1849 Kresák
| Discovery | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 14 January 1942 |
| Designations | |
| MPC designation | (1849) Kresák |
|
Named after
|
Ľubor Kresák (astronomer) |
| 1942 AB · 1948 EO 1951 WC2 |
|
| main-belt · (outer) | |
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 74.82 yr (27,329 days) |
| Aphelion | 3.1041 AU |
| Perihelion | 3.0007 AU |
| 3.0524 AU | |
| Eccentricity | 0.0169 |
| 5.33 yr (1,948 days) | |
| 315.17° | |
| 0° 11m 5.28s / day | |
| Inclination | 10.764° |
| 50.373° | |
| 144.25° | |
| Physical characteristics | |
| Dimensions |
21.776±2.427 km 26.14 km (calculated) |
| 19.1008±0.0153 h | |
| 0.057 (assumed) 0.114±0.032 |
|
| C | |
| 11.191±0.002 (R) · 11.28 · 11.5 · 11.61±0.32 · 11.64 | |
1849 Kresák, provisional designation 1942 AB, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 24 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory in the middle of World War II on 14 January 1942.
Kresák is a C-type asteroid. It orbits the Sun at a distance of 3.0–3.1 AU once every 5 years and 4 months (1,948 days). Its orbit has an eccentricity of 0.02 and an inclination of 11° with respect to the ecliptic. The Kresák's observation arc begins 6 days after its official discovery observation.
In January 2012, a rotational light-curve was obtained from photometric observations at the Palomar Transient Factory in California. In the R-band, it gave a rotation period of 19.10 hours with a brightness variation of 0.19 magnitude (U=2).
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Kresák measures 21.7 kilometers in diameter, and its surface has an albedo of 0.114, while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 26.1 kilometers based on an absolute magnitude of 11.64.
...
Wikipedia