12129 1999 RB138

Main-belt minor planet

Designation: (12129) 1999 RB138
Class: Main-belt
Semi-major axis: 3.1805155 AU
Eccentricity: 0.168234
Inclination: 1.26826°
Absolute magnitude (H): 12.99
Perihelion: 2.645 AU
Aphelion: 3.716 AU