(53319) 1999 JM8

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(53319) 1999 JM8
Asteroid 1999 JM8.gif
Arecibo Observatory / NSF / NASA
Discovery
Discovered by LINEAR
Discovery date May 13, 1999
Designations
1990 HD1
Minor planet category Apollo PHA[1]
Mars crosser
Orbital characteristics
Epoch December 1, 2005 (JD 2453705.5)
Aphelion 4.46 AU (667.93 Gm)
Perihelion 0.95 AU (142.03 Gm)
2.71 AU (404.98 Gm)
Eccentricity 0.65
4.45 a (1626.91 d)
16.01 km/s
151.84°
Inclination 13.83°
133.90°
166.25°
Physical characteristics
Dimensions 7 km[1]
136 h[1]
Spectral type
X[1]
15.2[1]

(53319) 1999 JM8 (also written (53319) 1999 JM8) is a near-Earth asteroid and Mars-crosser asteroid discovered by LINEAR. Radar imaging by Goldstone and Arecibo has revealed the asteroid to have an effective diameter of 7 km.[1] Like the asteroid 4179 Toutatis, its rotation speed is unusually slow and possibly chaotic.

It passed closer than 0.20 AU to the Earth five times in the last century (0.033 AU in 1990), but its closest approach in the 21st century will be in 2075 at 0.256 AU.[1]

References[edit]

  1. ^ a b c d e f g "JPL Small-Body Database Browser: 53319 (1999 JM8)". Jet Propulsion Laboratory. Retrieved 2014-02-25. 
Radar images and computer models of 1999 JM₈