10979 Fristephenson
From Infogalactic: the planetary knowledge core
| Discovery | |
|---|---|
| Discovered by | van Houten, van Houten-Groeneveld & Gehrels |
| Discovery date | September 29, 1973 |
| Designations | |
| 4171 T-2; 4386 T-3 | |
| Sulamitis family 1 | |
| Orbital characteristics | |
| Epoch May 10, 2005 (JD 2453500.5) | |
| Aphelion | 397.864 Gm (2.660 AU) |
| Perihelion | 337.358 Gm (2.255 AU) |
| 367.611 Gm (2.457 AU) | |
| Eccentricity | 0.082 |
| 1406.997 d (3.85 a) | |
|
Average orbital speed
|
18.97 km/s |
| 171.587° | |
| Inclination | 5.555° |
| 138.497° | |
| 121.157° | |
| Physical characteristics | |
| Dimensions | 4? km |
| Mass | 6.7×1013 kg |
|
Mean density
|
2? g/cm³ |
| 0.0011 m/s² | |
| 0.0021 km/s | |
| ? d | |
| Albedo | 0.10? |
| Temperature | ~178 K |
|
Spectral type
|
? |
| 15.1 | |
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10979 Fristephenson is a small main belt asteroid named for F. Richard Stephenson, a British astronomer with important contributions to the History of astronomy and Earth's rotation at the University of Durham.
It was discovered on September 29, 1973, by Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld at Leiden University, analysing photographs made by Tom Gehrels with the 48" Schmidt telescope at Palomar Observatory.[1]
References
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