(291) Alice
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.