21774 O'Brien

Main-belt minor planet

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Designation: (21774) O'Brien
Class: Main-belt
Semi-major axis: 2.3389301 AU
Eccentricity: 0.083949
Inclination: 6.66343°
Absolute magnitude (H): 15.71
Perihelion: 2.143 AU
Aphelion: 2.535 AU