| Discovery[1] | |
|---|---|
| Discovered by | A. Mrkos |
| Discovery site | Klet Obs. |
| Discovery date | 25 September 1979 |
| Designations | |
| (2325) Chernykh | |
Named after | Lyudmila Chernykh Nikolai Chernykh (Russian astronomers)[1] |
| 1979 SP · 1957 UJ 1959 CH · 1971 FR 1974 WD1 · 1974 XN 1979 UG3 | |
| main-belt[1][2] · (outer) Themis[3] | |
| Orbital characteristics[2] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 62.03yr (22,658 d) |
| Aphelion | 3.6909AU |
| Perihelion | 2.5870 AU |
| 3.1389 AU | |
| Eccentricity | 0.1758 |
| 5.56 yr (2,031 d) | |
| 281.91° | |
| 0° 10m 37.92s / day | |
| Inclination | 1.9199° |
| 139.94° | |
| 267.37° | |
| Physical characteristics | |
| 22.789±0.194 km[4] | |
| 0.065±0.012[4] | |
| 11.9[2] | |
2325 Chernykh, provisional designation1979 SP, is a dark Themistianasteroid from the outer regions of theasteroid belt, approximately 23 kilometers (14 miles) in diameter. It was discovered on 25 September 1979, by Czech astronomerAntonín Mrkos at theKlet Observatory in the Czech Republic. The asteroid was named after Russian astronomer coupleLyudmila Chernykh andNikolai Chernykh.[1]
Chernykh is a Themistian asteroid that belongs to theThemis family (602),[3] a very largefamily of carbonaceous asteroids, named after24 Themis.[5] It orbits the Sun in theouter main-belt at a distance of 2.6–3.7 AU once every 5 years and 7 months (2,031 days;semi-major axis of 3.14 AU). Its orbit has aneccentricity of 0.18 and aninclination of 2° with respect to theecliptic.[2] The body'sobservation arc begins with its firstprecovery observation atPalomar Observatory in May 1955.[1]
Although the asteroid'sspectral type is unknown, its albedo indicates acarbonaceous composition, which also agrees withC-type classification for the Themistian asteroids.[5]: 23
According to the survey carried out by theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Chernykh measures 22.789 kilometers in diameter and its surface has analbedo of 0.065.[4] As of 2018, no rotationallightcurve ofChernykh has been obtained fromphotometric observations. The body'srotation period,pole and shape remain unknown.[2]
Thisminor planet was named after the Russian astronomersLyudmila Chernykh (1935–2017) andNikolai Chernykh (1931–2004), prolificdiscoverers of minor planets who lead the extensive astrometric program at the discoveringCrimean Astrophysical Observatory.[1] The official naming citation was published by theMinor Planet Center on 1 June 1981 (M.P.C. 6060).[6]
