3288 Seleucus

3288 Seleucus, provisional designation 1982 DV, is a rare-type stony asteroid, classified as near-Earth object of the Amor group of asteroids, approximately 2.5 kilometers in diameter. It was discovered on 28 February 1982, by German astronomer Hans-Emil Schuster at ESO's La Silla Observatory site in northern Chile.[3] It was named after the Hellenistic general and Seleucid ruler Seleucus I Nicator.[2]

3288 Seleucus
Discovery [1]
Discovered byH.-E. Schuster
Discovery siteLa Silla Obs.
Discovery date28 February 1982
Designations
(3288) Seleucus
Pronunciation/sɪˈluːkəs/
Named after
Seleucus I Nicator
(Seleucid Empire)[2]
1982 DV
Amor · NEO [1][3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc35.34 yr (12,907 days)
Aphelion2.9605 AU
Perihelion1.1053 AU
2.0329 AU
Eccentricity0.4563
2.90 yr (1,059 days)
77.175°
0° 20m 24s / day
Inclination5.9306°
218.65°
349.29°
Earth MOID0.1029 AU · 40.1 LD
Physical characteristics
Dimensions2.2 km[4]
2.49±0.07 km[5]
2.8 km (Gehrels)[1]
2.832±1.100 km[6]
16 h (dated)[7]
75±5 h[8]
75 h[9]
0.139±0.127[6]
0.22 (Gehrels)[1]
0.23[4]
0.24±0.04[5]
S (Tholen) [1] · K (SMASS) [1] · S [10]
B–V = 0.910[1]
U–B = 0.500[1]
15.2[5] · 15.3[1] · 15.5[4][10] · 15.50±0.3[6] · 15.6±0.3[8]

    Orbit

    Seleucus orbits the Sun in the inner main-belt at a distance of 1.1–3.0 AU once every 2 years and 11 months (1,059 days). Its orbit has an eccentricity of 0.46 and an inclination of 6° with respect to the ecliptic.[1] Seleucus has a Earth minimum orbital intersection distance of 0.1029 AU (15,400,000 km), which corresponds to 40.1 lunar distances.[1] As no precoveries were taken, and no prior identifications were made, the body's observation arc begins with its official discovery observation at La Silla.[3]

    Physical parameters

    Spectral type

    On the Tholen and SMASS taxonomic scheme, Seleucus is classified as a featureless S-type and rare K-type asteroid, respectively.[1]

    Rotation period

    It has a relatively long rotation period of 75 hours with a brightness variation of 1.0 magnitude, indicative of a non-spheroidal shape (U=3/3).[8][9] While most minor planets have spin rate between 2 and 20 hours, Seleucus still rotates faster than a typical slow rotator, which have periods above 100 hours.

    Diameter and albedo

    According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Seleucus measures 2.49 and 2.83 kilometers in diameter, and its surface has an albedo of 0.139 and 0.24, respectively.[5][6] The Collaborative Asteroid Lightcurve Link adopts an albedo of 0.23 and a diameter of 2.2 kilometers, based on modeled data by Alan Harris.[4][10]

    Naming

    This minor planet is named for Seleucus I Nicator, a general in the army of Alexander the Great, and, after the death of Alexander, founder and king of the Seleucid Empire. The lunar crater Seleucus is also named after him.[2] The approved naming citation was published by the Minor Planet Center on 29 September 1985 (M.P.C. 10046).[11]

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    References
    1. "JPL Small-Body Database Browser: 3288 Seleucus (1982 DV)" (2017-07-01 last obs.). Jet Propulsion Laboratory. Retrieved 3 July 2017.
    2. Schmadel, Lutz D. (2007). "(3288) Seleucus". Dictionary of Minor Planet Names – (3288) Seleucus. Springer Berlin Heidelberg. p. 274. doi:10.1007/978-3-540-29925-7_3289. ISBN 978-3-540-00238-3.
    3. "3288 Seleucus (1982 DV)". Minor Planet Center. Retrieved 9 January 2017.
    4. Harris, Alan W. (February 1998). "A Thermal Model for Near-Earth Asteroids". Icarus. 131 (2): 291–301. Bibcode:1998Icar..131..291H. doi:10.1006/icar.1997.5865. Retrieved 9 January 2017.
    5. Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal. 814 (2): 13. arXiv:1509.02522. Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. Retrieved 9 January 2017.
    6. Mainzer, A.; Grav, T.; Masiero, J.; Bauer, J.; Cutri, R. M.; McMillan, R. S.; et al. (November 2012). "Physical Parameters of Asteroids Estimated from the WISE 3-Band Data and NEOWISE Post-Cryogenic Survey". The Astrophysical Journal Letters. 760 (1): 6. arXiv:1210.0502. Bibcode:2012ApJ...760L..12M. doi:10.1088/2041-8205/760/1/L12. Retrieved 9 January 2017.
    7. Debehogne, H.; de Sanctis, G.; Zappala, V. (August 1983). "Photoelectric photometry of asteroids 45, 120, 776, 804, 814, and 1982DV". Icarus. 55 (2): 236–244. Bibcode:1983Icar...55..236D. doi:10.1016/0019-1035(83)90078-7. ISSN 0019-1035. Retrieved 9 January 2017.
    8. Harris, A. W.; Young, J. W.; Bowell, E.; Tholen, D. J. (November 1999). "Asteroid Lightcurve Observations from 1981 to 1983". Icarus. 142 (1): 173. Bibcode:1999Icar..142..173H. doi:10.1006/icar.1999.6181. Retrieved 9 January 2017.
    9. Pravec, P.; Harris, A. W.; Scheirich, P.; Kusnirák, P.; Sarounová, L.; Hergenrother, C. W.; et al. (January 2005). "Tumbling asteroids". Icarus. 173 (1): 108–131. Bibcode:2005Icar..173..108P. doi:10.1016/j.icarus.2004.07.021. Retrieved 9 January 2017.
    10. "LCDB Data for (3288) Seleucus". Asteroid Lightcurve Database (LCDB). Retrieved 9 January 2017.
    11. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 9 January 2017.
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