(4872) Grieg
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Asteroid (4872) Grieg |
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| Properties of the orbit ( animation ) | |
| Orbit type | Middle main belt asteroid |
| Major semi-axis | 2.7281 AU |
| eccentricity | 0.0557 |
| Perihelion - aphelion | 2.5762 AU - 2.8800 AU |
| Inclination of the orbit plane | 10.6988 ° |
| Length of the ascending node | 111.1988 ° |
| Argument of the periapsis | 8.2445 ° |
| Time of passage of the perihelion | March 27, 2017 |
| Sidereal period | 4.51 a |
| Mean orbital velocity | 18.04 km / s |
| Physical Properties | |
| Absolute brightness | 13.1 mag |
| history | |
| Explorer | Freimut Börngen |
| Date of discovery | December 25, 1989 |
| Another name | 1989 YH 7 , 1975 XL 6 , 1986 EV 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. | |
(4872) Grieg is an asteroid of the middle main belt , which was discovered by the German astronomer Freimut Börngen on December 25, 1989 at the Karl Schwarzschild Observatory ( IAU code 033) in the Tautenburg Forest . The asteroid had already been sighted: on December 6th and 7th, 1975 under the provisional designation 1975 XL 6 at the La Silla Observatory of the European Southern Observatory in Chile and on March 6th, 1986 (1986 EV 1 ) at Anderson Mesa Station of the Lowell Observatory in Arizona .
According to the SMASS classification (Small Main-Belt Asteroid Spectroscopic Survey) , a spectroscopic study by Gianluca Masi , Sergio Foglia and Richard P. Binzel at (4872) Grieg assumed a dark surface, so it could, roughly speaking, be around trade a C asteroid .
Mean distance from the Sun ( major semiaxis ), eccentricity and inclination of the orbit plane of the asteroid roughly correspond to the Dora family, a group of asteroids named after (668) Dora .
The track from (4872) Grieg was secured in 1991 so that numbering could be assigned. In the same year, on August 25, 1991, the asteroid was named after the Norwegian composer Edvard Grieg (1843-1907) at the suggestion of Freimut Börngen . The dedication highlighted Grieg's incidental music Peer Gynt from 1875 and the piece Hochzeit auf Troldhaugen from 1896. As early as 1985, an impact crater on the northern hemisphere of the planet Mercury was named after Edvard Grieg: Mercury crater Grieg .
See also
Web links
- (4872) Grieg in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (4872) Grieg in the Small-Body Database of the Jet Propulsion Laboratory of NASA at the California Institute of Technology (Caltech) in Pasadena , California (English)
- Discovery Circumstances by (4872) Grieg according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ Observations by (4872) Grieg on minorplanetcenter.net (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)
- ↑ Small planets discovered on Tautenburger Platten on the website of Freimut Börngen
- ↑ Merkurkrater Grieg in the Gazetteer of Planetary Nomenclature of the IAU (WGPSN) / USGS