| Discovery site | Near Earth Asteroid Tracking (NEAT) |
|---|---|
| Discovery date | 15 October 2001 |
| Mpc name | P/2001 T4 |
| Epoch | 21 November 2025 (JD 2461000.5) |
| Observation arc | 7.51 years |
| Earliest precovery date | 27 August 2001 |
| Obs | 177 |
| Perihelion | 8.555 AU |
| Aphelion | 19.142 AU |
| Semimajor | 13.849 AU |
| Eccentricity | 0.38222 |
| Period | 51.537 years |
| Inclination | 15.386° |
| Asc node | 64.335° |
| Arg peri | 321.99° |
| Mean | 163.94° |
| Tjup | 3.284 |
| Earth moid | 7.582 AU |
| Jupiter moid | 3.693 AU |
| Mean radius | 14.32 km (8.90 mi)[1] |
| M 1 | 7.0 |
| M 2 | 10.6 |
| Last p | 20 May 2002 |
| Next p | 26 November 2053[2][3] |
166P/NEAT is a Chiron-type comet and centaur in the outer Solar System. It was discovered by the Near Earth Asteroid Tracking (NEAT) project in 2001 and initially classified a comet with provisional designation P/2001 T4 (NEAT), as it was apparent from the discovery observations that the body exhibited a cometary coma. It is one of few known bodies with centaur-like orbits that display a coma, along with 60558 Echeclus, 2060 Chiron, 165P/LINEAR and 167P/CINEOS. It is also one of the reddest centaurs ever known.[4]
166P/NEAT has a perihelion distance of 8.56 astronomical units.[5]
References
- ^ J. C. Shi & Y. H. Ma (2015). "CCD photometry of active Centaur 166P/2001 T4 (NEAT)". Monthly Notices of the Royal Astronomical Society. 454 (4): 3635–3640. Bibcode:2015MNRAS.454.3635S. doi:10.1093/mnras/stv2274
- ^ Syuichi Nakano (2005-06-30). "166P/NEAT (2001 T4) (NK 1187)". OAA Computing and Minor Planet Sections. Retrieved 2012-02-20.
- ^ "Horizons Batch for 166P/NEAT on 2053-Nov-26" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons. Retrieved 2023-07-06. (JPL#51 Soln.date: 2021-Apr-15)
- ^ J. M. Bauer; Y. R. Fernández; K. J. Meech (2003). "An Optical Survey of the Active Centaur C/NEAT (2001 T4)". Publications of the Astronomical Society of the Pacific. 115 (81): 981–989. Bibcode:2003PASP..115..981B. doi:10.1086/377012
- ^ "166P/NEAT – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory. Retrieved 2008-09-14.
External links
- 166P/NEAT at Seiichi Yoshida's website