Minorplanet: | yes |
Background: |
|
212 Medea | |
Discovered: | 6 February 1880 |
Mpc Name: | (212) Medea |
Pronounced: | [1] |
Alt Names: | A880 CA, 1930 FW |
Epoch: | 31 July 2016 (JD 2457600.5) |
Observation Arc: | 136.05 yr (49694 d) |
Uncertainty: | 0 |
Semimajor: | 3.11575AU |
Perihelion: | 2.78929AU |
Aphelion: | 3.4422abbr=onNaNabbr=on |
Eccentricity: | 0.10478 |
Period: | 5.50 yr (2008.8 d) |
Inclination: | 4.2636° |
Asc Node: | 313.478° |
Arg Peri: | 100.91° |
Mean Motion: | / day |
Mean Diameter: | 144.13 ± 7.23 km |
Density: | 8.41 ± 1.43 g/cm3 |
Rotation: | 10.283abbr=onNaNabbr=on 10.12 h |
Spectral Type: | DCX: |
Abs Magnitude: | 8.28 |
212 Medea is a very large main-belt asteroid that was discovered by Johann Palisa on February 6, 1880, in Pola, and was named after Medea, a figure in Greek mythology.[2]
Photometric observations of this asteroid in 1987 gave an incomplete lightcurve with a period of 10.12 ± 0.06 hours and a brightness variation of 0.13 in magnitude. This object has a spectrum that matches a DCX: classification. Lightcurve data has also been recorded by observers at the Antelope Hill Observatory, which has been designated as an official observatory by the Minor Planet Center. They found a period of 10.283 hours with a brightness variation of 0.08 magnitude.[3]