(887) Alinda ( Latin: Alinda ) is a near - Earth asteroid from the Amur ( III ) group . It was discovered on January 3, 1918 by the German astronomer Max Wolf at the Heidelberg-Königstuhl Observatory , Germany .
| (887) Alinda | |
|---|---|
| Asteroid | |
| Opening | |
| Discoverer | Max Wolf |
| Place of discovery | |
| Discovery date | January 3, 1918 |
| Alternative notation | 1918 DB |
| Category | NEA ( Cupids ) |
| Orbital characteristics | |
| Age of November 30, 2008 | |
| Eccentricity ( e ) | 0.567 |
| Semimajor axis ( a ) | 370.853 million km (2,479 AU ) |
| Perihelion ( q ) | 160.579 million km (1,073 AU) |
| Aphelion ( Q ) | 581.127 million km (3.885 AU) |
| Circulation Period ( P ) | 1,425,651 days (3,903 g ) |
| Average orbital speed | 17,283 km / s |
| Inclination ( i ) | 9.353 ° |
| Longitude node (Ω) | 110.567 ° |
| Perihelion Argument (ω) | 350.326 ° |
| Median Anomaly ( M ) | 313.536 ° |
| physical characteristics | |
| Diameter | 4,2 km |
| Weight | ? kg |
| Density | ? g / cm³ |
| Acceleration of gravity on the surface | ? m / s² |
| 2nd space speed | ? m / s |
| Rotation period | 73.97 h |
| Spectral class | S |
| Absolute magnitude | 13.76 m |
| Albedo | 0.31 |
According to the mythology of the Australian aborigines , Alinda is a man in the moon . He drowned his two sons when they returned from fishing and lied that they had not caught anything. After that, Alinda was burned by two of his wives. According to an alternative version of the name of the asteroid, Alinda is the name of an ancient city in Caria . [2]
Content
Features
Alinda is the ancestor of the eponymous family of asteroids moving in orbital resonance with Jupiter about 1 to 3. In addition, the asteroid itself also moves in orbital resonance with the Earth about 1: 4 [3] Using the example of Alinda and another asteroid, (1915) Quetzalcoatl , it was confirmed the existence of a group of asteroids associated with Kirkwood hatches (that is, in resonant motion with Jupiter) [4]
Based on a study of the asteroids of Alinda and (2062) Aton , whose aphelion is located near the perihelion of Alinda (and near the Earth’s orbit), scientists suggested that the orbits of similar objects could form as a result of a collision about 1400 years ago, with the possible participation of other near-Earth small objects, including meteor shower Quadrantida [5] .
An asteroid in perihelion approaches the Earth’s orbit, in an aphelion it passes through the main asteroid belt , orbiting the Sun for 3.90 years.
See also
- List of Asteroids ( 801-900 )
- Classifications of Minor Planets
Notes
- ↑ JPL Small-Body Database
- ↑ Schmadel, Lutz D. Dictionary of minor planet names . - Springer 2003. (English)
- ↑ Gérard Faure Description of the system of asteroids as of May 20, 2004 (link not available) . Archived on November 5, 2004. (eng.)
- ↑ Simonenko, AN; LM Sherbaum and VG Kruchinenko. On the character of evolution of orbits in the vicinity of the 1: 3 Kirkwood gap (English) // Icarus: journal. - 1979. - Vol. 40 . - P. 335-340 . (eng.)
- ↑ A. Rosaev Aten-Alinda orbital evolution: the example of possible interacting orbits . Archived December 10, 2012. FGUP NPC "Nedra"