2011 SL25

Asteroid February 2020 yes #FA8072 2011 SL 25 Alianza S4 Cerro Burek 21 September 2011 2011 SL 25 Martian L5 125 13 January 2016 (JD 2457400.5) 1.698231 AU Gm on on 1.349540 AU Gm on 1.523885 AU Gm on 0.114409 1.88 yr (687.11 d) 21.49603° 9.413048° 55.63918° 53.31859° 550 230 m 0.5-0.05 (assumed) 19.4 0.5239330 ms /day 1637 days (4.48 yr) 2 0.396438 AU Gm on 3.52931 AU Gm on 2011 SL 25 is an asteroid and Mars trojan candidate that shares the orbit of the planet Mars at its point.Three new stable L5 Mars Trojans C. de la Fuente Marcos de la Fuente Marcos, R. April 2013 Monthly Notices of the Royal Astronomical Society: Letters 432 1 L31–L35 10.1093/mnrasl/slt028 free 1303.0124 2013MNRAS.432L..31D 118693165 Discovery, orbit and physical properties 2011 SL 25 was discovered on 21 September 2011 at the Alianza S4 Observatory I08 on Cerro Burek in Argentina and classified as Mars-crosser by the Minor Planet Center. It follows a relatively eccentric orbit (0.11) with a semi-major axis of 1.52 AU.MPC data on 2011 SL25 This object has noticeable orbital inclination (21.5°). Its orbit was initially poorly constrained, with only 76 observations over 42 days, but was recovered in January 2014.http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011SL25;cad=1 JPL Small-Body Database Browser: (2011 SL25) Jet Propulsion Laboratory 31 March 2016 2011 SL 25 has an absolute magnitude of 19.5 which gives a characteristic diameter of 575 m. Mars trojan and orbital evolution Recent calculations indicate that it is a stable Mars Trojan with a libration period of 1400 yr and an amplitude of 18°.Christou, A. A. Orbital clustering of Martian Trojans: An asteroid family in the inner solar system? Icarus 224 1 144–153 2013 10.1016/j.icarus.2013.02.013 2013Icar..224..144C 1303.0420 119186791 values as well as its short-term orbital evolution are similar to those of 5261 Eureka.Christou Apostolos A. Borisov Galin Dell'Oro Aldo Cellino Alberto Devogèle Maxime Composition and origin of L5 Trojan asteroids of Mars: Insights from spectroscopy Icarus 354 1 113994 (22 pages) January 2021 10.1016/j.icarus.2020.113994 2021Icar..35413994C 2010.10947 224814529 Using Mars co-orbitals to estimate the importance of rotation-induced YORP break-up events in Earth co-orbital space Carlos de la Fuente Marcos de la Fuente Marcos Raúl March 2021 Monthly Notices of the Royal Astronomical Society 501 4 6007–6025 10.1093/mnras/stab062 free 0035-8711 2101.02563 2021MNRAS.501.6007D https://academic.oup.com/mnras/article-abstract/501/4/6007/6081058 Origin Long-term numerical integrations show that its orbit is stable on Gyr time-scales (1 Gyr = 1 billion years). It appears to be stable at least for 4.5 Gyr but its current orbit indicates that it has not been a dynamical companion to Mars for the entire history of the Solar System. See also 5261 Eureka (1990 MB) (101429) 1998 VF 31 (121514) 1999 UJ 7 (311999) 2007 NS 2 (385250) 2001 DH 47 (816688) 2011 SC 191 2009 SE 2011 SP 189 2011 UB 256 2011 UN 63 2016 CP 31 2018 EC 4 2018 FC 4 2020 VT 1 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 2011 SL 25 data at MPC. 2011SL25 2011SL25 Solar System Category:Mars trojans * Category:Minor planet object articles (unnumbered) 20110921