(8438) Marila
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Asteroid (8438) Marila |
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|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt asteroid |
| Major semi-axis | 2.2671 AU |
| eccentricity | 0.1595 |
| Perihelion - aphelion | 1.9054 AU - 2.6287 AU |
| Inclination of the orbit plane | 3.1552 ° |
| Length of the ascending node | 121.5870 ° |
| Argument of the periapsis | 275.8139 ° |
| Time of passage of the perihelion | September 9, 2017 |
| Sidereal period | 3.41 a |
| Mean orbital velocity | 19.78 km / s |
| Physical Properties | |
| Medium diameter | 3.796 (± 0.041) km |
| Albedo | 0.240 (± 0.019) |
| Absolute brightness | 14.4 mag |
| history | |
| Explorer |
Cornelis Johannes van Houten , Ingrid van Houten-Groeneveld , Tom Gehrels |
| Date of discovery | May 13, 1971 |
| Another name | 4825 T-1 , 1986 TH 15 , 1991 AX 2 |
| 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. | |
(8438) Marila is an asteroid of the main inner belt that was discovered on May 25, 1971 by the Dutch astronomer couple Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld . The discovery took place during the 1st Trojan survey, during which Tom Gehrels surveyed field plates recorded by the 120 cm Oschin Schmidt telescope of the Palomar observatory at the University of Leiden , eleven years after the start of the Palomar-Leiden- Surveys .
The mean diameter of the asteroid is just under four kilometers.
(8438) Marila is named after the mountain duck , whose scientific name is Aythya marila . At the time the asteroid was named on February 2, 1999, the stock of the scallop in the Netherlands was endangered. In the Netherlands it appears as a winter guest .
Web links
- (8438) Marila in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (8438) Marila in the Small-Body Database of the Jet Propulsion Laboratory of NASA at the California Institute of Technology (Caltech) in Pasadena , California (English)
Individual evidence
- ^ Lutz D. Schmadel : Dictionary of Minor Planet Names . Springer, Heidelberg 2012, 6th edition, page 638 (English)