2011 SC191

2011 SC₁₉₁
Discovery
Discovered by	Mt. Lemmon Survey
Discovery date	31 October 2011
Designations
MPC designation	2011 SC₁₉₁
Minor planet category	Martian L5
Orbital characteristics
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc	4715 days (12.91 yr)
Aphelion	1.5910690 AU (238.02053 Gm)
Perihelion	1.4565161 AU (217.89171 Gm)
Semi-major axis	1.5237925 AU (227.95611 Gm)
Eccentricity	0.0441507
Orbital period (sidereal)	1.88 yr (687.05 d)
Mean anomaly	273.27420°
Mean motion	0° 31^m 26.331^s /day
Inclination	18.74554°
Longitude of ascending node	5.780691°
Argument of perihelion	196.33006°
Earth MOID	0.459583 AU (68.7526 Gm)
Jupiter MOID	3.37018 AU (504.172 Gm)
Physical characteristics
Dimensions	600 m
Geometric albedo	0.5-0.05 (assumed)
Absolute magnitude (H)	19.3

2011 SC₁₉₁ is a small asteroid and Mars trojan orbiting near the L₅ point of Mars (60 degrees behind Mars on its orbit).