21777 1999 RS221

Main-belt minor planet

Designation: (21777) 1999 RS221
Class: Main-belt
Semi-major axis: 2.9747396 AU
Eccentricity: 0.0250375
Inclination: 8.38833°
Absolute magnitude (H): 14
Perihelion: 2.900 AU
Aphelion: 3.049 AU