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87 Sylvia
CMSylvia
Adaptive Optics observations of (87) Sylvia, showing its two satellites, Remus and Romulus.
Discovered by Norman Robert Pogson
Date of Discovery May 16, 1866
87 Sylvia is the 8th-largest asteroid in the asteroid belt. It is a member of the Cybele group located beyond the core of the belt (see minor-planet groups). Sylvia is the first asteroid known to possess more than one moon.

Satellite system Edit

Remus Edit

Remus is the inner and smaller moon of the main-belt asteroid 87 Sylvia. It follows an almost-circular close-to-equatorial orbit around the parent asteroid. In this respect it is similar to the other moon Romulus.

Romulus Edit

Romulus is the outer and larger moon of the main-belt asteroid 87 Sylvia, not to be confused with the directly Sun-orbiting asteroid 10386 Romulus. It follows an almost-circular close-to-equatorial orbit around the parent asteroid. In this respect it is similar to the other moon Remus.