2008 LC₁₈

2008 LC₁₈
Discovery
Discovered by	S. S. Sheppard; C. Trujillo;
Discovery site	Mauna Kea Obs.
Discovery date	7 June 2008
Designations
MPC designation	2008 LC18
Minor planet category	Neptune trojan; L5; centaur; distant;
Orbital characteristics
	Epoch 21 November 2025 (JD 2461000.5)
	Uncertainty parameter 4
Observation arc	15.75 yr (5,753 days)
Aphelion	32.448 AU
Perihelion	27.326 AU
Semi-major axis	29.887 AU
Eccentricity	0.0857
Orbital period (sidereal)	163.39 yr (59,679 days)
Mean anomaly	204.47°
Mean motion	0° 0m 21.6s / day
Inclination	27.595°
Longitude of ascending node	88.581°
Argument of perihelion	5.8080°
Physical characteristics
Dimensions	98 km (est. at 0.10); 100 km;
Apparent magnitude	23.2
Absolute magnitude (H)	8.21

2008 LC₁₈ is a Neptune trojan first observed on 7 June 2008 by American astronomers Scott Sheppard and Chad Trujillo using the Subaru Telescope at Mauna Kea Observatories on Hawaii, United States. It was the first object found in Neptune's trailing L₅ Lagrangian point and measures approximately 100 kilometers in diameter.