887 Alinda
| Discovery [1] | |
|---|---|
| Discovered by | M. Wolf |
| Discovery site | Heidelberg Obs. |
| Discovery date | 3 January 1918 |
| Designations | |
| MPC designation | 887 Alinda |
|
Named after
|
Alinda (city) or Aboriginal mythology[2] |
| 1918 DB | |
| Amor, NEO | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 97.42 yr (35,582 days) |
| Aphelion | 3.8848 AU |
| Perihelion | 1.0724 AU |
| 2.4786 AU | |
| Eccentricity | 0.5673 |
| 3.90 yr (1425.3 days) | |
| 199.86° | |
| Inclination | 9.3584° |
| 110.55° | |
| 350.34° | |
| Earth MOID | 0.0923 AU |
| Physical characteristics | |
| Dimensions | 4.2 km |
| 73.97 h | |
| 0.31 | |
| B–V = 0.832 U–B = 0.436 Tholen = S |
|
| 13.4 | |
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887 Alinda (/əˈlɪndə/ 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 family 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.
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.[1] In addition, because its orbit also lies within the asteroid belt, it is often classified as a main-belt asteroid.
Alinda makes close approaches to Earth, including a pass in January 2025, where it comes within 0.0821 AU (12,280,000 km; 7,630,000 mi) of Earth.[1]
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.[2]
References
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- Discovery Circumstances: Numbered Minor Planets
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