Tags: Planet.

15904 Halstead (1997 SD11) is a main-belt asteroid discovered on September 29 1997 by T. Stafford at the Zeno Observatory.

apoapsis (km)
3.32025e+11
orbital period (μ)
1.00399e+08
periapsis (km)
3.15169e+11
absolute magnitude
14.4
discovery date
1997-09-29
discoverer
Tom Stafford (astronomer)
epoch
May 14 2008
former name
1997 SD11

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