is a small asteroid and Mars trojan orbiting near the of Mars (60 degrees behind Mars on its orbit).
Discovery, orbit and physical properties was first observed on 16 September 2009 by the Catalina Sky Survey (CSS). Its orbit is characterized by low eccentricity (0.065), moderate inclination (20.6°) and a semi-major axis of 1.52 AU.MPC data on 2009 SE Upon discovery, it was classified as Mars-crosser by the Minor Planet Center. Its orbit is well determined as it is currently (as of November 2025) based on 60 observations with a data-arc span of 5,498 days. has an absolute magnitude of 20.13 which gives a characteristic diameter of 400 m.
Mars trojan and orbital evolution Recent calculations indicate that it is a stable Mars trojan with a libration period of 1430 yr and an amplitude of 70°. The libration amplitude is not similar to that of 5261 Eureka and related objects.
See also
References
Further reading Three new stable L5 Mars Trojans de la Fuente Marcos, C., de la Fuente Marcos, R. 2013, Monthly Notices of the Royal Astronomical Society: Letters, Vol. 432, Issue 1, pp. 31–35. Orbital clustering of Martian Trojans: An asteroid family in the inner solar system? Christou, A. A. 2013, Icarus, Vol. 224, Issue 1, pp. 144–153.
External links data at MPC.