887 Alinda (// ə-LIN-də) is a very eccentric, near-Earth asteroid with an Earth minimum orbit intersection distance (MOID) of 0.092 AU. It is the namesake for the Alinda group of asteroids and measures about 4 kilometers in diameter. The stony S-type asteroid was discovered by German astronomer Max Wolf at Heidelberg Observatory on 3 January 1918.
|Discovered by||M. Wolf|
|Discovery site||Heidelberg Obs.|
|Discovery date||3 January 1918|
|MPC designation||(887) Alinda|
|Alinda (city) or|
|Orbital characteristics |
|Epoch 31 July 2016 (JD 2457600.5)|
|Uncertainty parameter 0|
|Observation arc||97.42 yr (35582 days)|
|Aphelion||3.8846 AU (581.13 Gm)|
|Perihelion||1.0731 AU (160.53 Gm)|
|2.4788 AU (370.82 Gm)|
|3.90 yr (1425.5 d)|
|0° 15m 9.144s / day|
|Earth MOID||0.0907705 AU (13.57907 Gm)|
|Jupiter MOID||1.32066 AU (197.568 Gm)|
|73.97 h (3.082 d)|
|B–V = 0.832|
U–B = 0.436
Tholen = S
Due to its high eccentricity and semi-major axis of 0.57 and 2.5 AU, respectively, it is a typical Amor III asteroid. It has both, a 1:3 orbital resonance with Jupiter and a close to 4:1 resonance with Earth. As a result of the resonance with Jupiter that has excited the eccentricity of the orbit over the eons, the asteroid's orbit has evolved to spend time outside of the main-belt. It is the namesake for the Alinda group of asteroids.
The asteroid's name had been proposed by H. Kobol. It is uncertain whether it refers to the ancient city of Alinda in modern western Turkey, or to a mythological figure of the Australian aboriginals.
- "JPL Small-Body Database Browser: 887 Alinda (1918 DB)" (2015-07-06 last obs.). Jet Propulsion Laboratory. Retrieved 3 May 2016.
- Schmadel, Lutz D. (2003). "(887) Alinda". Dictionary of Minor Planet Names – (887) Alinda. Springer Berlin Heidelberg. p. 80. doi:10.1007/978-3-540-29925-7_888. ISBN 978-3-540-29925-7.
- John S Lewis (2015-08-03). "The Alinda Family of Asteroids". Retrieved 2019-06-26.
- 887 Alinda at NeoDyS-2, Near Earth Objects—Dynamic Site
- 887 Alinda at the JPL Small-Body Database
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