(5025) 1986 TS6
Discovery [1] | |
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Discovered by | M. Antal |
Discovery site | Toruń–Piwnice |
Discovery date | 5 October 1986 |
Designations | |
MPC designation | (5025) 1986 TS6 |
1986 TS6 · 1989 BX | |
Jupiter trojan [1][2] Greek [3] · background [4] | |
Orbital characteristics [2] | |
Epoch 23 March 2018 (JD 2458200.5) | |
Uncertainty parameter 0 | |
Observation arc | 31.64 yr (11,555 d) |
Aphelion | 5.5876 AU |
Perihelion | 4.8117 AU |
5.1996 AU | |
Eccentricity | 0.0746 |
11.86 yr (4,331 d) | |
221.74° | |
0° 4m 59.16s / day | |
Inclination | 11.021° |
347.79° | |
72.958° | |
Jupiter MOID | 0.1039 AU |
TJupiter | 2.9580 |
Physical characteristics | |
Mean diameter |
±3.64 km 39.84[5] 57.56 km (derived)[6] ±4.9 km 57.83[7] |
±25 h 250[8] | |
0.0404(derived)[6] ±0.012 0.0635[7] ±0.009 0.084[5] | |
C/X (Pan-STARRS)[6][9] C/X (SDSS-MOC)[10][11] V–I = ±0.042 0.830[6] | |
9.8[7] 10.3[1][2][6][5] | |
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(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 the Gas Giant's L4 Lagrangian point, 60° ahead on its orbit .[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 ±25 hours with a brightness variation of 250 in 0.2magnitude (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]
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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 2 3 4 5 6 "5025 (1986 TS6)". Minor Planet Center. Retrieved 22 June 2018.
- 1 2 3 4 "JPL Small-Body Database Browser: 5025 (1986 TS6)" (2018-05-25 last obs.). Jet Propulsion Laboratory. Retrieved 22 June 2018.
- 1 2 "List of Jupiter Trojans". Minor Planet Center. 1 June 2018. Retrieved 22 June 2018.
- ↑ "Asteroid (5025) 1986 TS6 – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 22 June 2018.
- 1 2 3 4 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 22 June 2018. (online catalog)
- 1 2 3 4 5 6 7 8 9 "LCDB Data for (5025)". Asteroid Lightcurve Database (LCDB). Retrieved 22 June 2018.
- 1 2 3 4 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. Bibcode:2004PDSS...12.....T. Retrieved 22 June 2018.
- 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 22 June 2018.
- 1 2 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" (PDF). Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 22 June 2018.
- 1 2 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 22 June 2018.
- 1 2 "Asteroid (5025) 1986 TS6". Small Bodies Data Ferret. Retrieved 22 June 2018.
- 1 2 "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 22 June 2018.
External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Discovery Circumstances: Numbered Minor Planets (5001)-(10000) – Minor Planet Center
- (5025) 1986 TS6 at AstDyS-2, Asteroids—Dynamic Site
- (5025) 1986 TS6 at the JPL Small-Body Database