(5476) 1989 TO11

(5476) 1989 TO11
Discovery [1]
Discovered by S. J. Bus
Discovery site Cerro Tololo Obs.
Discovery date 2 October 1989
Designations
MPC designation (5476) 1989 TO11
1989 TO11 · 1990 UW13
Jupiter trojan [2]
(Trojan camp) [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 64.59 yr (23,593 days)
Aphelion 5.4805 AU
Perihelion 4.7367 AU
5.1086 AU
Eccentricity 0.0728
11.55 yr (4,217 days)
218.04°
0° 5m 7.44s / day
Inclination 13.704°
198.55°
95.485°
Jupiter MOID 0.1165 AU
Jupiter Tisserand parameter 2.9390
Physical characteristics
Dimensions 35.096±0.473[4][5]
42.23 km (calculated)[2]
5.780±0.001 h[6]
0.057 (assumed)[2]
0.099±0.019[4][5]
C [2]
10.4[4] · 10.6[1][2] · 10.87±0.06[7]

    (5476) 1989 TO11 is a carbonaceous Jupiter trojan from the Trojan camp, approximately 40 kilometers in diameter. It was discovered on 2 October 1989, by American astronomer Schelte Bus at the Cerro Tololo Inter-American Observatory in Chile.[8]

    Classification and orbit

    The C-type Jovian asteroid orbits the Sun at a distance of 4.7–5.5 AU once every 11 years and 7 months (4,217 days). Its orbit has an eccentricity of 0.07 and an inclination of 14° with respect to the ecliptic.[1] The first precovery was taken at Palomar Observatory in 1952, extending the asteroid's observation arc by 37 years prior to its discovery.[8]

    Physical characteristics

    Photometric observations of this asteroid during 1994 were used by Italian astronomer Stefano Mottola to build a lightcurve showing a rotation period of 5.780 hours with a brightness variation of 0.30 magnitude.[6]

    According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 35.1 kilometers in diameter and its surface has an albedo of 0.099,[4][5] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 42.2 kilometers.[2]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 5476 (1989 TO11)" (2016-01-14 last obs.). Jet Propulsion Laboratory. Retrieved 14 December 2016.
    2. 1 2 3 4 5 6 "LCDB Data for (5476)". Asteroid Lightcurve Database (LCDB). Retrieved 29 June 2016.
    3. ↑ "List of Jupiter Trojans". Minor Planet Center. 20 June 2016. Retrieved 29 June 2016.
    4. 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" (PDF). The Astrophysical Journal. 741 (2): 25. Bibcode:2011ApJ...741...90M. arXiv:1109.6407 Freely accessible. doi:10.1088/0004-637X/741/2/90. Retrieved 29 June 2016.
    5. 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. arXiv:1209.1549 Freely accessible. doi:10.1088/0004-637X/759/1/49. Retrieved 14 December 2016.
    6. 1 2 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.
    7. ↑ 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. Bibcode:2015Icar..261...34V. arXiv:1506.00762 Freely accessible. doi:10.1016/j.icarus.2015.08.007. Retrieved 29 June 2016.
    8. 1 2 "5476 (1989 TO11)". Minor Planet Center. Retrieved 29 June 2016.
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