2018 EC4

2018 EC₄
Discovery
Discovered by	Mt. Lemmon Survey
Discovery date	10 March 2018
Designations
MPC designation	2018 EC₄
Minor planet category	Martian L5
Orbital characteristics
Epoch 31 May 2020 (JD 2459000.5)
Uncertainty parameter 0
Observation arc	3131 days (8.57 yr)
Aphelion	1.61579336 AU (241.719246 Gm)
Perihelion	1.43135923 AU (214.128293 Gm)
Semi-major axis	1.52357630 AU (227.923770 Gm)
Eccentricity	0.06052671
Orbital period (sidereal)	1.88 yr (686.90193 d)
Mean anomaly	203.4934°
Mean motion	0° 31^m 26.732^s /day
Inclination	21.835796°
Longitude of ascending node	47.371564°
Argument of perihelion	344.1754°
Earth MOID	0.443437 AU (66.3372 Gm)
Jupiter MOID	3.54199 AU (529.874 Gm)
Physical characteristics
Dimensions	300 m
Geometric albedo	0.5-0.05 (assumed)
Absolute magnitude (H)	20.1

2018 EC₄ is a small asteroid and Mars trojan orbiting near the L₅ point of Mars (60 degrees behind Mars on its orbit).