• Source: Chiron-type comet

A Chiron-type comet (CTC) is a member of a small family of comets defined as having a semi-major axis larger than that of Jupiter (5.2 AU) and a Tisserand's parameter with respect to Jupiter (TJupiter) of more than 3.
The family is named after its largest and most prominent member 2060 Chiron, officially designated as both a comet (95P/Chiron) and a minor planet of the centaur-class, which blurs the line between the two groups.
There are four numbered comets considered to be classical members of this family: 39P/Oterma, 165P/LINEAR, 166P/NEAT, and 167P/CINEOS.
CTCs are distinct from the Encke-type comets (ETC) and Jupiter-family comets (JFC). Contrary to the Chiron-type comets, JFCs have a TJupiter of less than 3 (typically with a period of less than 20 years), while the ETCs have a semi-major axis smaller than that of Jupiter. Another group, the Halley-type comets (HTC), only have a classical definition, that is a period between 20 and 200 years. Members of the CTC family have a dynamical lifetime of 6.5 million years, much longer than the 50,000 years attributed to the Jupiter-family comets.




References






External links


95P/Chiron - 2060 Chiron (1977 UB), Cometary behavior, Comet Countdown

Kata Kunci Pencarian:

• Chiron-type comet
• 2060 Chiron
• List of Halley-type comets
• List of numbered comets
• 167P/CINEOS
• 165P/LINEAR
• 166P/NEAT
• P/2020 MK4 (PanSTARRS)
• Comet
• List of Pan-STARRS discoveries