Damocloid asteroid in the context of Halley-type comet

Damocloid asteroid in the context of Halley-type comet

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⭐ Core Definition: Damocloid asteroid

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 < 5.2 AU, a > 8.0 AU, and e > 0.75,
  • or alternatively, i > 90°

However, this definition that does not focus on Jupiter excludes objects such as (127546) 2002 XU93, 2003 WG166, and (661238) 2004 DA62.

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Damocloid asteroid in the context of Solar System object

The following is a list of Solar System objects by orbit, ordered by increasing distance from the Sun. Most named objects in this list have a diameter of 500 km or more.

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LINKS TO (CHILDREN)
List of minor-planet groups → Minor planet → 5335 Damocles → 1996 PW → Halley-type comet → Eccentric orbit → Comet → Halley's Comet → Coma (cometary) → Comet tail → David C. Jewitt → Jupiter Tisserand invariant → Akimasa Nakamura → Orbital elements → Perihelion → Astronomical unit → Semi-major axis → Orbital eccentricity → Orbital inclination → Degree (angle) → (127546) 2002 XU93 →