astro.wikisort.org - Asteroid
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]
 3D convex shape model of 212 Medea | |
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 6 February 1880 |
| Designations | |
MPC designation | (212) Medea |
| Pronunciation | /mɪˈdiːə/[1] |
Named after | Medea |
Alternative designations | A880 CA, 1930 FW |
Minor planet category | 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) |
Semi-major axis | 3.11575 AU (466.110 Gm) |
| Eccentricity | 0.10478 |
Orbital period (sidereal) | 5.50 yr (2008.8 d) |
Mean anomaly | 28.1280° |
Mean motion | 0° 10m 45.156s / day |
| Inclination | 4.2636° |
Longitude of ascending node | 313.478° |
Argument of perihelion | 100.91° |
| Physical characteristics | |
Mean diameter | 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] |
Synodic rotation period | 10.283 h (0.4285 d)[2] 10.12 h[4] |
Geometric albedo | 0.0465±0.002 |
Spectral type | DCX:[4] |
Absolute magnitude (H) | 8.28 |
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]
References
- Noah Webster (1884) A Practical Dictionary of the English Language
- Yeomans, Donald K., "212 Medea", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.
- Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, vol. 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
- di Martino, M.; et al. (July 1995), "Intermediate size asteroids: Photoelectric photometry of 8 objects.", Astronomy and Astrophysics Supplement, vol. 112, pp. 1–7, Bibcode:1995A&AS..112....1D.
- Schmadel Lutz D. Dictionary of Minor Planet Names (fifth edition), Springer, 2003. ISBN 3-540-00238-3.
- Lightcurve Results
External links
- Lightcurve plot of (212) Medea, Antelope Hills Observatory
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Data File
- 212 Medea at AstDyS-2, Asteroids—Dynamic Site
- 212 Medea at the JPL Small-Body Database
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На других языках
[de] (212) Medea
(212) Medea ist ein Asteroid des Asteroiden-Hauptgürtels, der am 6. Februar 1880 von Johann Palisa entdeckt wurde.- [en] 212 Medea
[es] (212) Medea
(212) Medea es un asteroide perteneciente al cinturón de asteroides descubierto el 6 de febrero de 1880 por Johann Palisa desde el observatorio de Pula, Croacia.[2] Está nombrado por Medea, un personaje de la mitología griega.[3][ru] (212) Медея
(212) Меде́я (греч. Μήδεια) — крупный астероид главного пояса, характеризующийся очень низким альбедо. Его тёмная поверхность отражает лишь 4,65 % падающего на него света, что может свидетельствовать о присутствие в её составе простейших углеродных соединений.Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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