2011 UN63

2011 UN₆₃
Discovery
Discovered by	Mt. Lemmon Survey
Discovery date	21 October 2011
Designations
MPC designation	2011 UN63
Minor planet category	Martian L5
Orbital characteristics
	Epoch 13 January 2016 (JD 2457400.5)
	Uncertainty parameter 1
Observation arc	1587 days (4.34 yr)
Aphelion	1.6222522 AU (242.68547 Gm)
Perihelion	1.4253677 AU (213.23197 Gm)
Semi-major axis	1.5238099 AU (227.95872 Gm)
Eccentricity	0.0646027
Orbital period (sidereal)	1.88 yr (687.06 d)
Mean anomaly	101.29418°
Mean motion	0° 31m 26.298s / day
Inclination	20.36086°
Longitude of ascending node	223.55542°
Argument of perihelion	165.28918°
Earth MOID	0.434823 AU (65.0486 Gm)
Jupiter MOID	3.54877 AU (530.888 Gm)
Physical characteristics
Dimensions	560 m
Geometric albedo	0.5–0.05 (assumed)
Absolute magnitude (H)	19.7

2011 UN₆₃, also written as 2011 UN63, is a Mars trojan, an asteroid orbiting near the L₅ point of Mars (60 degrees behind Mars on its orbit).^[2]^[3]

^ Cite error: The named reference jpl was invoked but never defined (see the help page).
^ de la Fuente Marcos, C.; de la Fuente Marcos, R. (April 2013). "Three new stable L5 Mars Trojans". Monthly Notices of the Royal Astronomical Society: Letters. 432 (1): L31–L35. arXiv:1303.0124. Bibcode:2013MNRAS.432L..31D. doi:10.1093/mnrasl/slt028.
^ Cite error: The named reference christou was invoked but never defined (see the help page).

[jpl-1] Cite error: The named reference jpl was invoked but never defined (see the help page).

[dynamics-2] Fuente Marcos, C.; de la Fuente Marcos, R. (April 2013). "Three new stable L5 Mars Trojans". Monthly Notices of the Royal Astronomical Society: Letters. 432 (1): L31–L35. arXiv:1303.0124. Bibcode:2013MNRAS.432L..31D. doi:10.1093/mnrasl/slt028.

[christou-3] Cite error: The named reference christou was invoked but never defined (see the help page).

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