(391) Ingeborg
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Asteroid (391) Ingeborg  | 
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| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt | 
| Major semi-axis | 2.32 AU | 
| eccentricity | 0.306 | 
| Perihelion - aphelion | 1.61 AU - 3.03 AU | 
| Inclination of the orbit plane | 23.2 ° | 
| Length of the ascending node | 213 ° | 
| Argument of the periapsis | 146.7 ° | 
| Time of passage of the perihelion | April 8, 2011 | 
| Sidereal period | 3 a 195 d | 
| Mean orbital velocity | 19.1 km / s | 
| Physical Properties | |
| Medium diameter | 20 to 50 km | 
| Rotation period | 26 h 23 min | 
| Absolute brightness | 10.1 mag | 
| Spectral class | S. | 
| history | |
| Explorer | Max Wolf | 
| Date of discovery | November 1, 1894 | 
| Another name | 1894 BE | 
| 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. | |
(391) Ingeborg is an asteroid of the main asteroid belt that was discovered by Max Wolf in Heidelberg on November 1, 1894 .