astro.wikisort.org - Asteroid
887 Alinda (/əˈlɪndə/) 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.
| Discovery [1] | |
|---|---|
| Discovered by | M. Wolf |
| Discovery site | Heidelberg Obs. |
| Discovery date | 3 January 1918 |
| Designations | |
MPC designation | (887) Alinda |
| Pronunciation | /əˈlɪndə/ |
Named after | Alinda (city) or Aboriginal mythology[2] |
Alternative designations | 1918 DB |
Minor planet category |
|
| Orbital characteristics [1] | |
| 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) |
Semi-major axis | 2.4788 AU (370.82 Gm) |
| Eccentricity | 0.56711 |
Orbital period (sidereal) | 3.90 yr (1425.5 d) |
Mean anomaly | 300.87° |
Mean motion | 0° 15m 9.144s / day |
| Inclination | 9.3563° |
Longitude of ascending node | 110.55° |
Argument of perihelion | 350.34° |
| Earth MOID | 0.0907705 AU (13.57907 Gm) |
| Jupiter MOID | 1.32066 AU (197.568 Gm) |
| TJupiter | 3.221 |
| Physical characteristics | |
Mean radius | 2.1 km |
Synodic rotation period | 73.97 h (3.082 d) |
Geometric albedo | 0.31 |
Spectral type |
|
Absolute magnitude (H) | 13.4 |
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.[3] 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.
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
- "JPL Small-Body Database Browser: 887 Alinda (1918 DB)" (2015-07-06 last obs.). Jet Propulsion Laboratory. Archived from the original on 13 December 2019. 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.
External links
- 887 Alinda at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- 887 Alinda at ESA–space situational awareness
- 887 Alinda at the JPL Small-Body Database
 | This near-Earth asteroid-related article is a stub. You can help Wikipedia by expanding it. |
На других языках
[de] (887) Alinda
(887) Alinda ist ein Planetoid aus der Gruppe der Amor-Asteroiden. Alinda wurde am 3. Januar 1918 von dem deutschen Astronomen Max Wolf entdeckt. Benannt ist der Asteroid entweder nach der Stadt Alinda in Kleinasien oder nach einer Figur aus der Mythologie der australischen Aborigines (Mann im Mond).- [en] 887 Alinda
[es] (887) Alinda
(887) Alinda es un asteroide perteneciente a los asteroides Amor descubierto el 3 de enero de 1918 por Maximilian Franz Wolf desde el observatorio de Heidelberg-Königstuhl, Alemania. Lleva el nombre de un personaje de la mitología aborigen australiana o el de una antigua ciudad de Asia Menor.[2][ru] (887) Алинда
(887) Алинда (лат. Alinda) — околоземный астероид из группы Амура (III). Открыт 3 января 1918 года немецким астрономом Максом Вольфом в обсерватории Хайдельберг-Кёнигштуль, Германия.Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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