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]

Known quasi-Hilda comets

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]

References

  1. 1 2 3 4 5 Toth, I. (March 2006). "The quasi-Hilda subgroup of ecliptic comets - an update". Astronomy and Astrophysics. 448 (3): 1191–1196. Bibcode:2006A&A...448.1191T. doi:10.1051/0004-6361:20053492.
  2. ↑ Spratt, Christopher E. (December 1989). "The Hilda group of minor planets". Journal of the Royal Astronomical Society of Canada. 83: 393–404. Bibcode:1989JRASC..83..393S.
  3. ↑ Cheng, Y. -C.; Ip, W. -H. (2012-05-01). "Physical and dynamical properties of a quasi-Hilda comet , 212P/2000YN30". 1667: 6462. {{cite journal}}: Cite journal requires |journal= (help)
  4. ↑ García-Migani, E.; Gil-Hutton, R. (2018-10-01). "The activity and dynamical evolution of quasi-hilda asteroid (457175) 2008 GO98". Planetary and Space Science. 160: 12–18. doi:10.1016/j.pss.2018.03.011. ISSN 0032-0633.
  5. ↑ Chandler, Colin Orion; Oldroyd, William J.; Trujillo, Chadwick A. (2022-08-01). "Migratory Outbursting Quasi-Hilda Object 282P/(323137) 2003 BM80". {{cite journal}}: Cite journal requires |journal= (help)
  6. ↑ Jewitt, David; Kim, Yoonyoung (2020-12-01). "Outbursting Quasi-Hilda Asteroid P/2010 H2 (Vales)". The Planetary Science Journal. 1: 77. arXiv:2010.05012. doi:10.3847/PSJ/abbef6. ISSN 2632-3338.
  7. ↑ Oldroyd, William J.; Chandler, Colin Orion; Trujillo, Chadwick A.; Burris, William A.; Kueny, Jay K.; Hsieh, Henry H.; Farrell, Kennedy A.; DeSpain, Jarod A.; Mazzucato, Michele T.; Bosch, Milton K. D.; Shaw-Diaz, Tiffany; Gonano, Virgilio (2023-03-01). "Comet-like Activity Discovered on Quasi-Hilda Asteroid 2009 DQ118". Research Notes of the American Astronomical Society. 7: 42. doi:10.3847/2515-5172/acc17c. ISSN 2515-5172.
  8. ↑ Trujillo, Chadwick A.; Chandler, Colin Orion; Oldroyd, William J.; Burris, William A.; Hsieh, Henry H.; Kueny, Jay K.; Mazzucato, Michele T.; Bosch, Milton K. D.; Shaw-Diaz, Tiffany; Gonano, Virgilio (2023-05-26). "Cometary Activity on Quasi-Hilda Object 2018 CZ16". Research Notes of the AAS. 7 (5): 106. doi:10.3847/2515-5172/acd7f0. ISSN 2515-5172.
  9. ↑ Chandler, Colin Orion; Oldroyd, William J.; Trujillo, Chadwick A.; Burris, William A.; Hsieh, Henry H.; Kueny, Jay K.; Farrell, Kennedy A.; DeSpain, Jarod A.; Sedaghat, Nima; Magbanua, Mark Jesus Mendoza; Sheppard, Scott S.; Mazzucato, Michele T.; Bosch, Milton K. D.; Shaw-Diaz, Tiffany; Gonano, Virgilio (November 2023). "New Active Quasi-Hilda Asteroid 2004 CV50: A Citizen Science Discovery". Research Notes of the AAS. 7 (11): 237. doi:10.3847/2515-5172/ad09c1. ISSN 2515-5172.
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