128859 2004 ST21

Main-belt minor planet

Designation: (128859) 2004 ST21
Class: Main-belt
Semi-major axis: 2.3196057 AU
Eccentricity: 0.1167045
Inclination: 4.30023°
Absolute magnitude (H): 17.11
Perihelion: 2.049 AU
Aphelion: 2.590 AU