(1389) Onnie
Asteroid (1389) Onnie |
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Properties of the orbit ( animation ) | |
Orbit type | Main belt asteroid |
Asteroid family | Koronis family |
Major semi-axis | 2.8677 AU |
eccentricity | 0.0124 |
Perihelion - aphelion | 2.8322 AU - 2.9032 AU |
Inclination of the orbit plane | 2.043 ° |
Sidereal period | 4.856 a |
Mean orbital velocity | 17.59 km / s |
Physical Properties | |
Medium diameter | 28 km |
Rotation period | 22.50 h |
Absolute brightness | 11,364 likes |
history | |
Explorer | H. van Gent |
Date of discovery | September 28, 1935 |
Another name | 1935 SS 1 , 1949 QV 1 , 1955 XB 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. |
(1389) Onnie is an asteroid of the main belt that was discovered on September 28, 1935 by the Dutch astronomer Hendrik van Gent in Johannesburg .
The asteroid is named after A. Kruyt , a daughter-in-law of G. Pels , a computational assistant at the Leiden observatory.