Damocloid asteroid
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Damocloids are a class of minor planets such as 5335 Damocles and 1996 PW that have Halley-type or long-period highly eccentric orbits typical of periodic comets such as Halley's Comet, but without showing a cometary coma or tail. David C. Jewitt defines a damocloid as an object with a Jupiter Tisserand invariant (TJ) of 2 or less, while Akimasa Nakamura defines this group with the following orbital elements: q 8.0 AU, and e > 0.75, or alternatively, i > 90°
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Encyclopedic overview
6 sectionsContents
- Origin
- {{anchor|List of damocloids}} List
- See also
- Notes
- References
- External links
Damocloids are a class of minor planets such as 5335 Damocles and 1996 PW that have Halley-type or long-period highly eccentric orbits typical of periodic comets such as Halley's Comet, but without showing a cometary coma or tail. David C. Jewitt defines a damocloid as an object with a Jupiter Tisserand invariant (TJ) of 2 or less, while Akimasa Nakamura defines this group with the following orbital elements: q 8.0 AU, and e > 0.75, or alternatively, i > 90°
However, this definition that does not focus on Jupiter excludes objects such as , , and .
Excerpted from Wikipedia’s “Damocloid asteroid” article, available under the CC BY-SA 4.0 licence.