| Discovery[1] | |
|---|---|
| Discovered by | L. Chernykh |
| Discovery site | Crimean Astrophysical Obs. |
| Discovery date | 8 October 1969 |
| Designations | |
| (1856) Růžena | |
Named after | Růžena Petrovicova (Kleť Observatory)[2] |
| 1969 TW1 · 1941 FP 1971 DL1 | |
| main-belt · (inner) | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 47.47 yr (17,339 days) |
| Aphelion | 2.4146AU |
| Perihelion | 2.0586 AU |
| 2.2366 AU | |
| Eccentricity | 0.0796 |
| 3.34yr (1,222 days) | |
| 251.86° | |
| 0° 17m 40.92s / day | |
| Inclination | 4.7421° |
| 185.88° | |
| 56.000° | |
| Physical characteristics | |
| Dimensions | 6.620±0.252 km[3] |
| 0.335±0.033[3] | |
| SMASS =S[1] | |
| 12.8[1] | |
1856 Růžena, provisional designation1969 TW1, is a stonyasteroid from the inner regions of theasteroid belt, approximately 6.6 kilometers in diameter. It was discovered on 8 October 1969, by Russian astronomerLyudmila Chernykh atCrimean Astrophysical Observatory in Nauchny, on theCrimean peninsula.[4] The asteroid was named after Růžena Petrovicova, staff member atKleť Observatory.[2]
Růžena orbits the Sun in theinner main-belt at a distance of 2.1–2.4 AU once every 3 years and 4 months (1,222 days). Its orbit has aneccentricity of 0.08 and aninclination of 5° with respect to theecliptic.[1] The asteroid was first identified as1941 FP at the FinnishIso-Heikkilä Observatory. The body'sobservation arc, however, starts with its official discovery observation at Nauchnyj in 1969.[4]
Růžena is brightS-type asteroid in theSMASS classification.[1]
According to the survey carried out by NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission,Růžena measures 6.62 kilometers in diameter and its surface has analbedo of 0.335.[3] As of 2016, the body'srotation period and shape remain unknown.[1][5]
This asteroid was named in honor of Růžena Petrovicova, observer ofcomets andminor planets and staff member of theKleť Observatory, located in what is now the Czech Republic.[2] The officialnaming citation was published by theMinor Planet Center on 1 June 1975 (M.P.C. 3825).[6]
