(5025) 1986 TS6

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(5025) 1986 TS6
(5025) 1986 TS6 Hubble.jpg
Hubble Space Telescope image of 1986 TS6 taken in 2013
Discovery[1]
Discovered byM. Antal
Discovery siteToruń–Piwnice
Discovery date5 October 1986
Designations
(5025) 1986 TS6
1986 TS6 · 1989 BX
Minor planet category
Jupiter trojan[1][2]
Greek[3] · background[4]
Orbital characteristics[2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc31.64 yr (11,555 d)
Aphelion5.5876 AU
Perihelion4.8117 AU
5.1996 AU
Eccentricity0.0746
11.86 yr (4,331 d)
221.74°
0° 4m 59.16s / day
Inclination11.021°
347.79°
72.958°
Jupiter MOID0.1039 AU
TJupiter2.9580
Physical characteristics
Mean diameter
39.84±3.64 km[5]
57.56 km (derived)[6]
57.83±4.9 km[7]
250±25 h[8]
0.0404 (derived)[6]
0.0635±0.012[7]
0.084±0.009[5]
C/X (Pan-STARRS)[6][9]
C/X (SDSS-MOC)[10][11]
V–I = 0.830±0.042[6]
Absolute magnitude (H)
9.8[7]
10.3[1][2][6][5]

(5025) 1986 TS6, provisional designation 1986 TS6, is a larger Jupiter trojan from the Greek camp, approximately 50 kilometers (31 miles) in diameter. The unusual C/X-type Jovian asteroid is possibly a slow rotator with a rotation period of 250 hours.[6] It was discovered on 5 October 1986 by Slovak astronomer Milan Antal at the Toruń Centre for Astronomy in Piwnice, Poland.[1] It remains unnamed since its numbering in January 1992.[12]

Orbit and classification[]

1986 TS6 is a Jupiter trojan which stays in a 1:1 orbital resonance with Jupiter. It is located in the leading Greek camp at its L4 Lagrangian point, 60° ahead on its orbit (see Trojans in astronomy).[3]

It orbits the Sun at a distance of 4.8–5.6 AU once every 11 years and 10 months (4,331 days; semi-major axis of 5.2 AU). Its orbit has an eccentricity of 0.07 and an inclination of 11° with respect to the ecliptic.[2] The body's observation arc begins with its official discovery observation at Piwnice in October 1986.[1]

Physical characteristics[]

1986 TS6 is an unusual C-/X-type according to Pan-STARRS survey and the SDSS-based taxonomy,[9][10][11] and has a V–I color index of 0.830.[6]

Rotation period[]

In November 2009, Stefano Mottola at the Calar Alto Observatory observed 1986 TS6 in a photometric survey of 80 Jupiter trojans. The obtained lightcurve 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. As of 2018, no secure period has been obtained.[6]

Diameter and albedo[]

According to the surveys carried out by the Infrared Astronomical Satellite (IRAS) and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, 1986 TS6 measures 39.84 and 57.83 kilometers in diameter with an albedo of 0.084 and 0.064, respectively.[7][5] CALL agrees with the results obtained by IRAS, assumes an even lower albedo of 0.0404, and calculates a similar diameter of 57.56 kilometers.[6]

100+ largest Jupiter trojans

Numbering and naming[]

This minor planet was numbered by the Minor Planet Center on 19 January 1992 (M.P.C. 19489).[12] As of 2018, it has not been named.[1]

References[]

  1. ^ Jump up to: a b c d e f "5025 (1986 TS6)". Minor Planet Center. Retrieved 22 June 2018.
  2. ^ Jump up to: a b c d "JPL Small-Body Database Browser: 5025 (1986 TS6)" (2018-05-25 last obs.). Jet Propulsion Laboratory. Retrieved 22 June 2018.
  3. ^ Jump up to: a b "List of Jupiter Trojans". Minor Planet Center. 1 June 2018. Retrieved 22 June 2018.
  4. ^ "Asteroid (5025) 1986 TS6 – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 22 June 2018.
  5. ^ Jump up to: a b c d 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. S2CID 119101711. (online catalog)
  6. ^ Jump up to: a b c d e f g h i "LCDB Data for (5025)". Asteroid Lightcurve Database (LCDB). Retrieved 22 June 2018.
  7. ^ Jump up to: a b c d Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System – IRAS-A-FPA-3-RDR-IMPS-V6.0: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 22 June 2018.
  8. ^ Jump up to: 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.
  9. ^ Jump up to: 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:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. S2CID 53493339.
  10. ^ Jump up to: a b Carvano, J. M.; Hasselmann, P. H.; Lazzaro, D.; Mothé-Diniz, T. (February 2010). "SDSS-based taxonomic classification and orbital distribution of main belt asteroids". Astronomy and Astrophysics. 510: 12. Bibcode:2010A&A...510A..43C. doi:10.1051/0004-6361/200913322. Retrieved 30 October 2019. (PDS data set)
  11. ^ Jump up to: a b "Asteroid (5025) 1986 TS6". Small Bodies Data Ferret. Retrieved 22 June 2018.
  12. ^ Jump up to: a b "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 22 June 2018.

External links[]

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