307 Nike
Main-belt asteroid
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307 Nike is a sizeable asteroid of the asteroid belt. It was discovered by the French astronomer Auguste Charlois on 5 March 1891 while working at the Nice Observatory. Charlois named it after the Greek goddess of victory, as well as the Greek name for the city where it was discovered.[4]
Orbital diagram | |
| Discovery | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery site | Nice |
| Discovery date | 5 March 1891 |
| Designations | |
| (307) Nike | |
| Pronunciation | /ËnaɪkiË/[1] |
Named after | Nike |
| A891 EB; 1957 LM | |
| Main belt | |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 125.12 yr (45699 d) |
| Aphelion | 3.3226 AU (497.05 Gm) |
| Perihelion | 2.4899 AU (372.48 Gm) |
| 2.9063 AU (434.78 Gm) | |
| Eccentricity | 0.14327 |
| 4.95 yr (1809.7 d) | |
| 170.550° | |
| 0° 11m 56.148s / day | |
| Inclination | 6.1260° |
| 100.966° | |
| 324.764° | |
| Physical characteristics | |
| Dimensions | 54.96±3.3 km |
| 11.857 ± 0.001 h (0.494042 ± 4.2Ã10â5 d)[2] 7.902 ± 0.005 h[3] | |
| 0.0524±0.007 | |
| C | |
| 10.12 | |
This object is orbiting the Sun at a distance of 2.91 AU with an eccentricity of 0.14 with an orbital period of 4.95 years. The orbital plane is inclined at an angle of 6.13° relative to the plane of the ecliptic. It is classified as a carbon-rich C-type asteroid. Infrared measurements yield a diameter of 55 km.[2]
Measurement of the light curve of this asteroid in 2000 indicates a rotation period of 7.902 ± 0.005 hours.[3] A 2016 study revised the rotation period to 11.857±0.001 hours with a brightness variation of 0.20±0.02 in magnitude.[5]
On 2 December 1972, Pioneer 10 made one of its nearest passages of an asteroid when it passed 307 Nike at a distance of about 8.8 million kilometers (0.059 AU) during the spacecraft's pioneering trip through the asteroid belt. No data was collected.[6]
