(149) Medusa
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Asteroid (149) Medusa |
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| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt |
| Major semi-axis | 2.175 AU |
| eccentricity | 0.065 |
| Perihelion - aphelion | 2.034 AU - 2.316 AU |
| Inclination of the orbit plane | 0.9 ° |
| Length of the ascending node | 159.6 ° |
| Argument of the periapsis | 251 ° |
| Time of passage of the perihelion | November 14, 2010 |
| Sidereal period | 3 a 75 d |
| Mean orbital velocity | 20.20 km / s |
| Physical Properties | |
| Medium diameter | 19.75 km |
| Albedo | 0.2334 |
| Rotation period | 26 h 0 min |
| Absolute brightness | 10.79 likes |
| Spectral class | S. |
| history | |
| Explorer | J. Perrotin |
| Date of discovery | September 21, 1875 |
| Another name | A905 BA, A906 HB |
| 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. | |
(149) Medusa is an asteroid of the main asteroid belt discovered by Henri Joseph Perrotin on September 21, 1875 . The celestial body was named after Medusa , one of the gorgons from Greek mythology , the sight of which made everyone turn to stone.
Medusa moves from 2.034 ( perihelion ) astronomical units to 2.316 astronomical units ( aphelion ) around the sun in 3.21 years . The orbit is inclined 0.938 ° to the ecliptic , the orbit eccentricity is 0.065.
Medusa has a mean diameter of around 20 km. It has a light, silicate-rich surface with an albedo of 0.23. It rotates on its own axis in 26 hours.
See also
Individual evidence
- ^ Lutz D. Schmadel : Dictionary of Minor Planet Names . Springer, Heidelberg 2012, 6th edition, page 26 (English)