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)[3] | |
| Orbital characteristics [1] | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 33.87 yr (12,372 days) |
| Aphelion | 5.6204 AU |
| Perihelion | 4.9497 AU |
| 5.2851 AU | |
| Eccentricity | 0.0635 |
| 12.15 yr (4,438 days) | |
| 225.26° | |
| 0° 4m 51.96s / day | |
| Inclination | 11.558° |
| 251.09° | |
| 161.20° | |
| Jupiter MOID | 0.1006 AU |
| Jupiter Tisserand parameter | 2.9550 |
| Physical characteristics | |
| Dimensions |
34.155±0.646[4] 34.16±0.65 km[5] 42.07 km (derived)[6] 42.16±4.0 km (IRAS:2)[1] |
| 515±1.3 h[7] | |
|
0.0524 (derived)[6] 0.0627±0.014 (IRAS:2)[1] 0.079±0.013[5][4] | |
|
B–V = 0.739±0.044[8] V–R = 0.498±0.044[8] V–I = 0.900±0.057[8] C [6] | |
|
10.7[1][5][6] 11.38±0.00[9] | |
|
| |
11351 Leucus (/ˈljuːkəs/), provisional designation 1997 TS25, is a dark Jupiter trojan. It is an exceptionally slow rotator approximately 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 (4,438 days). Its orbit has an eccentricity of 0.06 and an inclination of 12° with respect to the ecliptic.[1] The first precovery was taken at Siding Spring Observatory in 1982, extending the asteroid's observation arc by 15 years prior to its discovery.[2]
During spring 2013, a rotational light-curve was obtained from photometric observations made by Robert Stevens and Daniel Coley at the Center for Solar System Studies (CS3), California, using a 0.35/0.4-meter Schmidt-Cassegrain telescope. The light-curve showed an exceptionally slow rotation period of 515±1.3 hours with a brightness variation of 0.53±0.1 in magnitude (U=2+). No evidence of a non-principal axis rotation (NPAR) was found.[7]
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.[4][5] The Collaborative Asteroid Lightcurve Link derives a lower albedo of 0.05 and a diameter of 42.1 kilometers, in accordance with the result obtained by IRAS.[6]
The minor planet was named from Greek mythology, after the Achaean warrior Leucus in Homer's Iliad. He was a companion of Odysseus.[2] Leucus was killed during the Trojan War by Antiphus, one of the fifty sons of King Priam of Troy.[10] Naming citation was published on 22 February 2016 (M.P.C. 98711).[11]
References
- 1 2 3 4 5 6 "JPL Small-Body Database Browser: 11351 Leucus (1997 TS25)" (2016-06-08 last obs.). Jet Propulsion Laboratory. Retrieved 4 December 2016.
- 1 2 3 4 5 "11351 Leucus (1997 TS25)". Minor Planet Center. Retrieved 26 May 2016.
- ↑ "List of Jupiter Trojans". Minor Planet Center. 20 June 2016. Retrieved 4 December 2016.
- 1 2 3 Grav, T.; Mainzer, A. K.; Bauer, J. M.; Masiero, J. R.; Nugent, C. R. (November 2012). "WISE/NEOWISE Observations of the Jovian Trojan Population: Taxonomy". The Astrophysical Journal. 759 (1): 10. Bibcode:2012ApJ...759...49G. doi:10.1088/0004-637X/759/1/49. Retrieved 4 December 2016.
- 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. Retrieved 26 May 2016. - 1 2 3 4 5 "LCDB Data for (11351) Leucus". Asteroid Lightcurve Database (LCDB). Retrieved 26 May 2016.
- 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" (PDF). The Minor Planet Bulletin. 40 (4): 198–203. Bibcode:2013MPBu...40..198F. ISSN 1052-8091. Retrieved 26 May 2016.
- 1 2 3 Hainaut, O. R.; Boehnhardt, H.; Protopapa, S. (October 2012). "Colours of minor bodies in the outer solar system. II. A statistical analysis revisited". Astronomy and Astrophysics. 546: 20. arXiv:1209.1896. Bibcode:2012A&A...546A.115H. doi:10.1051/0004-6361/201219566. Retrieved 26 May 2016.
- ↑ 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 26 May 2016.
- ↑ Homer, Iliad, 4. 491
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 26 May 2016.
External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (10001)-(15000) – Minor Planet Center
- 11351 Leucus at the JPL Small-Body Database
