Tags: Planet.

31 Euphrosyne is one of the largest main-belt asteroids discovered by James Ferguson on September 1 1854. It was the first asteroid found from North America. It is named after Euphrosyne one of the Charites in Greek mythology.It is a fairly dark body near the belt’s outer edge.

apoapsis (km)
5.77597e+11
average speed (km/s)
59652.0
orbital period (μ)
1.76393e+08
periapsis (km)
3.6472e+11
temperature (K)
159.0
absolute magnitude
6.74
albedo
0.0543
apparent magnitude
10.16
discovery date
1854-09-01
discoverer
James Ferguson (American astronomer)
epoch
December 31 2006 (JD 2454100.5)
former name
A907 GP; A918 GB
rotation period (s)
19915.2

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