21821 Billryan

Main-belt minor planet

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Designation: (21821) Billryan
Class: Main-belt
Semi-major axis: 2.9404133 AU
Eccentricity: 0.0904487
Inclination: 2.88753°
Absolute magnitude (H): 14.84
Perihelion: 2.674 AU
Aphelion: 3.206 AU