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== Physical Characteristics == |
== Physical Characteristics == |
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{{ |
{{mp|1986 TT|6}} is characterized as a dark [[D-type asteroid]] by [[Pan-STARRS]]{{'}} large-scale survey.<ref name="Veres-2015" /> |
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With a mean-diameter of approximately 69 kilometers, {{ |
With a mean-diameter of approximately 69 kilometers, {{mp|1986 TT|6}} is a medium-sized asteroid. It has a slower than average [[rotation period]] of 22.77 hours.<ref name="Mottola-2011" /> Its low albedo suggests that it is a carbonaceous asteroid.<ref name="Cambridge-Norton" /> |
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== Naming == |
== Naming == |
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As of 2017, {{ |
As of 2017, {{mp|1986 TT|6}} remains unnamed.<ref name="MPC-7641" /> |
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== References == |
== References == |
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Revision as of 00:32, 27 May 2018
| Discovery [1] | |
|---|---|
| Discovered by | M. Antal |
| Discovery site | Toruń–Piwnice |
| Discovery date | 5 October 1986 |
| Designations | |
| (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 |
| TJupiter | 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
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
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
As of 2017, 1986 TT6 remains unnamed.[2]
References
- ^ a b c d "JPL Small-Body Database Browser: 7641 (1986 TT6)" (2017-03-14 last obs.). Jet Propulsion Laboratory. Retrieved 26 May 2017.
- ^ a b c "7641 (1986 TT6)". Minor Planet Center. Retrieved 7 June 2016.
- ^ "List of Jupiter Trojans". Minor Planet Center. 20 June 2016. Retrieved 5 December 2016.
- ^ 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.
- ^ 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:1209.1549. Bibcode:2012ApJ...759...49G. doi:10.1088/0004-637X/759/1/49. Retrieved 14 December 2016.
- ^ 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:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 7 June 2016.
- ^ 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.
- ^ 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.
- ^ a b c "LCDB Data for (7641)". Asteroid Lightcurve Database (LCDB). Retrieved 7 June 2016.
- ^ 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:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 7 June 2016.
- ^ Norton, O. Richard (2002). The Cambridge Encyclopedia of Meteorites. Cambridge: Cambridge University Press. ISBN 0-521-62143-7.
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 (5001)-(10000) – Minor Planet Center
- 7641 Cteatus at the JPL Small-Body Database
