11351 Leucus

11351 Leucus
Discovery [1]
Discovered by SCAP
Discovery site Beijing Xinglong Obs.
Discovery date 12 October 1997
Designations
MPC designation 11351 Leucus
Pronunciation /ˈljuːkəs/
Named after
 Leucus (Greek mythology)[2]
1997 TS25 · 1996 VP39
Jupiter trojan[2]
(Greek camp)
Orbital characteristics [1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 33.05 yr (12,073 days)       
Aphelion 5.6198 AU (840.71 Gm)
Perihelion 4.9457 AU (739.87 Gm)
5.2828 AU (790.30 Gm)
Eccentricity 0.063805
12.14 yr (4,435 days)
192.51°
0° 4m 52.223s / day
Inclination 11.561°
251.09°
161.47°
Jupiter MOID 0.1026 AU
Jupiter Tisserand parameter 2.955
Physical characteristics
Dimensions 42.16±4.0 km (IRAS:2)[1]
34.16±0.65 km[3]
42.07 km (derived)[4]
Mean radius
 21.08±2 km
515±5 h[5]
0.0627±0.014 (IRAS:2)[1]
0.079±0.013[3]
0.0524 (derived)[4]
C [4]
10.7[1][3][4]
11.38±0.00[6]

    11351 Leucus, provisional designation 1997 TS25, is a dark asteroid and extremely slow rotator, classified as Jupiter trojan, about 42 kilometers in diameter. It was discovered on 12 October 1997, by the Beijing Schmidt CCD Asteroid Program (SCAP) at Xinglong Station in the Chinese province of Hebei.[2]

    The C-type asteroid is located in the Greek camp of Jupiter's leading L4 Lagrangian point. It orbits the Sun at a distance of 4.9–5.6 AU once every 12 years and 2 months (4,435 days) with an eccentricity of 0.06 and an inclination of 12° in respect of the plane of the ecliptic.[1]

    In 2012 and 2013, rotational light-curve were obtained through photometric observations at the CTIO in Chile, at Lowell's Anderson Mesa Station in Arizona, and at the Center for Solar System Studies (CS3) in California. The light-curves showed an extremely slow rotation period of 515±5 hours with a brightness amplitude of 0.53 in magnitude (U=2+). No evidence of a non-principal axis rotation (NPAR) was found.[5]

    According to the surveys carried out by the Infrared Astronomical Satellite, IRAS, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the body has a low albedo of 0.06 and 0.08, with a diameter of 42.1 and 34.2 kilometers, respectively.[1][3] The Collaborative Asteroid Lightcurve Link (CALL) derives a lower albedo of 0.05 and a diameter of 42.1 kilometers, in accordance with the result obtained by IRAS.[4]

    The minor planet was named from Greek mythology, after the Achaean warrior Leucus in Homer's Iliad. He was a companion of Odysseus. Leucus was killed during the Trojan War by Antiphus, one of the fifty sons of King Priam of Troy.[2][7]

    References

    1. 1 2 3 4 5 6 7 "JPL Small-Body Database Browser: 11351 Leucus (1997 TS25)" (2015-08-14 last obs.). Jet Propulsion Laboratory. Retrieved 11 April 2016.
    2. 1 2 3 4 "11351 Leucus (1997 TS25)". Minor Planet Center. Retrieved February 2016.
    3. 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.
    4. 1 2 3 4 5 "LCDB Data for (11351) Leucus". Asteroid Lightcurve Database (LCDB). Retrieved February 2016.
    5. 1 2 French, Linda M.; Stephens, Robert, D.; Coley, Daniel R.; Wasserman, Lawrence H.; Vilas, Faith; La Rocca, Daniel (October 2013). "A Troop of Trojans: Photometry of 24 Jovian Trojan Asteroids". The Minor Planet Bulletin 40 (4): 198–203. Bibcode:2013MPBu...40..198F. ISSN 1052-8091.
    6. ↑ 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.
    7. ↑ Homer, Iliad, 4. 491

    External links


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