10979 Fristephenson
| Discovery | |
|---|---|
| Discovered by | van Houten, van Houten-Groeneveld & Gehrels |
| Discovery date | 29 September 1973 |
| Designations | |
| 4171 T-2; 4386 T-3 | |
| Sulamitis family 1 | |
| Orbital characteristics | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 15422 days (42.22 yr) |
| Aphelion | 2.65889 AU (397.764 Gm) |
| Perihelion | 2.25686 AU (337.621 Gm) |
| 2.45788 AU (367.694 Gm) | |
| Eccentricity | 0.081784 |
| 3.85 yr (1407.5 d) | |
|
Average orbital speed
|
18.97 km/s |
| 88.0891° | |
| 0° 15m 20.804s / day | |
| Inclination | 5.56160° |
| 138.326° | |
| 122.372° | |
| Earth MOID | 1.24578 AU (186.366 Gm) |
| Jupiter MOID | 2.38722 AU (357.123 Gm) |
| Jupiter Tisserand parameter | 3.481 |
| Physical characteristics | |
| Dimensions | 4? km |
| Mass | 6.7×1013 kg |
|
Mean density
|
2? g/cm³ |
|
Equatorial surface gravity
|
0.0011 m/s² |
|
Equatorial escape velocity
|
0.0021 km/s |
| ? d | |
| 0.10? | |
| Temperature | ~178 K |
| ? | |
| 15.1 | |
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.
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