| Discovery[1] | |
|---|---|
| Discovered by | S. Belyavskyj |
| Discovery site | Simeiz Obs. |
| Discovery date | 26 January 1925 |
| Designations | |
| (1074) Beljawskya | |
Named after | Sergey Belyavsky (discoverer himself)[2] |
| 1925 BE · 1949 KC1 A912 VN · A914 BB A917 QB · A923 TA | |
| main-belt · Themis[3] | |
| Orbital characteristics[1] | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 91.32 yr (33,353 days) |
| Aphelion | 3.7138AU |
| Perihelion | 2.5863 AU |
| 3.1501 AU | |
| Eccentricity | 0.1790 |
| 5.59yr (2,042 days) | |
| 196.05° | |
| 0° 10m 34.68s / day | |
| Inclination | 0.8006° |
| 38.132° | |
| 22.886° | |
| Physical characteristics | |
| Dimensions | 39.91±11.13 km[4] 47.70 km(derived)[3] 47.82±2.2 km(IRAS:11)[5] 49.189±0.666 km[6] 52.28±0.96 km[7] 54.368±0.813 km[8] |
| 6.284±0.002h[9] 6.285±0.0035 h[10] | |
| 0.0598±0.0111[8] 0.0646(derived)[3] 0.066±0.003[7] 0.073±0.008[6] 0.0772±0.007(IRAS:11)[5] 0.08±0.03[4] | |
| S(assumed)[3] | |
| 10.0[5][7][8] · 10.046±0.004(R)[10] · 10.10[4] · 10.2[1][3] · 10.21±0.15[11] | |
1074 Beljawskya, provisional designation1925 BE, is a Themistianasteroid from the outer region of theasteroid belt, approximately 48 kilometers in diameter.
It was discovered on 26 January 1925, by Soviet–Russian astronomerSergey Belyavsky atSimeiz Observatory on the Crimean peninsula.[12] It was named in honor of its discoverer.[2]
Beljawskya is a member of theThemis family, a dynamical family ofouter-belt asteroids with nearly coplanarecliptical orbits.[3] It orbits the Sun at a distance of 2.6–3.7 AU once every 5 years and 7 months (2,042 days). Its orbit has aneccentricity of 0.18 and aninclination of 1° with respect to the ecliptic.[1]
It was first identified asA912 VN at Winchester Observatory (799) in 1912. The body'sobservation arc begins with its identification asA923 TA at Simeiz in 1923, almost two years prior to its official discovery observation.[12]
In October 2007, a rotationallightcurve ofBeljawskya was obtained by French amateur astronomerPierre Antonini. It gave a well-definedrotation period of 6.284 hours with a brightness variation of 0.37magnitude (U=3).[9] Photometric observations in the R-band at the U.S.Palomar Transient Factory in September 2013, gave a concurring period of 6.285 hours with an amplitude of 0.32 magnitude (U=2).[10]
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,Beljawskya measures between 39.91 and 52.28 kilometers in diameter, and its surface has analbedo of 0.066 and 0.08 (without preliminary results).[4][5][6][7]
TheCollaborative Asteroid Lightcurve Link derives an albedo of 0.0646 and a diameter of 47.70 kilometers using anabsolute magnitude of 10.2.[3] CALL also classifies the dark Themistian asteroid as aS-type rather than aC-type body.[3]
Proposed by staff members of the discovering Simeis Observatory, thisminor planet was named in honor of its discovererSergey Ivanovich Belyavsky (1883–1953). He also discovered the hyperbolic cometC/1911 S3 that was visible to the naked eye. Between 1912 and 1927, he has discovered36 numbered minor planets.[2] Naming citation was first mentioned inThe Names of the Minor Planets byPaul Herget in 1955 (H 102).[2]
