7641 Cteatus

(7641) 1986 TT₆
Discovery
Discovered by	M. Antal
Discovery site	Toruń–Piwnice
Discovery date	5 October 1986
Designations
MPC designation	(7641) 1986 TT6
Alternative designations	1986 TT6 · 1975 VT5; 1975 XS4 · 1986 VP5; 1991 HY · 1996 RN26
Minor planet category	Jupiter trojan; (Greek camp)
Orbital characteristics
	Epoch 16 February 2017 (JD 2457800.5)
	Uncertainty parameter 0
Observation arc	40.77 yr (14,893 days)
Aphelion	5.4908 AU
Perihelion	4.9409 AU
Semi-major axis	5.2159 AU
Eccentricity	0.0527
Orbital period (sidereal)	11.91 yr (4,351 days)
Mean anomaly	138.04°
Mean motion	0° 4m 57.72s / day
Inclination	34.695°
Longitude of ascending node	242.06°
Argument of perihelion	229.32°
Jupiter MOID	0.0119 AU
TJupiter	2.6420
Physical characteristics
Dimensions	68.97±3.2 km (IRAS:7); 71.839±1.644; 71.84±1.64 km; 75.28±2.43 km
Synodic rotation period	27.770±0.013 h
Geometric albedo	0.062±0.005; 0.065±0.011; 0.0707 (derived); 0.0708±0.007 (IRAS:7)
Spectral type	D · C
Absolute magnitude (H)	9.09±0.41 · 9.3 · 9.4

(7641) 1986 TT₆ is a carbonaceous Jupiter trojan asteroid in the Greek camp (L₄ Lagrangian Point), 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]

Physical Characteristics

(7641) 1986 TT₆ is a medium-sized asteroid. It has a slow rotation of 22.77 hours.^[8] Its low albedo suggests that it is a carbonaceous asteroid.^[11] It is classified as a D-type asteroid by Pan-STARRS' large-scale survey.^[10]

References

^ ^a ^b ^c "JPL Small-Body Database Browser: 7641 (1986 TT6)" (2016-08-12 last obs.). Jet Propulsion Laboratory. Retrieved 14 December 2016.
^ ^a ^b "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
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

[jpldata-1] "JPL Small-Body Database Browser: 7641 (1986 TT6)" (2016-08-12 last obs.). Jet Propulsion Laboratory. Retrieved 14 December 2016.

[MPC-7641-2] "7641 (1986 TT6)". Minor Planet Center. Retrieved 7 June 2016.

[MPC-Jupiter-Trojans-3] "List of Jupiter Trojans". Minor Planet Center. 20 June 2016. Retrieved 5 December 2016.

[SIMPS-4] 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.

[Grav-2012-5] 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.

[WISE-6] 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.

[AKARI-7] 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.

[Mottola-2011-8] 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.

[lcdb-9] "LCDB Data for (7641)". Asteroid Lightcurve Database (LCDB). Retrieved 7 June 2016.

[Veres-2015-10] 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.

[Cambridge-Norton-11] Norton, O. Richard (2002). The Cambridge Encyclopedia of Meteorites. Cambridge: Cambridge University Press. ISBN 0-521-62143-7.

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