(7641) 1986 TT6

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(7641) 1986 TT6
Discovery [1]
Discovered by M. Antal
Discovery site Toruń–Piwnice
Discovery date 5 October 1986
Designations
MPC designation (7641) 1986 TT6
1986 TT6 · 1975 VT5
1975 XS4 · 1986 VP5
1991 HY · 1996 RN26
Jupiter trojan[2]
(Greek camp)[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 41.36 yr (15,107 days)
Aphelion 5.4901 AU
Perihelion 4.9408 AU
5.2155 AU
Eccentricity 0.0527
11.91 yr (4,351 days)
154.86°
0° 4m 57.72s / day
Inclination 34.694°
242.06°
229.08°
Jupiter MOID 0.0136 AU
Jupiter Tisserand parameter 2.6420
Physical characteristics
Dimensions 68.97±3.2 km (IRAS:7)[4]
71.839±1.644[5]
71.84±1.64 km[6]
75.28±2.43 km[7]
27.770±0.013 h[8]
0.062±0.005[7]
0.065±0.011[6][5]
0.0707 (derived)[9]
0.0708±0.007 (IRAS:7)[4]
D[10] · C[9]
9.09±0.41[10] · 9.3[6][7][9] · 9.4[1]

(7641) 1986 TT6 is a carbonaceous Jupiter trojan asteroid in the Greek camp, approximately 69 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]

Inclined orbit of 1986 TT6

The C-type Jovian asteroid is orbiting in the leading Greek camp at Jupiter's L4 Lagrangian point, 60° ahead of the giant planet's orbit (see Trojans in astronomy).

It orbits the Sun at a distance of 4.9–5.5 AU once every 11 years and 11 months (4,351 days). Its orbit has an eccentricity of 0.05 and an inclination of 35° with respect to the ecliptic.[1] Highly inclined orbits are unusual for Jupiter trojan.

Physical Characteristics[edit]

1986 TT6 is characterized as a dark D-type asteroid by Pan-STARRS' large-scale survey.[10]

With a mean-diameter of approximately 69 kilometers, 1986 TT6 is a medium-sized asteroid. It has a slower than average rotation period of 22.77 hours.[8] Its low albedo suggests that it is a carbonaceous asteroid.[11]

Naming[edit]

As of 2017, 1986 TT6 remains unnamed.[2]

References[edit]

  1. ^ a b c d "JPL Small-Body Database Browser: 7641 (1986 TT6)" (2017-03-14 last obs.). Jet Propulsion Laboratory. Retrieved 26 May 2017. 
  2. ^ a b c "7641 (1986 TT6)". Minor Planet Center. Retrieved 7 June 2016. 
  3. ^ "List of Jupiter Trojans". Minor Planet Center. 20 June 2016. Retrieved 5 December 2016. 
  4. ^ a b Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. Bibcode:2004PDSS...12.....T. Retrieved 8 December 2016. 
  5. ^ a b 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. 
  6. ^ a b c 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. Retrieved 7 June 2016. 
  7. ^ a b c Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved 7 June 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 7 June 2016. 
  9. ^ a b c "LCDB Data for (7641)". Asteroid Lightcurve Database (LCDB). Retrieved 7 June 2016. 
  10. ^ a b c 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 7 June 2016. 
  11. ^ Norton, O. Richard (2002). The Cambridge Encyclopedia of Meteorites. Cambridge: Cambridge University Press. ISBN 0-521-62143-7. 

External links[edit]