Name: (2009 HD21)
Reference ID: 3457843
Designation: 2009 HD21
First Observation Date: 2009-03-24
Last Observation Date: 2018-03-18
Absolute Magnitude: 18.2
Is Potentially Hazardous: TRUE
Is Sentry Object: FALSE
Min Kilometers Est. Diameter: 0.6089126221
Max Kilometers Est. Diameter: 1.3615700154
Orbit ID: 46
Orbit Class Type: APO
Orbit Class Description: Near-Earth asteroid orbits which cross the Earth’s orbit similar to that of 1862 Apollo
Perihelion Distance: 0.8645204156407760
Aphelion Distance: 4.679061767318460
Name | First Observation | Last Observation | Orbit Class | Absolute Magnitude |
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