Английская Википедия:2011 SL25
Шаблон:Use dmy dates Шаблон:Infobox planet
Шаблон:Mp, also written as 2011 SL25, is an asteroid and Mars trojan candidate that shares the orbit of the planet Mars at its Шаблон:L5 point.[1]
Discovery, orbit and physical properties
Шаблон:Mp was discovered on 21 September 2011 at the Alianza S4 Observatory Шаблон:Obscode on Cerro Burek in Argentina[2] 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.[2] This object has noticeable orbital inclination (21.5°).[2] Its orbit was initially poorly constrained, with only 76 observations over 42 days, but was recovered in January 2014.[3] Шаблон:Mp has an absolute magnitude of 19.5 which gives a characteristic diameter of 575 m.[3]
Mars trojan and orbital evolution
Recent calculations indicate that it is a stable Шаблон:L5 Mars Trojan with a libration period of 1400 yr and an amplitude of 18°.[1][4] values as well as its short-term orbital evolution are similar to those of 5261 Eureka.[5][6]
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.[1]
See also
- 5261 Eureka (1990 MB)
- Шаблон:Mpl
- Шаблон:Mpl
- Шаблон:Mpl
- Шаблон:Mpl
- Шаблон:Mpl
- Шаблон:Mpl
- Шаблон:Mpl
- Шаблон:Mpl
- Шаблон:Mpl
- Шаблон:Mpl
- Шаблон:Mpl
- Шаблон:Mpl
- Шаблон:Mpl
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
- Шаблон:Mp data at MPC.
- Шаблон:AstDys
- Шаблон:ESA-SSA
- Шаблон:JPL small body
Шаблон:Mars Шаблон:Portal bar Шаблон:Small Solar System bodies Шаблон:Authority control
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- Astronomical objects discovered in 2011
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