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2005 TN53

Astronomical observation
2005 TN₅₃ is an inclined Neptune trojan leading Neptune's orbit in the outer Solar System, approximately 80 kilometers in diameter. It was first observed on 7 October 2005, by American astronomers Scott Sheppard and Chad Trujillo at Las Campanas... Wikipedia
Apparent magnitude (V): 23.7
Asteroid group: Neptune trojan
Discovered: October 7, 2005
Discovery site: Las Campanas Observatory
Orbits: Sun
Absolute magnitude: 9