Quasi-Hilda comet

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	Nucleus radii	Aphelion (Q)	Eccentricity	Inclination	Perihelion date
36P/Whipple	2.55 km [3]	5.27	0.261	9.92	2011-12-29
74P/Smirnova–Chernykh	2.23 km [4]	4.78	0.147	6.65	2009-07-26
82P/Gehrels	0.71 km [5]	4.65	0.122	1.12	2010-01-12
111P/Helin–Roman–Crockett	0.46–1.39 km [6]	4.61	0.140	4.23	2013-01-30
117P/Helin–Roman–Alu	16.4 km [7]	5.13	0.253	8.69	2014-03-28
129P/Shoemaker–Levy	1.65 km [8]	4.85	0.170	3.29	2014-02-07
135P/Shoemaker–Levy	1.38 km [9]	4.93	0.289	6.05	2014-11-01
147P/Kushida–Muramatsu	0.22 km [5]	4.85	0.276	2.36	2008-09-22
212P/NEAT (2000 YN30) [10]	–	6.20	0.579	22.4	2008-12-03
215P/NEAT (2002 O8)	1.825 km [11]	4.83	0.200	12.7	2010-06-06
228P/LINEAR (2001 YX127)	2.41 km [8]	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)	1.01 km [11]	5.17	0.286	15.9	2013-01-28
282P/2003 BM80 [12]	–	5.04	0.188	5.81	2021-10-24
362P/2008 GO98 [13]	–	5.08	0.279	15.6	2024-07-20

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), ^[14] 2009 DQ118 , ^[15] 2018 CZ18 ^[16] and 2004 CV50 . ^[17]

References

1. I. Toth (2006). "The quasi-Hilda subgroup of ecliptic comets – an update" (PDF). Astronomy and Astrophysics. 448 (3): 1191–1196. Bibcode:2006A&A...448.1191T. doi: 10.1051/0004-6361:20053492 .
2. C. E. Spratt (1989). "The Hilda group of minor planets". Journal of the Royal Astronomical Society of Canada. 83: 393–404. Bibcode:1989JRASC..83..393S.
3. C. Snodgrass; A. Fitzsimmons; S. C. Lowry; P. Weissman (2011). "The size distribution of Jupiter Family comet nuclei" (PDF). Monthly Notices of the Royal Astronomical Society. 414 (1): 458–469. arXiv: 1101.4228 . Bibcode:2011MNRAS.414..458S. doi: 10.1111/j.1365-2966.2011.18406.x .
4. P. L. Lamy; I. Toth; Y. R. Fernández; H. A. Weaver (2004). "The Sizes, Shapes, Albedos, and Colors of Cometary Nuclei" (PDF). Comets II. University of Arizona Press. pp. 223–264. Bibcode:2004come.book..223L. doi:10.2307/j.ctv1v7zdq5.22. ISBN   978-0-8165-2450-1. JSTOR   j.ctv1v7zdq5.22. Archived from the original (PDF) on 2022-10-09. Retrieved 2025-11-22.
5. P. L. Lamy; I. Toth; H. A. Weaver; M. F. A'Hearn; L. Jorda (2011). "Properties of the nuclei and comae of 10 ecliptic comets from Hubble Space Telescope multi-orbit observations" (PDF). Monthly Notices of the Royal Astronomical Society. 412 (3): 1573–1590. Bibcode:2011MNRAS.412.1573L. doi: 10.1111/j.1365-2966.2010.17934.x .
6. E. M. Epifani; P. Palumbo; M. T. Capria; et al. (2007). "The distant activity of Short Period Comets*– I". Monthly Notices of the Royal Astronomical Society. 381 (2): 713–722. Bibcode:2007MNRAS.381..713M. doi: 10.1111/j.1365-2966.2007.12181.x .
7. E. M. Epifani; P. Palumbo; M. T. Capria; et al. (2008). "The distant activity of Short Period Comets*– II". Monthly Notices of the Royal Astronomical Society. 390 (1): 265–280. Bibcode:2008MNRAS.390..265M. doi: 10.1111/j.1365-2966.2008.13718.x .
8. Y. R. Fernández; M. S. P. Kelley; P. L. Lamy; et al. (2013). "Thermal properties, sizes, and size distribution of Jupiter-family cometary nuclei". Icarus. 226 (1): 1138–1170. arXiv: 1307.6191 . Bibcode:2013Icar..226.1138F. doi:10.1016/j.icarus.2013.07.021.
9. G. Tancredi; J. A. Fernández; H. Rickman; J. Licandro (2006). "Nuclear magnitudes and the size distribution of Jupiter family comets". Icarus. 182 (2): 527–549. Bibcode:2006Icar..182..527T. doi:10.1016/j.icarus.2006.01.007.
10. Y. C. Cheng; W. H. Ip (16–20 May 2012). Physical and dynamical properties of a quasi-Hilda comet, 212P/2000 YN₃₀. Asteroids, Comets, Meteors. Vol. 1667. Niigata, Japan. p. 6462. Bibcode:2012LPICo1667.6462C.
11. J. M. Bauer; T. Grav; Y. R. Fernández; et al. (2017). "Debiasing the NEOWISE Cryogenic Mission Comet Populations". The Astronomical Journal. 154 (2): 53–62. Bibcode:2017AJ....154...53B. doi: 10.3847/1538-3881/aa72df .
12. C. O. Chandler; W. J. Oldroyd; C. A. Trujillo (2022). "Migratory Outbursting Quasi-Hilda Object 282P/(323137) 2003 BM₈₀". The Astrophysical Journal. 937 (1): L2. arXiv: 2208.08592 . Bibcode:2022ApJ...937L...2C. doi: 10.3847/2041-8213/ac897a .
13. E. García-Migani; R. Gil-Hutton. "The activity and dynamical evolution of quasi-hilda asteroid (457175) 2008 GO₉₈". Planetary and Space Science. 160: 12–18. Bibcode:2018P&SS..160...12G. doi:10.1016/j.pss.2018.03.011. ISSN   0032-0633.
14. D. C. Jewitt; Y. Kim (2020). "Outbursting Quasi-Hilda Asteroid P/2010 H2 (Vales)". The Planetary Science Journal. 1 (3): 77. arXiv: 2010.05012 . Bibcode:2020PSJ.....1...77J. doi: 10.3847/PSJ/abbef6 . ISSN   2632-3338.
15. W. J. Oldroyd; C. O. Chandler; C. A. Trujillo; et al. "Comet-like Activity Discovered on Quasi-Hilda Asteroid 2009 DQ₁₁₈". Research Notes of the American Astronomical Society. 7 (3): 42. Bibcode:2023RNAAS...7...42O. doi: 10.3847/2515-5172/acc17c . ISSN   2515-5172.
16. C. A. Trujillo; C. O. Chandler; W. J. Oldroyd; et al. (2023). "Cometary Activity on Quasi-Hilda Object 2018 CZ₁₆". Research Notes of the American Astronomical Society. 7 (5): 106. Bibcode:2023RNAAS...7..106T. doi: 10.3847/2515-5172/acd7f0 . ISSN   2515-5172.
17. C. O. Chandler; W. J. Oldroyd; C. A. Trujillo; et al. (2023). "New Active Quasi-Hilda Asteroid 2004 CV₅₀: A Citizen Science Discovery". Research Notes of the American Astronomical Society. 7 (11): 237. Bibcode:2023RNAAS...7..237C. doi: 10.3847/2515-5172/ad09c1 . ISSN   2515-5172.