1982 Cline

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1982 Cline
Discovery [1]
Discovered by E. F. Helin
Discovery site Palomar 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 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
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]

    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]

    Contents

    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]

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    References

    1. 1 2 3 4 5 6 7 "JPL Small-Body Database Browser: 1982 Cline (1975 VA)" (2017-05-04 last obs.). Jet Propulsion Laboratory . Retrieved 1 July 2017.
    2. 1 2 3 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. 1 2 3 4 5 6 "LCDB Data for (1982) Cline". Asteroid Lightcurve Database (LCDB). Retrieved 25 October 2016.
    4. 1 2 3 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. 1 2 3 4 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)
    6. 1 2 3 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. 1 2 3 4 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. 1 2 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. 1 2 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. 1 2 "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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