(127) Johanna
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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.