239842 1999 SM21

Main-belt minor planet

Designation: (239842) 1999 SM21
Class: Main-belt
Semi-major axis: 2.5854977 AU
Eccentricity: 0.1089029
Inclination: 5.84815°
Absolute magnitude (H): 17.36
Perihelion: 2.304 AU
Aphelion: 2.867 AU