(291) Alice
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Asteroid (291) Alice |
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| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt |
| Major semi-axis | 2.223 AU |
| eccentricity | 0.092 |
| Perihelion - aphelion | 2.018 AU - 2.428 AU |
| Inclination of the orbit plane | 1.9 ° |
| Length of the ascending node | 161.7 ° |
| Argument of the periapsis | 331.3 ° |
| Time of passage of the perihelion | October 31, 2018 |
| Sidereal period | 3 a 115 d |
| Mean orbital velocity | 19.9 km / s |
| Physical Properties | |
| Medium diameter | 10.456 ± 0.419 km |
| Albedo | 0.425 ± 0.077 |
| Rotation period | 4 h 19 min |
| Absolute brightness | 11.45 mag |
| history | |
| Explorer | Johann Palisa |
| Date of discovery | April 25, 1890 |
| Another name | 1954 UJ 3 |
| 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. | |
(291) Alice is an asteroid of the main asteroid belt , which on 25 April 1890 by Johann Palisa the Observatory of Wien was discovered.
Alice moves around the Sun at a distance of 2.0143 ( perihelion ) to 2.4291 ( aphelion ) astronomical units in 3.31 years . The orbit is 1.8535 ° inclined to the ecliptic , the orbital eccentricity is 0.0934.
Alice has a mean diameter of about 10.5 kilometers. It has a light surface with an albedo of 0.425. It rotates around its own axis in around 4 hours and 19 minutes.