| Discovery[1] | |
|---|---|
| Discovered by | M. Akiyama T. Furuta |
| Discovery site | Mishima Obs. (886) |
| Discovery date | 18 October 1990 |
| Designations | |
| (5333) Kanaya | |
Named after | Kanaya, Shizuoka (Japanese city)[2] |
| 1990 UH · 1974 HC2 1979 SJ2 · 1981 EJ49 1985 JE2 | |
| main-belt · (inner)[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 62.62 yr (22,871 days) |
| Aphelion | 2.7398AU |
| Perihelion | 1.9515 AU |
| 2.3456 AU | |
| Eccentricity | 0.1680 |
| 3.59yr (1,312 days) | |
| 61.888° | |
| 0° 16m 27.84s / day | |
| Inclination | 10.973° |
| 208.40° | |
| 309.01° | |
| Physical characteristics | |
| Dimensions | 13.35 km(calculated)[3] 13.587±0.041 km[4] 13.918±0.032[5] 14.21±0.41 km[6] |
| 3.683±0.001h[7] 3.8022±0.0008 h[8] 3.80224±0.00006 h[a] 3.8024±0.0002 h[9] | |
| 0.029±0.004[5] 0.0407±0.0012[4] 0.051±0.003[6] 0.057(assumed)[3] | |
| SMASS = Ch[1] · C[3][10] | |
| 13.1[1][3][4][6] · 12.99±0.33[10] | |
5333 Kanaya, provisional designation1990 UH, is a carbonaceousasteroid from the inner regions of theasteroid belt, approximately 14 kilometers in diameter.
The asteroid was discovered on 18 October 1990, by Japanese astronomersMakio Akiyama andToshimasa Furuta at Mishima Observatory (886) in Susono, Japan, and named for the Japanese city ofKanaya.[2][11]
Kanaya orbits the Sun in theinner main-belt at a distance of 2.0–2.7 AU once every 3 years and 7 months (1,312 days). Its orbit has aneccentricity of 0.17 and aninclination of 11° with respect to theecliptic.[1]
A firstprecovery was taken at theGoethe Link Observatory in 1954. Itobservation arc begins at the ChileanCerro El Roble Station in 1974, when it was identified as1974 HC2, 16 years prior to its official discovery observation at Susono.[11]
In theSMASS classification,Kanaya is a Ch-type asteroid, a hydrated sub-type of the carbonaceousC-type asteroids.[1]
According to the space-based surveys carried out by the JapaneseAkari satellite and NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission,Kanaya measures 14.2 and 13.6 kilometers in diameter, and its surface has analbedo of 0.029 and 0.051, respectively.[6][4]
TheCollaborative Asteroid Lightcurve Link assumes a standard albedo forcarbonaceous asteroids of 0.057 and calculates a diameter of 13.4 kilometers with anabsolute magnitude of 13.1.[3]
Several rotationallightcurves ofKanaya have been obtained from photometric observations. In December 2005, a first lightcurve by astronomer David Higgins at Hunters Hill Observatory (E14), Australia, gave arotation period of3.8022 hours with a brightness variation of 0.22magnitude (U=3).[8]
In October 2010, Czech astronomerPetr Pravec obtained another well-defined period of3.80224 hours with an amplitude of 0.16 magnitude (U=3).[a] Other observations rendered similar periods (U=2+/3-).[7][9]
Thisminor planet was named for the Japanese town ofKanaya (金谷町 Kanaya-chō) in Haibara District of the Shizuoka Prefecture. It is the native town of the first discoverer, Makio Akiyama, and also a station on the ancient "Tokai-do" road. The Malinohara plateau south of Kanaya is well known for its production of green tea.[2] The official naming citation was published by theMinor Planet Center on 6 February 1993 (M.P.C. 21610).[12]
