![]() 3D convex shape model of 212 Medea | |
Discovery | |
---|---|
Discovered by | Johann Palisa |
Discovery date | 6 February 1880 |
Designations | |
(212) Medea | |
Pronunciation | /mɪˈdiːə/ [1] |
Named after | Medea |
A880 CA, 1930 FW | |
Main belt | |
Orbital characteristics [2] | |
Epoch 31 July 2016 ( JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 136.05 yr (49694 d) |
Aphelion | 3.4422 AU (514.95 Gm) |
Perihelion | 2.78929 AU (417.272 Gm) |
3.11575 AU (466.110 Gm) | |
Eccentricity | 0.10478 |
5.50 yr (2008.8 d) | |
28.1280 ° | |
0° 10m 45.156s / day | |
Inclination | 4.2636° |
313.478° | |
100.91° | |
Physical characteristics | |
136.12±2.5
km
[2] 144.13 ± 7.23 km [3] | |
Mass | (1.32 ± 0.10) × 1019 kg [3] |
Mean
density | 8.41 ± 1.43 g/cm3 [3] |
10.283
h (0.4285
d)
[2] 10.12 h [4] | |
0.0465±0.002 | |
DCX: [4] | |
8.28 | |
Medea ( minor planet designation: 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. [5]
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. [4] Lightcurve data has also been recorded by observers at the Antelope Hill Observatory ( H09), 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. [6]
![]() 3D convex shape model of 212 Medea | |
Discovery | |
---|---|
Discovered by | Johann Palisa |
Discovery date | 6 February 1880 |
Designations | |
(212) Medea | |
Pronunciation | /mɪˈdiːə/ [1] |
Named after | Medea |
A880 CA, 1930 FW | |
Main belt | |
Orbital characteristics [2] | |
Epoch 31 July 2016 ( JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 136.05 yr (49694 d) |
Aphelion | 3.4422 AU (514.95 Gm) |
Perihelion | 2.78929 AU (417.272 Gm) |
3.11575 AU (466.110 Gm) | |
Eccentricity | 0.10478 |
5.50 yr (2008.8 d) | |
28.1280 ° | |
0° 10m 45.156s / day | |
Inclination | 4.2636° |
313.478° | |
100.91° | |
Physical characteristics | |
136.12±2.5
km
[2] 144.13 ± 7.23 km [3] | |
Mass | (1.32 ± 0.10) × 1019 kg [3] |
Mean
density | 8.41 ± 1.43 g/cm3 [3] |
10.283
h (0.4285
d)
[2] 10.12 h [4] | |
0.0465±0.002 | |
DCX: [4] | |
8.28 | |
Medea ( minor planet designation: 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. [5]
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. [4] Lightcurve data has also been recorded by observers at the Antelope Hill Observatory ( H09), 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. [6]