12639 Tonkoopman

Main-belt minor planet

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Designation: (12639) Tonkoopman
Class: Main-belt
Semi-major axis: 2.6210988 AU
Eccentricity: 0.1373742
Inclination: 2.68933°
Absolute magnitude (H): 14.78
Perihelion: 2.261 AU
Aphelion: 2.981 AU