(10302) 1989 ML

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(10302) 1989 ML
Discovered byE. F. Helin, J. Alu
Discovery date29 June 1989
MPO 244277, 1992 WA
Amor Amor
Orbital characteristics[2]
Epoch 24 October 2005 (JD 2453667.5)
Uncertainty parameter 0
Observation arc9733 days (26.65 yr)
Aphelion1.44623 AU (216.353 Gm)
Perihelion1.09872 AU (164.366 Gm)
1.27247 AU (190.359 Gm)
1.44 yr (524.29 d)
26.28 km/s
0° 41m 11.911s / day
Earth MOID0.0827215 AU (12.37496 Gm)
Physical characteristics
Dimensions0.6 km
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 29 June 1989.

Targeting by spacecraft[edit]

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.[3]

See also[edit]


  1. ^ "(10302) = 1989 ML = 1992 WA". Minor Planet Center. Retrieved 4 June 2015.
  2. ^ "10302 (1989 ML)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 8 April 2016.
  3. ^ "Sancho Study: Designing the Minimum Earth Escape Spacecraft". European Space Agency. 23 May 2012.

External links[edit]