(988) Appeal
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Asteroid (988) Appella |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 3.1476 AU |
| eccentricity | 0.2319 |
| Perihelion - aphelion | 2.4175 AU - 3.8776 AU |
| Inclination of the orbit plane | 1.578 ° |
| Sidereal period | 5,584 a |
| Mean orbital velocity | 16.79 km / s |
| Physical Properties | |
| Medium diameter | approx. 20 km |
| Albedo | 0.097 |
| Rotation period | ? H |
| Absolute brightness | 11.6 mag |
| Spectral class | ? |
| history | |
| Explorer | B. P. Schechowski |
| Date of discovery | November 10, 1922 |
| Another name | 1922 MT, 1951 QJ 1 |
| 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. | |
(988) Appella is an asteroid of the main belt that was discovered on November 10, 1922 by the Russian astronomer Beniamin Pavlovich Schechowski in Algiers .
The asteroid is named after the French mathematician and astronomer Paul Émile Appell .