A quasi-Hilda comet (QHC) is a Jupiter-family comet that interacts strongly with Jupiter and undergoes extended temporary capture by it. These comets are associated with the Hilda asteroid zone in the 3:2 inner mean-motion resonance with Jupiter. Typically, asteroids in this zone have a semimajor axis between 3.70 and 4.20 AU, eccentricities below 0.30, and inclinations of no more than 20°. [1] Comets can be temporarily perturbed into this group and then perturbed back out again. [2] Eight percent of the comets that leave the 3:2 resonance end up impacting Jupiter. [1]
These numbered comets belong to the group of quasi-Hilda comet: [1]
Full Name |
Aphelion (Q) |
Eccentricity |
Inclination |
Perihelion date |
---|---|---|---|---|
36P/Whipple | 5.27 | 0.261 | 9.92 | 2011-12-29 |
74P/Smirnova–Chernykh | 4.78 | 0.147 | 6.65 | 2009-07-26 |
82P/Gehrels | 4.65 | 0.122 | 1.12 | 2010-01-12 |
111P/Helin–Roman–Crockett | 4.61 | 0.140 | 4.23 | 2013-01-30 |
117P/Helin–Roman–Alu | 5.13 | 0.253 | 8.69 | 2014-03-28 |
129P/Shoemaker–Levy | 4.85 | 0.170 | 3.29 | 2014-02-07 |
135P/Shoemaker–Levy | 4.93 | 0.289 | 6.05 | 2014-11-01 |
147P/Kushida–Muramatsu | 4.85 | 0.276 | 2.36 | 2008-09-22 |
215P/NEAT (2002 O8) | 4.83 | 0.200 | 12.7 | 2010-06-06 |
228P/LINEAR (2001 YX127) | 4.89 | 0.176 | 7.91 | 2011-08-26 |
231P/LINEAR-NEAT (2003 CP7) | 5.01 | 0.246 | 12.3 | 2011-05-16 |
246P/NEAT (2004 F3) | 5.17 | 0.286 | 15.9 | 2013-01-28 |
212P/NEAT (2000 YN30) [3] | 6.20 | 0.579 | 22.4 | 2008-12-03 |
362P/(457175) 2008 GO98 [4] | 5.08 | 0.279 | 15.6 | 2024-07-20 |
282P/(323137) 2003 BM80 [5] | 5.04 | 0.188 | 5.81 | 2021-10-24 |
39P/Oterma was a quasi-Hilda before a close approach to Jupiter in 1963. [1] 77P/Longmore falls outside of the bulk distribution because of its large eccentricity and inclination. [1] Comet Shoemaker–Levy 9 impacted with Jupiter in 1994.
Not numbered comets claimed to be quasi-Hilda object with comet activity are P/2010 H2 (Vales), [6] 2009 DQ118, [7] 2018 CZ18 [8] and 2004 CV50. [9]
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A quasi-Hilda comet (QHC) is a Jupiter-family comet that interacts strongly with Jupiter and undergoes extended temporary capture by it. These comets are associated with the Hilda asteroid zone in the 3:2 inner mean-motion resonance with Jupiter. Typically, asteroids in this zone have a semimajor axis between 3.70 and 4.20 AU, eccentricities below 0.30, and inclinations of no more than 20°. [1] Comets can be temporarily perturbed into this group and then perturbed back out again. [2] Eight percent of the comets that leave the 3:2 resonance end up impacting Jupiter. [1]
These numbered comets belong to the group of quasi-Hilda comet: [1]
Full Name |
Aphelion (Q) |
Eccentricity |
Inclination |
Perihelion date |
---|---|---|---|---|
36P/Whipple | 5.27 | 0.261 | 9.92 | 2011-12-29 |
74P/Smirnova–Chernykh | 4.78 | 0.147 | 6.65 | 2009-07-26 |
82P/Gehrels | 4.65 | 0.122 | 1.12 | 2010-01-12 |
111P/Helin–Roman–Crockett | 4.61 | 0.140 | 4.23 | 2013-01-30 |
117P/Helin–Roman–Alu | 5.13 | 0.253 | 8.69 | 2014-03-28 |
129P/Shoemaker–Levy | 4.85 | 0.170 | 3.29 | 2014-02-07 |
135P/Shoemaker–Levy | 4.93 | 0.289 | 6.05 | 2014-11-01 |
147P/Kushida–Muramatsu | 4.85 | 0.276 | 2.36 | 2008-09-22 |
215P/NEAT (2002 O8) | 4.83 | 0.200 | 12.7 | 2010-06-06 |
228P/LINEAR (2001 YX127) | 4.89 | 0.176 | 7.91 | 2011-08-26 |
231P/LINEAR-NEAT (2003 CP7) | 5.01 | 0.246 | 12.3 | 2011-05-16 |
246P/NEAT (2004 F3) | 5.17 | 0.286 | 15.9 | 2013-01-28 |
212P/NEAT (2000 YN30) [3] | 6.20 | 0.579 | 22.4 | 2008-12-03 |
362P/(457175) 2008 GO98 [4] | 5.08 | 0.279 | 15.6 | 2024-07-20 |
282P/(323137) 2003 BM80 [5] | 5.04 | 0.188 | 5.81 | 2021-10-24 |
39P/Oterma was a quasi-Hilda before a close approach to Jupiter in 1963. [1] 77P/Longmore falls outside of the bulk distribution because of its large eccentricity and inclination. [1] Comet Shoemaker–Levy 9 impacted with Jupiter in 1994.
Not numbered comets claimed to be quasi-Hilda object with comet activity are P/2010 H2 (Vales), [6] 2009 DQ118, [7] 2018 CZ18 [8] and 2004 CV50. [9]
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