137229 1999 RD21

Main-belt minor planet

Designation: (137229) 1999 RD21
Class: Main-belt
Semi-major axis: 2.2883289 AU
Eccentricity: 0.2123607
Inclination: 5.49915°
Absolute magnitude (H): 16.63
Perihelion: 1.802 AU
Aphelion: 2.774 AU