| Discovery[1] | |
|---|---|
| Discovered by | L. Chernykh |
| Discovery site | Crimean Astrophysical Obs. |
| Discovery date | 11 August 1969 |
| Designations | |
| (1832) Mrkos | |
Named after | Antonín Mrkos(astronomer)[2] |
| 1969 PC · 1937 CJ | |
| main-belt · (outer)[1] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 80.14 yr (29,272 days) |
| Aphelion | 3.5486AU |
| Perihelion | 2.8778 AU |
| 3.2132 AU | |
| Eccentricity | 0.1044 |
| 5.76yr (2,104 days) | |
| 86.782° | |
| 0° 10m 15.96s / day | |
| Inclination | 14.947° |
| 303.42° | |
| 81.647° | |
| Physical characteristics | |
| Dimensions | 27.18±1.23 km[3] 29.35±0.38 km[4] 30.67 km(derived)[5] 30.78±2.4 km[6] |
| 13.64±0.01h[7] | |
| 0.0567(derived)[5] 0.068±0.010[4] 0.0742±0.013[6] 0.097±0.010[3] | |
| C[5] | |
| 11.0[3][6] · 11.20[4] · 11.3[1][5] · 11.55±0.21[8] | |
1832 Mrkos, provisional designation1969 PC, is a carbonaceousasteroid from the outer region of theasteroid belt, approximately 30 kilometers in diameter. It was discovered on 11 August 1969 by Russian astronomerLyudmila Chernykh at theCrimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula.[9] It was named after Czech astronomerAntonín Mrkos.[2]
TheC-type asteroid orbits the Sun in theouter main-belt at a distance of 2.9–3.5 AU once every 5 years and 9 months (2,104 days). Its orbit has aneccentricity of 0.10 and aninclination of 15° with respect to theecliptic.[1]Mrkos was first observed and identified as1937 CJ atYerkes Observatory in 1937, extending the body'sobservation arc by 32 years prior to its official discovery observation.[9]
In October 2004, a rotationallightcurve forMrkos was obtained from photometric observations taken by American astronomerBrian Warner at his Palmer Divide Observatory in Colorado. It gave arotation period of 13.64 hours with a brightness variation of 0.18 inmagnitude (U=3-).[7]
According to the surveys carried out by the Infrared Astronomical SatelliteIRAS, the JapaneseAkari satellite, and NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission,Mrkos measures between 27.18 and 30.78 kilometers in diameter, and its surface has analbedo between 0.068 and 0.097.[3][4][6] TheCollaborative Asteroid Lightcurve Link derives an albedo of 0.0567 and a diameter of 30.67 kilometers with anabsolute magnitude of 11.3.[5]
Thisminor planet was named in honor of Czech astronomerAntonín Mrkos (1918–1996), a prolific discoverer of 273 minor planets and well known for his contributions to cometary astronomy. He was the director of theKleť Observatory in what is now the Czech Republic, initiated the first minor planet survey in his country, was a professor atCharles University in Prague andUniversity of South Bohemia, and a participant of a SovietAntarctic expedition in the late 1950s.[2] The officialnaming citation was published by theMinor Planet Center on 1 June 1975 (M.P.C. 3825).[10]
