(8435) Anser
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Asteroid (8435) Anser |
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|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt asteroid |
| Major semi-axis | 2.2201 AU |
| eccentricity | 0.1690 |
| Perihelion - aphelion | 1.8448 AU - 2.5954 AU |
| Inclination of the orbit plane | 4.7980 ° |
| Length of the ascending node | 31.2562 ° |
| Argument of the periapsis | 18.7071 ° |
| Time of passage of the perihelion | 19th April 2017 |
| Sidereal period | 3.31 a |
| Mean orbital velocity | 19.99 km / s |
| Physical Properties | |
| Medium diameter | 2.944 (± 0.471) km |
| Albedo | 0.295 (± 0.115) |
| Absolute brightness | 14.7 mag |
| history | |
| Explorer |
Cornelis Johannes van Houten , Ingrid van Houten-Groeneveld , Tom Gehrels |
| Date of discovery | September 26, 1960 |
| Another name | 6643 PL , 1990 VA 1 |
| Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. | |
(8435) Anser is an asteroid of the main inner belt that was discovered on September 24, 1960 by the Dutch astronomer couple Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld . The discovery came about as part of the Palomar-Leiden survey , during which Tom Gehrels examined field plates recorded at the University of Leiden with the 120 cm Oschin Schmidt telescope of the Palomar observatory .
The diameter of the asteroid was calculated to be 2.944 (± 0.471) km .
In a publication from 1995 (et al.), The Italian astronomer Vincenzo Zappalà defines an asteroid belonging to the Flora family, a large group of asteroids named after (8) Flora . Asteroids of this family move in a 4: 9 orbital resonance with the planet Mars around the sun . The group is also called the Ariadne family, after the asteroid (43) Ariadne .
(8435) Anser is named after the gray goose whose scientific name is Anser anser . The reason for choosing the name: When the asteroid was named, the population of gray goose in the Netherlands was endangered (extinct in Benelux around 1910, only ten breeding pairs in 1971). It was named on February 2, 1999. In the meantime (as of 2010) there are almost 500,000 overwintering birds in the Benelux countries, so that the population is no longer classified as endangered.
Web links
- (8435) Anser in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (8435) Anser in the Small-Body Database of the Jet Propulsion Laboratory .
Individual evidence
- ↑ Database with the assignment of 12,487 asteroids to asteroid groups (English)
- ^ Lutz D. Schmadel : Dictionary of Minor Planet Names . Springer, Heidelberg 2012, 6th edition, page 637 (English)
- ↑ Development of the gray goose population in the Netherlands of the Sovon Vogelonderzoek Nederland (Dutch)