(1689) Floris-Jan
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Asteroid (1689) Floris-Jan |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 2.4511 AU |
| eccentricity | 0.2049 |
| Perihelion - aphelion | 1.9488 AU - 2.9534 AU |
| Inclination of the orbit plane | 6.378 ° |
| Sidereal period | 3,838 a |
| Mean orbital velocity | 19.02 km / s |
| Physical Properties | |
| Medium diameter | 14 km |
| Albedo | ? |
| Rotation period | 145 h |
| Absolute brightness | 11,513 likes |
| Spectral class | ? |
| history | |
| Explorer | H. van Gent |
| Date of discovery | September 16, 1930 |
| Another name | 1930 SO, 1926 PG, 1928 DN |
| 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. | |
(1689) Floris-Jan is an asteroid of the main belt that was discovered on September 16, 1930 by the Dutch astronomer Hendrik van Gent in Johannesburg .
The asteroid is named after Floris-Jan van der Meulen , the 5000th visitor to an astronomical exhibition.