090.91317.9556–1795data
(163132) 2002 CU111925-08-300.9030.9010.90518.5443–477data
2010 VB11936-01-060.5530.5530.55323.248–156data
2002 JE91971-04-110.6160.5870.65121.2122–393data
2013 UG11976-10-170.8540.8530.85522.373–237data
2012 TY521981-11-040.8180.8130.82321.4111–358data
2012 UE341991-04-080.8470.6761.02723.346–149data
2017 VW132001-11-080.4540.3183.43620.7153–494data
2002 MN2002-06-140.3120.3120.31223.640–130data
(308635) 2005 YU552011-11-080.8450.8450.84521.9320–400data
2011 XC22011-12-030.9040.9010.90723.248–156data
2018 AH2018-01-020.7730.7720.77322.567–216data
2018 GE32018-04-150.5020.5010.50323.735–135data
2010 WC92018-05-150.5280.5280.52823.542–136data
(153814) 2001 WN52028-06-260.6470.6470.64718.2921–943data
99942 Apophis2029-04-130.09810.09630.100019.7310–340data
2012 UE342041-04-080.2830.2740.35423.346–149data
2015 XJ3512047-06-060.7890.25138.13522.470–226data
2007 TV182058-09-220.9180.9170.91923.837–119data
2005 WY552065-05-280.8650.8560.87420.7153–494data
(308635) 2005 YU552075-11-080.5920.4990.75221.9320–400data
(456938) 2007 YV562101-01-020.6210.6150.62821.0133–431data
2007 UW12129-10-190.2390.1550.38122.761–197data
101955 Bennu2135-09-250.7800.3081.40620.19472–512data
(153201) 2000 WO1072140-12-010.6340.6310.63719.3427–593data
2009 DO1112146-03-230.8960.7441.28822.858–188data
(85640) 1998 OX42148-01-220.7710.7700.77121.1127–411data
2007 UY12156-02-130.6850.6526.85622.956–179data
2011 LT172156-12-160.9980.9551.21521.6101–327data
(A) This list includes near-Earth approaches of less than 1 lunar distances (LD) of objects with H brighter than 24.
(B) Nominal geocentric distance from the center of Earth to the center of the object (Earth has a radius of approximately 6,400 km).
(C) Diameter: estimated, theoretical mean-diameter based on H and albedo range between X and Y.
(D) Reference: data source from the JPL SBDB, with AU converted into LD (1 AU≈390 LD)
(E) Color codes:   unobserved at close approach   observed during close approach   upcoming approaches
Note: All close approaches between 1900 and 2200 are listed (with H<24 at less than 1 LD). Objects not observed during the approach,
and simply estimated to have approached on this date, are colored grey. Generically estimated asteroid diameters are given in italics.

2002 MN
Discovery[1][2]
Discovered byMIT Lincoln Laboratory
Discovery date17 June 2002
Designations
Orbital characteristics[3]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 6
Observation arc53 days
Aphelion2.7189 AU (406.74 Gm)
Perihelion0.91052 AU (136.212 Gm)
1.8147 AU (271.48 Gm)
Eccentricity0.49825
2.44 yr (892.90 d)
213.98°
0° 24m 11.448s / day
Inclination1.0490°
85.2787°
131.479°
Earth MOID0.000521686 AU (78,043.1 km)
Jupiter MOID2.25224 AU (336.930 Gm)
Physical characteristics
Dimensions~73 meters (240 ft)[4]
(assumed)[lower-alpha 1]
Mass5.4×108 kg
23.6[3]

    Notes

    1. Diameter estimate based on an assumed albedo of 0.15.

    References

    1. "MPEC 2002-M14 : 2002 MN". IAU Minor Planet Center. 18 June 2002. Retrieved 24 January 2013. (K02M00N)
    2. Asteroid's near-miss with Earth - 21 June 2002 - New Scientist
    3. "JPL Close-Approach Data: (2002 MN)". Archived from the original on 17 February 2013. Retrieved 30 March 2016.
    4. "Earth Impact Risk Summary: 2002 MN". NASA/JPL Near-Earth Object Program Office. Retrieved 22 January 2018.
    5. Don Yeomans (19 June 2002). "Asteroid 2002 MN: Second Closest Asteroid Approach to Earth". NASA's Near Earth Object Program Office.
    Preceded by
    2002 JE9
    Large NEO Earth close approach
    (inside the orbit of the Moon)

    14 June 2002
    Succeeded by
    (308635) 2005 YU55


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