|Properties of the orbit ( animation )|
|Orbit type||Inner main belt|
|Major semi-axis||2,453 AU|
|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|
|Medium diameter||162 km|
|Rotation period||13 h 44 min|
|Absolute brightness||6.6 likes|
(according to Tholen)
(according to SMASSII)
|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 .