887 Alinda // 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|
|Alinda (city) or|
|Epoch 31 July 2016 (JD 2457600.5)|
|Uncertainty parameter 0|
|Observation arc||97.42 yr (35,582 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)|
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.
- "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 (3 August 2015). "The Alinda Family of Asteroids". Retrieved 26 June 2019.
- 887 Alinda at NeoDyS-2, Near Earth Objects—Dynamic Site
- 887 Alinda at ESA–space situational awareness
- 887 Alinda at the JPL Small-Body Database