(309) Fraternitas
Asteroid (309) Fraternitas |
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Properties of the orbit ( animation ) | |
Orbit type | Middle main belt |
Major semi-axis | 2,664 AU |
eccentricity | 0.116 |
Perihelion - aphelion | 2.355 AU - 2.973 AU |
Inclination of the orbit plane | 3.7 ° |
Length of the ascending node | 356.6 ° |
Argument of the periapsis | 311.2 ° |
Time of passage of the perihelion | December 10, 2009 |
Sidereal period | 4 a 127 d |
Mean orbital velocity | 18.2 km / s |
Physical Properties | |
Medium diameter | 45 km |
Albedo | 0.0595 |
Rotation period | 13 h 12 min |
Absolute brightness | 10.4 mag |
history | |
Explorer | Johann Palisa |
Date of discovery | April 6, 1891 |
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. |
(309) Fraternitas is an asteroid of the main asteroid belt , which was discovered on April 6, 1891 by Johann Palisa at the observatory in Vienna .
Fraternitas moves at a distance of 2.3606 ( perihelion ) to 2.9688 ( aphelion ) astronomical units in 4.35 years around the sun . The orbit is 3.7219 ° inclined to the ecliptic , the orbital eccentricity is 0.1141.
Fraternitas has a diameter of 45 kilometers. It has a dark surface with an albedo of 0.060. It rotates around its own axis in 13 hours and 12 minutes.