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1982 Cline
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| 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 | 2.8858 AU |
| Perihelion | 1.7351 AU |
| 2.3104 AU | |
| Eccentricity | 0.2490 |
| 3.51 yr (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±0.01 h[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 designation 1975 VA, is a stony asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 4 November 1975, by American astronomer Eleanor Helin at Palomar Observatory in California, and named after Edwin Lee Cline, inventor and friend of the discoverer.[2][10]
Classification and orbit
[edit]Cline is a stony S-type asteroid that orbits the Sun in the inner main-belt at a distance of 1.7–2.9 AU once every 3 years and 6 months (1,283 days). Its orbit has an eccentricity of 0.25 and an inclination of 7° with respect to the ecliptic.[1] As a main-belt asteroid with a perihelion of less than 1.74 AU, it is not far from being a Mars-crosser (1.67 AU).[1] The first precovery was taken at Johannesburg Observatory (Hartbeespoort, 076) in 1957, extending the asteroid's observation arc by 18 years prior to its discovery.[10]
Physical characteristics
[edit]The body's first and only rotational lightcurve of Cline was obtained by American astronomer James W. Birnsfield at the Via Capote Observatory (G69), California, in November 2011. It gave a well-defined rotation period of 5.78±0.01 hours with a brightness variation of 0.36 in magnitude (U=3).[8]
According to the survey carried out by the Japanese Akari satellite and the latest data from the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Cline measures 7.2 and 8.1 kilometers in diameter and its surface has an albedo 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] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 8.18 kilometers with an absolute magnitude of 12.8.[3]
Naming
[edit]This minor 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 official naming citation was published by the Minor Planet Center on 18 April 1977 (M.P.C. 4158).[11]
References
[edit]- ^ a b c d e f g "JPL Small-Body Database Browser: 1982 Cline (1975 VA)" (2017-05-04 last obs.). Jet Propulsion Laboratory. Retrieved 1 July 2017.
- ^ a b c Schmadel, Lutz D. (2007). "(1982) Cline". Dictionary of Minor Planet Names – (1982) Cline. Springer Berlin Heidelberg. p. 160. doi:10.1007/978-3-540-29925-7_1983. ISBN 978-3-540-00238-3.
- ^ a b c d e f "LCDB Data for (1982) Cline". Asteroid Lightcurve Database (LCDB). Retrieved 25 October 2016.
- ^ a b c d Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 25 October 2016.
- ^ a b c d Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153)
- ^ a b c Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 14 September 2016.
- ^ a b c d Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.
- ^ a b Brinsfield, James W. (April 2011). "Asteroid Lightcurve Analysis at the Via Capote Observatory: 4th Quarter 2010". The Minor Planet Bulletin. 38 (2): 73–74. Bibcode:2011MPBu...38...73B. ISSN 1052-8091. Retrieved 25 October 2016.
- ^ a b Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 25 October 2016.
- ^ a b "1982 Cline (1975 VA)". Minor Planet Center. Retrieved 25 October 2016.
- ^ Schmadel, Lutz D. "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN 978-3-642-01964-7.
External links
[edit]- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 1982 Cline at NeoDyS-2, Near Earth Objects—Dynamic Site
- 1982 Cline at the JPL Small-Body Database
