621616 2009 ST221
Main-belt minor planet
- Designation
- (621616) 2009 ST221
- Class
- Main-belt
- Semi-major axis
- 3.026652 AU
- Eccentricity
- 0.1697566
- Inclination
- 5.04967°
- Absolute magnitude (H)
- 17.31
- Perihelion
- 2.513 AU
- Aphelion
- 3.540 AU
Main-belt minor planet