2985 Shakespeare

2985 Shakespeare (prov. designation: 1983 TV1) is a stony Koronian asteroid from the outer region of the asteroid belt. It was discovered on 12 October 1983, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station near Flagstaff, Arizona, and later named after William Shakespeare.[2][9] The presumed S-type asteroid has a rotation period of 6.1 hours and measures approximately 10 kilometers (6.2 miles) in diameter.

2985 Shakespeare
Shakespeare modeled from its lightcurve
Discovery [1]
Discovered byE. Bowell
Discovery siteAnderson Mesa Stn.
Discovery date12 October 1983
Designations
(2985) Shakespeare
Named after
William Shakespeare
(poet & playwright)[2]
1983 TV1 · 1962 JJ
1976 GV · 1978 RY4
1978 TM3 · 1980 BT3
main-belt · Koronis [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc54.68 yr (19,971 days)
Aphelion2.9783 AU
Perihelion2.7184 AU
2.8483 AU
Eccentricity0.0456
4.81 yr (1,756 days)
87.549°
0° 12m 18s / day
Inclination2.6496°
34.228°
277.66°
Physical characteristics
Mean diameter
10.31 km (calculated)[3]
10.472±0.101 km[4][5]
6.0567±0.0020 h[6]
6.06±0.02 h[7]
6.080±0.040 h[8]
0.24 (assumed)[3]
0.255±0.034[4][5]
S [3]
11.918±0.003 (R)[6] · 11.930±0.240 (R)[8] · 12.0[4] · 12.1[1][3]

    Classification and orbit

    The S-type asteroid is a member of the Koronis family, a group consisting of about 200 known bodies. It orbits the Sun in the outer main-belt at a distance of 2.7–3.0 AU once every 4 years and 10 months (1,756 days). Its orbit has an eccentricity of 0.05 and an inclination of 3° with respect to the ecliptic.[1] It was first identified as 1962 JJ at Goethe Link Observatory in 1962. The body's observation arc begins with its identification 1976 GV at Crimea–Nauchnij, 7 years prior to its official discovery observation at Anderson Mesa.[9]

    Naming

    This minor planet was named after William Shakespeare (1564–1616), the English renaissance dramatist and poet.[2] The approved naming citation was published by the Minor Planet Center on 29 September 1985 (M.P.C. 10044).[10]

    Physical characteristics

    Rotation period and poles

    Three different rotational lightcurves, obtained from photometric observations taken at the Palomar Transient Factory and a group of seven observatories, respectively, found a concurring rotation period of 6.06–6.08 hours with a brightness variation between 0.37 and 0.53 magnitude (U=2/3/2).[6][7][8]

    Diameter and albedo

    According to the space-based NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the body has an albedo of 0.26 and measures 10.5 kilometers in diameter,[4][5] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for members of the Koronis family of 0.24 and calculates a diameter of 10.3 kilometers with an absolute magnitude of 12.1.[3]

    References
    1. "JPL Small-Body Database Browser: 2985 Shakespeare (1983 TV1)" (2017-01-07 last obs.). Jet Propulsion Laboratory. Retrieved 3 July 2017.
    2. Schmadel, Lutz D. (2007). "(2985) Shakespeare". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 246. doi:10.1007/978-3-540-29925-7_2986. ISBN 978-3-540-00238-3.
    3. "LCDB Data for (2985) Shakespeare". Asteroid Lightcurve Database (LCDB). Retrieved 6 December 2016.
    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.
    5. Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 6 December 2016.
    6. Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal. 150 (3): 35. arXiv:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 6 December 2016.
    7. Slivan, Stephen M.; Binzel, Richard P.; Boroumand, Shaida C.; Pan, Margaret W.; Simpson, Christine M.; Tanabe, James T.; et al. (May 2008). "Rotation rates in the Koronis family, complete to H≈11.2". Icarus. 195 (1): 226–276. Bibcode:2008Icar..195..226S. doi:10.1016/j.icarus.2007.11.019. Retrieved 6 December 2016.
    8. Chang, Chan-Kao; Ip, Wing-Huen; Lin, Hsing-Wen; Cheng, Yu-Chi; Ngeow, Chow-Choong; Yang, Ting-Chang; et al. (August 2015). "Asteroid Spin-rate Study Using the Intermediate Palomar Transient Factory". The Astrophysical Journal Supplement Series. 219 (2): 19. arXiv:1506.08493. Bibcode:2015ApJS..219...27C. doi:10.1088/0067-0049/219/2/27. Retrieved 6 December 2016.
    9. "2985 Shakespeare (1983 TV1)". Minor Planet Center. Retrieved 6 December 2016.
    10. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 6 December 2016.
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