(11) Parthenope

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(11) ParthenopeAstronomical symbol of Parthenope
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
Spectral class
(according to Tholen)
Spectral class
(according to SMASSII)
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 .

See also