(127) Johanna
Asteroid (127) Johanna |
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Properties of the orbit ( animation ) | |
Orbit type | Main belt asteroid |
Major semi-axis | 2.755 AU |
eccentricity | 0.0648 |
Perihelion - aphelion | 2.576 AU - 2.933 AU |
Inclination of the orbit plane | 8.24 ° |
Length of the ascending node | 31.2 ° |
Argument of the periapsis | 94.7 ° |
Time of passage of the perihelion | February 22, 2011 |
Sidereal period | 4 a 209 d |
Mean orbital velocity | 17.9 km / s |
Physical Properties | |
Medium diameter | 122 km |
Rotation period | 12.8 h |
Absolute brightness | 8.3 mag |
Spectral class | Ch (SMASS classification) |
history | |
Explorer | Prosper Mathieu Henry |
Date of discovery | November 5, 1872 |
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. |
(127) Johanna is an asteroid of the main asteroid belt discovered by Prosper Mathieu Henry on November 5, 1872 .
The celestial body was named in memory of Johanna von Orleans .
Johanna moves between 2.6 ( perihelion ) astronomical units to 2.9 astronomical units ( aphelion ) in 4.6 years around the sun . The orbit is 8.2 ° inclined to the ecliptic , the orbital eccentricity is 0.06.
Johanna has a diameter of around 120 km. It rotates on its own axis in just under 13 hours.