(10302) 1989 ML
|Discovered by||E. F. Helin, J. Alu|
|Discovery date||29 June 1989|
|MPO 244277, 1992 WA|
|Epoch 24 October 2005 (JD 2453667.5)|
|Uncertainty parameter 0|
|Observation arc||9733 days (26.65 yr)|
|Aphelion||1.44623 AU (216.353 Gm)|
|Perihelion||1.09872 AU (164.366 Gm)|
|1.27247 AU (190.359 Gm)|
|1.44 yr (524.29 d)|
Average orbital speed
|0° 41m 11.911s / day|
|Earth MOID||0.0827215 AU (12.37496 Gm)|
|Jupiter MOID||3.64463 AU (545.229 Gm)|
|Jupiter Tisserand parameter||5.066|
|19 h (0.79 d)|
(10302) 1989 ML is an as yet unnamed near-Earth asteroid. It is approximately 0.6 km in diameter. An Amor asteroid, it orbits between Earth and Mars. It is an X-type asteroid, so its surface composition is yet unknown. It was discovered by Eleanor F. Helin and Jeff T. Alu at Palomar Observatory on June 29, 1989.
Targeting by spacecraft
The delta-v ('effort') required to reach 1989 ML from a low-Earth orbit is only 4.8 km/s, ranking fifth (as of March 2007) amongst the near-Earth asteroids with well-established orbits. 1989 ML is thus particularly 'easy' (and 'cheap') to reach by spacecraft.
1989 ML was considered as a target of the Japanese spacecraft Hayabusa (then Muses-C) but had to be given up due to technical reasons. It was also considered by the European Space Agency as a candidate target for the Don Quijote mission to study the effects of impacting a spacecraft into an asteroid; however, they too changed to other targets.
- Near-Earth asteroid Delta-v ranking, 1989 ML ranks fourth among the numbered asteroids
- (10302) 1989 ML at the JPL Small-Body Database
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