(4636) Chile
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Asteroid (4636) Chile |
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| Properties of the orbit ( animation ) | |
| Orbit type | Middle main belt asteroid |
| Asteroid family | Eunomia family |
| Major semi-axis | 2.6123 AU |
| eccentricity | 0.1610 |
| Perihelion - aphelion | 2.1917 AU - 3.0328 AU |
| Inclination of the orbit plane | 13.7774 ° |
| Length of the ascending node | 177.0053 ° |
| Argument of the periapsis | 202.9545 ° |
| Sidereal period | 4.22 a |
| Mean orbital velocity | 18.42 km / s |
| Physical Properties | |
| Absolute brightness | 12.7 mag |
| history | |
| Explorer | Eric Walter Elst , Guido Pizarro |
| Date of discovery | February 13, 1988 |
| Another name | 1988 CJ 5 , 1931 TJ 4 , 1952 SQ, 1986 TO 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. | |
(4636) Chile is an asteroid of the central main belt discovered on February 13, 1988 by the Belgian astronomer Eric Walter Elst at the La Silla Observatory of the European Southern Observatory in Chile ( IAU code 809). For this purpose, photo plates from the 1-meter Schmidt telescope were used, which were taken by the Chilean astronomer Guido Pizarro and evaluated by Erik Walter Elst.
There had already been several unconfirmed sightings of the asteroid: in October 1931 with the provisional designation 1931 TJ 4 at the Lowell Observatory in Arizona , on September 24, 1952 (1952 SQ) at the Goethe Link Observatory in Indiana and in 1986 at the Anderson Mesa Station of the Lowell Observatory (1986 TO 2 ).
The asteroid belongs to the Eunomia family, a group named after (15) Eunomia , to which probably five percent of the asteroids in the main belt belong. According to the SMASS classification (Small Main-Belt Asteroid Spectroscopic Survey) , a spectroscopic study by Gianluca Masi , Sergio Foglia and Richard P. Binzel in (4636) Chile assumed a light surface, so it could, roughly speaking, be around trade an S asteroid .
The timeless (non- osculating ) orbital elements of (4636) Chile are almost identical to those of the smaller one, assuming the absolute brightness of 14.9 compared to 12.7, asteroids (72323) 2001 BQ 50 .
(4636) Chile was named on February 18, 1992 after the South American country Chile.
Web links
- (4636) Chile in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (4636) Chile in the Small-Body Database of the Jet Propulsion Laboratory (English).
- Discovery Circumstances of (4636) Chile according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ Minor Planet Discovered at ESO is Named "Chile" . Article in The Messenger (publication organ of the European Southern Observatory), number 67, 1992, p. 33f ( PDF , English; 464 kB)
- ↑ (4636) Chile at the IAU Minor Planet Center (English)
- ^ Gianluca Masi, Sergio Foglia, Richard P. Binzel: Search for Unusual Spectroscopic Candidates Among 40313 minor planets from the 3rd Release of the Sloan Digital Sky Survey Moving Object Catalog . (English)
- ↑ subdivision of asteroids to S-types, C-types and V-types (English)
- ↑ The family status of the asteroids in the AstDyS-2 database (English, HTML; 51.4 MB)