1982 Cline

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]

1982 Cline
Discovery [1]
Discovered byE. F. Helin
Discovery sitePalomar Obs.
Discovery date4 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 arc59.91 yr (21,882 days)
Aphelion2.8858 AU
Perihelion1.7351 AU
2.3104 AU
Eccentricity0.2490
3.51 yr (1,283 days)
18.924°
0° 16m 50.16s / day
Inclination6.8421°
42.366°
279.57°
Physical characteristics
Dimensions6.03±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]

    Classification and orbit

    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

    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

    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
    1. "JPL Small-Body Database Browser: 1982 Cline (1975 VA)" (2017-05-04 last obs.). Jet Propulsion Laboratory. Retrieved 1 July 2017.
    2. 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.
    3. "LCDB Data for (1982) Cline". Asteroid Lightcurve Database (LCDB). Retrieved 25 October 2016.
    4. 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.
    5. 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. Retrieved 17 October 2019. (online, AcuA catalog p. 153)
    6. 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.
    7. 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.
    8. 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.
    9. 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.
    10. "1982 Cline (1975 VA)". Minor Planet Center. Retrieved 25 October 2016.
    11. 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.

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