Tags: Planet.

2557 Putnam (1981 SL1) is a main-belt asteroid discovered on September 26 1981 by B. A. Skiff and N. G. Thomas http://ssd.jpl.nasa.gov/sbdb.cgi at Flagstaff (AM).

apoapsis (km)
4.06215e+11
orbital period (μ)
1.1367e+08
periapsis (km)
2.96822e+11
absolute magnitude
12.5
discovery date
1981-09-26
epoch
May 14 2008
former name
1981 SL1

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