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 Observatory in the Atacama desert of Chile. It was the third such body to be discovered, and the first with a significant orbital inclination, which showed that the population as a whole is very dynamically excited.
Orbit and classification
Neptune trojans are resonant trans-Neptunian objects in a 1:1 mean-motion orbital resonance with Neptune. These Trojans have a semi-major axis and an orbital period very similar to Neptune's.belongs to the larger group, which leads 60° ahead Neptune's orbit. It orbits the Sun with a semi-major axis of 30.014 AU at a distance of 28.1–31.9 AU once every 164 years and 5 months. Its orbit has an eccentricity of 0.06 and an inclination of 25° with respect to the ecliptic.
It has the same orbital period as Neptune and orbits at the Lagrangian point about 60° ahead of Neptune. It has an inclination of 25 degrees.