|Discovery and designation|
|Discovered by||David L. Rabinowitz|
|Discovery date||April 26, 1993|
|Other names||1993 HA2|
|Reference date December 31, 2006 (JD 2454100.5)|
|Longest distance from the Sun||5607.451 Gm (37.483 AU)|
|Shortest distance from the Sun||1769.167 Gm (11.826 AU)|
|Longest distance from the center of its orbital path
|3688.309 Gm (24.655 AU)|
|How long it takes to complete an orbit||44714.802 d (122.42 a)|
|Average speed||5.57 km/s|
|Angle above the reference plane
|Size and other qualities|
|Average density||2.0? g/cm³|
|Surface gravity||~0.0148 m/s²|
|Escape velocity||~0.0280 km/s|
|Angle at which it turns
(in relation to its orbit)
|How much light it reflects||0.06|
|Avg. surface temp.||~56 K|
7066 Nessus is a centaur (a type of icy planetoid) that was found by David L. Rabinowitz, working with Spacewatch, at Kitt Peak on 26 April, 1993. It was the second centaur found by him (5145 Pholus being his first), and the third centaur to be found (2060 Chiron was the first). It was officially announced on May 13, 1993 in IAUC 5789 with designation 1993 HA2.
Orbit[change | change source]
Nessus finishes one orbit around the Sun in 122.4 years, an eccentricity of 0.52 and an inclination to the ecliptic of 15.6 degrees. At perihelion (closest approach to the Sun), it moves closer to the Sun than Uranus, while at aphelion (farthest approach to the Sun) it goes even farther thanNeptune.
References[change | change source]
- "JPL Small-Body Database Browser: 7066 Nessus (1993 HA2)". 2004-05-26 last obs. Retrieved 2008-09-05. Check date values in:
- John Stansberry, Will Grundy, Mike Brown, Dale Cruikshank, John Spencer, David Trilling, Jean-Luc Margot (2007). "Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope". University of Arizona, Lowell Observatory, California Institute of Technology, NASA Ames Research Center, Southwest Research Institute, Cornell University. Retrieved 2008-10-18.
- Wm. Robert Johnston (22 August 2008). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 2008-09-05.
- Horner, J.; Evans, N.W.; Bailey, M. E. (2004). Simulations of the Population of Centaurs I: The Bulk Statistics. http://arxiv.org/abs/astro-ph?papernum=0407400. Retrieved 2008-09-01.
Other websites[change | change source]
- Orbital simulation from JPL (Java) / Ephemeris
- Asteroid/Comet connection
- The Centaur Research Project
- an account of the naming
- Nessus in astrology
- Astrological keywords for Nessus