| Discovery[1] | |
|---|---|
| Discovered by | S. Belyavskyj |
| Discovery site | Simeiz Obs. |
| Discovery date | 11 October 1925 |
| Designations | |
| (1062) Ljuba | |
Named after | Ljuba Berlin[2] (Soviet parachutist) |
| 1925 TD · 1943 EH1 1976 MM · A904 TB A914 SD · A917 GB A924 ND | |
| main-belt[1][3] · (outer)[4] background[5] | |
| Orbital characteristics[3] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 91.55yr (33,437 d) |
| Aphelion | 3.2145AU |
| Perihelion | 2.7948 AU |
| 3.0046 AU | |
| Eccentricity | 0.0698 |
| 5.21 yr (1,902 d) | |
| 218.82° | |
| 0° 11m 21.12s / day | |
| Inclination | 5.5963° |
| 341.40° | |
| 101.41° | |
| Physical characteristics | |
| 44±4 km[6] 51.017±0.887 km[7] 55.10±2.0 km[8] 55.75±0.96 km[9] 57.16±13.41 km[10] 58.031±1.315 km[11] 60.80±14.17 km[12] | |
| 33.8±0.2 h[13] 36 h(poor)[14] 41.5±0.2 h[15] 42 h(poor)[15] | |
| 0.060±0.007[11] 0.06±0.06[12] 0.0668±0.005[8] 0.067±0.003[9] 0.0779±0.0156[7] 0.12±0.06[10] | |
| C(Tholen)[4] B–V = 0.720[3] | |
| 9.85[3][4][7][8][9][10][14] 10.09[12] | |
1062 Ljuba, provisional designation1925 TD, is a carbonaceous backgroundasteroid from the outer regions of theasteroid belt, approximately 58 kilometers (36 miles) in diameter. The asteroid was discovered on 11 October 1925, by Soviet–Russian astronomerSergey Belyavsky at theSimeiz Observatory on the Crimean peninsula.[1] It was named after female paratrooper Ljuba Berlin, who died at an early age.[2] TheC-type asteroid has a longer-than averagerotation period of 33.8 hours.[4]
Ljuba is a non-family asteroid from the main belt'sbackground population.[5] It orbits the Sun in theouter asteroid belt at a distance of 2.8–3.2 AU once every 5 years and 3 months (1,902 days;semi-major axis of 3 AU). Its orbit has aneccentricity of 0.07 and aninclination of 6° with respect to theecliptic.[3]
The asteroid was first observed asA904 TB atHeidelberg Observatory in October 1904. The body'sobservation arc also begins at Heidelberg in February 1929, or 16 months after its official discovery observation at Simeiz.[1]
In theTholen classification,Ljuba is a carbonaceousC-type asteroid.[4]
In October 2003, a rotationallightcurve ofLjuba was obtained from photometric observations by American amateur astronomerWalter Cooney at this Blackberry Observatory (929) in Port Allen, Louisiana. Lightcurve analysis gave a well-definedrotation period of 33.8 hours with a brightness variation of 0.17magnitude (U=3).[13] Lower-rated lightcurves byRichard Binzel,René Roy andLaurent Bernasconi gave a somewhat longer period of 36, 41.5 and 42 hours, respectively (U=1/2/1).[14][15] While not being aslow rotator,Ljuba's period is significantly longer than that for most other asteroids, which rotate every 2–20 hours once around their axis.
According to the surveys carried out by the Infrared Astronomical SatelliteIRAS, the JapaneseAkari satellite and theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Ljuba measures between 51.017 and 60.80 kilometers in diameter and its surface has analbedo between 0.060 and 0.12.[7][8][9][10][11][12]
TheCollaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0668 and a diameter of 55.10 kilometers based on anabsolute magnitude of 9.85.[4]
Thisminor planet was named after Soviet parachutist Ljuba Berlin (1915–1936). The asteroids(1084) and(1086) were also named after Soviet female paratroopers, namely, Tamara Ivanova (1912–1936) and Nata Babushkina (1915–1936), respectively.[2]
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