1791 Patsayev
| Discovery | |
|---|---|
| Discovered by | T. Smirnova |
| Discovery site | Crimean Astrophysical Obs. |
| Discovery date | 4 September 1967 |
| Designations | |
| MPC designation | 1791 Patsayev |
|
Named after
|
Viktor Patsayev (cosmonaut) |
| 1967 RE · 1931 TW3 1943 GS · 1943 GZ 1948 JO · 1948 KA 1957 JG · 1957 KS 1958 RC |
|
| main-belt · (middle) | |
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 84.67 yr (30,927 days) |
| Aphelion | 3.1343 AU |
| Perihelion | 2.3602 AU |
| 2.7473 AU | |
| Eccentricity | 0.1409 |
| 4.55 yr (1,663 days) | |
| 5.7374° | |
| 0° 12m 59.04s / day | |
| Inclination | 5.3689° |
| 198.89° | |
| 74.385° | |
| Physical characteristics | |
| Dimensions | 25.69 km (derived) 29.394±0.114 km 29.446±0.287 km 31.50±0.37 km |
| 19.809±0.013 h | |
|
0.030±0.004 0.034±0.006 0.0390±0.0076 0.0465 (derived) |
|
| C | |
| 11.8 · 11.9 | |
1791 Patsayev, provisional designation 1967 RE, is a presumably carbonaceous asteroid from the middle region of the asteroid belt, approximately 26 kilometers in diameter. It was discovered on 4 September 1967, by Russian astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula.
The dark C-type asteroid orbits the Sun at a distance of 2.4–3.1 AU once every 4 years and 7 months (1,663 days). Its orbit has an eccentricity of 0.14 and an inclination of 5° with respect to the ecliptic.Patsayev was first identified as 1931 TW3 at Lowell Observatory in 1931, extending the body's observation arc by 36 years prior to its official discovery observation.
In April 2016, a rotational light-curve of Patsayev was obtained from photometric observations taken by Sydney Black at the Oakley Southern Sky Observatory in Coonabarabran, Australia. It gave a well-defined rotation period of 19.809 hours with a brightness variation of 0.28 in magnitude (U=3).
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Patsayev measures between 29.39 and 31.50 kilometers in diameter, and its surface has a high albedo between 0.030 and 0.039. The Collaborative Asteroid Lightcurve Link (CALL) disagrees with the results found by WISE. CALL derives a much lower carbonaceous albedo of 0.046, and calculates a diameter of 25.69 kilometers based on an absolute magnitude of 11.9.
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