10979 Fristephenson
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| Discovery A | |
|---|---|
| Discoverer | van Houten, van Houten-Groeneveld & Gehrels |
| Discovery date | September 29, 1973 |
| Alternate designations B |
4171 T-2; 4386 T-3 |
| Category | Sulamitis family 1 |
| Orbital elements C | |
|
|
|
| Eccentricity (e) | 0.082 |
| Semi-major axis (a) | 367.611 Gm (2.457 AU) |
| Perihelion (q) | 337.358 Gm (2.255 AU) |
| Aphelion (Q) | 397.864 Gm (2.660 AU) |
| Orbital period (P) | 1406.997 d (3.85 a) |
| Mean orbital speed | 18.97 km/s |
| Inclination (i) | 5.555° |
| Longitude of the ascending node (Ω) |
138.497° |
| Argument of perihelion (ω) |
121.157° |
| Mean anomaly (M) | 171.587° |
| Physical characteristics D | |
| Dimensions | 4? km |
| Mass | 6.7×1013 kg |
| Density | 2? g/cm³ |
| Surface gravity | 0.0011 m/s² |
| Escape velocity | 0.0021 km/s |
| Rotation period | ? d |
| Spectral class | ? |
| Absolute magnitude | 15.1 |
| Albedo (geometric) | 0.10? |
| Mean surface temperature |
~178 K |
10979 Fristephenson is a small main belt asteroid named for F. Richard Stephenson, a British astronomer 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.
