| Discovery[1] | |
|---|---|
| Discovered by | E. F. Helin |
| Discovery site | Palomar Obs. |
| Discovery date | 4 November 1975 |
| Designations | |
| (1982) Cline | |
Named after | Edwin Cline(inventor)[2] |
| 1975 VA · 1936 OO 1957 LN · 1961 XC 1961 XK · 1973 AS | |
| main-belt · (inner)[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 59.91 yr (21,882 days) |
| Aphelion | 2.8858AU |
| Perihelion | 1.7351 AU |
| 2.3104 AU | |
| Eccentricity | 0.2490 |
| 3.51yr (1,283 days) | |
| 18.924° | |
| 0° 16m 50.16s / day | |
| Inclination | 6.8421° |
| 42.366° | |
| 279.57° | |
| Physical characteristics | |
| Dimensions | 6.03±0.17 km[4] 7.21±0.50 km[5] 8.100±0.030 km[1][6] 8.18 km(calculated)[3] 8.401±0.064 km[7] |
| 5.78±0.01h[8] | |
| 0.194±0.028[1][6] 0.20(assumed)[3] 0.2364±0.0443[7] 0.340±0.050[5] 0.369±0.063[4] | |
| S[3][9] | |
| 12.5[5][7] · 12.56±0.39[9] · 12.8[3][4] · 12.9[1] | |
1982 Cline, provisional designation1975 VA, is a stonyasteroid from the inner regions of theasteroid belt, approximately 8 kilometers in diameter. It was discovered on 4 November 1975, by American astronomerEleanor Helin atPalomar Observatory in California, and named after Edwin Lee Cline, inventor and friend of the discoverer.[2][10]
Cline is a stonyS-type asteroid that orbits the Sun in theinner main-belt at a distance of 1.7–2.9 AU once every 3 years and 6 months (1,283 days). Its orbit has aneccentricity of 0.25 and aninclination of 7° with respect to theecliptic.[1] As a main-belt asteroid with aperihelion of less than 1.74 AU, it is not far from being aMars-crosser (1.67 AU).[1] The firstprecovery was taken atJohannesburg Observatory (Hartbeespoort,076) in 1957, extending the asteroid'sobservation arc by 18 years prior to its discovery.[10]
The body's first and only rotationallightcurve ofCline was obtained by American astronomer James W. Birnsfield at the Via Capote Observatory (G69), California, in November 2011. It gave a well-definedrotation period of5.78±0.01 hours with a brightness variation of 0.36 inmagnitude (U=3).[8]
According to the survey carried out by the JapaneseAkari satellite and the latest data from theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Cline measures 7.2 and 8.1 kilometers in diameter and its surface has analbedo of 0.194 of 0.34, respectively.[5][6] Previous results by WISE/NEOWISE also gave a diameter of 6.03 and 8.4 kilometers.[4][7] TheCollaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 8.18 kilometers with anabsolute magnitude of 12.8.[3]
Thisminor planet was named in memory of Edwin Lee Cline, a friend of the discoverer and a known inventor in the automotive field who "looked to space as the new frontier".[2] The officialnaming citation was published by theMinor Planet Center on 18 April 1977 (M.P.C. 4158).[11]
