2011 SP189

2011 SP189
Discovery
Discovered byMt. Lemmon Survey
Discovery date29 September 2011
Designations
2011 SP189
Martian L5 Martian L5
Orbital characteristics[1]
Epoch 31 May 2020 (JD 2459000.5)
Uncertainty parameter 0
Observation arc2390 days (6.54 yr)
Aphelion1.5852549 AU (237.15076 Gm)
Perihelion1.462275 AU (218.7532 Gm)
1.5237649 AU (227.95198 Gm)
Eccentricity0.040354
1.88 yr (687.0295 d)
110.302°
0° 31m 26.382s /day
Inclination19.89778°
0.663826°
122.545°
Earth MOID0.490971 AU (73.4482 Gm)
Jupiter MOID3.40399 AU (509.230 Gm)
Physical characteristics
300 m
0.5-0.05 (assumed)
20.9

2011 SP189 is a small asteroid and Mars trojan orbiting near the L5 point of Mars (60 degrees behind Mars on its orbit).[2][3][4]

  1. ^ Cite error: The named reference jpl was invoked but never defined (see the help page).
  2. ^ Christou, Apostolos A.; Borisov, Galin; Dell'Oro, Aldo; Jacobson, Seth A.; Cellino, Alberto; Unda-Sanzana, Eduardo (January 2020). "Population control of Mars Trojans by the Yarkovsky & YORP effects". Icarus. 335 (1): 113370 (34 pages). arXiv:1907.12858. Bibcode:2020Icar..33513370C. doi:10.1016/j.icarus.2019.07.004. S2CID 198985887.
  3. ^ Christou, Apostolos A.; Borisov, Galin; Dell'Oro, Aldo; Cellino, Alberto; Devogèle, Maxime (January 2021). "Composition and origin of L5 Trojan asteroids of Mars: Insights from spectroscopy". Icarus. 354 (1): 113994 (22 pages). arXiv:2010.10947. Bibcode:2021Icar..35413994C. doi:10.1016/j.icarus.2020.113994. S2CID 224814529.
  4. ^ de la Fuente Marcos, Carlos; de la Fuente Marcos, Raúl (March 2021). "Using Mars co-orbitals to estimate the importance of rotation-induced YORP break-up events in Earth co-orbital space". Monthly Notices of the Royal Astronomical Society. 501 (4): 6007–6025. arXiv:2101.02563. Bibcode:2021MNRAS.501.6007D. doi:10.1093/mnras/stab062.