(11) Parthenope
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Asteroid (11) Parthenope 
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| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt |
| Major semi-axis | 2,453 AU |
| eccentricity | 0.099 |
| Perihelion - aphelion | 2.209 AU - 2.697 AU |
| Inclination of the orbit plane | 4.6 ° |
| Length of the ascending node | 125.6 ° |
| Argument of the periapsis | 194.9 ° |
| Time of passage of the perihelion | August 25, 2008 |
| Sidereal period of rotation | 3 a 306 d |
| Mean orbital velocity | 18.98 km / s |
| Physical Properties | |
| Medium diameter | 162 km |
| Albedo | 0.1803 |
| Rotation period | 13 h 44 min |
| Absolute brightness | 6.6 likes |
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Spectral class (according to Tholen) |
S. |
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Spectral class (according to SMASSII) |
Sk |
| history | |
| Explorer | Gasparis |
| Date of discovery | May 11, 1850 |
| 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. | |
(11) Parthenope is an asteroid of the main asteroid belt discovered by Annibale de Gasparis on May 11, 1850 as the eleventh asteroid.
The celestial body was named after Parthenope , one of the sirens from Greek mythology .
Parthenope moves at a distance of 2.2103 ( perihelion ) to 2.6949 ( aphelion ) astronomical units , in 3.8411 years around the sun . The orbit is inclined 4.6223 ° to the ecliptic , the orbital eccentricity is 0.1.
Parthenope has a diameter of 162 kilometers. It has a relatively light, silicate surface with an albedo of 0.18. During opposition , Parthenope reaches a brightness of 8.9 mag . This makes it one of the brightest asteroids in the night sky. To find them, however, you need a telescope or powerful prism binoculars .