(5025) 1986 TS6

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(5025) 1986 TS6
Discovery [1]
Discovered by M. Antal
Discovery site Toruń–Piwnice
Discovery date 5 October 1986
MPC designation (5025) 1986 TS6
1986 TS6 · 1989 BX
Jupiter trojan[2][3]
(Greek camp)[4]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 30.48 yr (11,132 days)
Aphelion 5.5870 AU
Perihelion 4.8132 AU
5.2001 AU
Eccentricity 0.0744
11.86 yr (4,331 days)
0° 4m 59.16s / day
Inclination 11.021°
Jupiter MOID 0.1047 AU
TJupiter 2.9580
Physical characteristics
Dimensions 39.843±3.637[5][6]
57.56 km (derived)[3]
57.83±4.9 km (IRAS:2)[7]
250±25 h[8]
0.0404 (derived)[3]
0.0635±0.012 (IRAS:2)[7]
10.3[1][3][5] · 10.62±0.65[9]

(5025) 1986 TS6, is a carbonaceous Jupiter trojan from the Greek camp and a potentially slow rotating asteroid, approximately 50 kilometers in diameter. It was discovered on 5 October 1986, by Slovak astronomer Milan Antal at the Toruń Centre for Astronomy in Piwnice, Poland.[2]

Orbit and classification[edit]

The dark Jovian asteroid is orbiting in the leading Greek camp at Jupiter's L4 Lagrangian point, 60° ahead of its orbit (see Trojans in astronomy). It orbits the Sun at a distance of 4.8–5.6 AU once every 11 years and 10 months (4,331 days). Its orbit has an eccentricity of 0.07 and an inclination of 11° with respect to the ecliptic.[1]

Physical characteristics[edit]

Based on a large-scale survey performed by Pan-STARRS, the C-type asteroid has also been rated as a transitional CX-type, an intermediate between the carbonaceous C-type and X-type asteroids.[9] In November 2009, the body was observed in a photometric lightcurve survey of 80 Jupiter trojans, which rendered a very long rotation period of 250±25 hours with a brightness variation of 0.2 in magnitude (U=1).[8] However, the Collaborative Asteroid Lightcurve Link (CALL) considers the result as incorrect.[3]

According to the surveys carried out by the Infrared Astronomical Satellite (IRAS), and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 57.8 and 39.8 kilometers in diameter with an albedo of 0.064 and 0.084, respectively.[7][5][6] CALL agrees with the results obtained by IRAS, assumes an even lower albedo of 0.04, and calculates a similar diameter of 57.6 kilometers.[3]


  1. ^ a b c d "JPL Small-Body Database Browser: 5025 (1986 TS6)" (2016-05-29 last obs.). Jet Propulsion Laboratory. Retrieved 14 December 2016. 
  2. ^ a b "5025 (1986 TS6)". Minor Planet Center. Retrieved 29 June 2016. 
  3. ^ a b c d e f g "LCDB Data for (5025)". Asteroid Lightcurve Database (LCDB). Retrieved 29 June 2016. 
  4. ^ "List of Jupiter Trojans". Minor Planet Center. 20 June 2016. Retrieved 29 June 2016. 
  5. ^ a b c d 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:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. 
  6. ^ a b c 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. arXiv:1209.1549Freely accessible. Bibcode:2012ApJ...759...49G. doi:10.1088/0004-637X/759/1/49. Retrieved 14 December 2016. 
  7. ^ a b c Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. 12. Bibcode:2004PDSS...12.....T. Retrieved 8 December 2016. 
  8. ^ a b Mottola, Stefano; Di Martino, Mario; Erikson, Anders; Gonano-Beurer, Maria; Carbognani, Albino; Carsenty, Uri; et al. (May 2011). "Rotational Properties of Jupiter Trojans. I. Light Curves of 80 Objects". The Astronomical Journal. 141 (5): 32. Bibcode:2011AJ....141..170M. doi:10.1088/0004-6256/141/5/170. Retrieved 29 June 2016. 
  9. ^ a b 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:1506.00762Freely accessible. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 29 June 2016. 

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