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185P/Petriew
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Jupiter-family comet
October 2026
185P/Petriew IAUC_7686 Petriew_2002 Vance Avery Petriew Cypress Hills, Canada 18 August 2001 P/2001 Q2, P/2007 A3 jpldata MPC 21 November 2025 (JD 2461000.5) 22.65 yearsobs_arc 12 June 2001 1,272 0.932 AU 5.268 AU 3.100 AU 0.69926 5.458 years 14.006° 214.12° 181.92° 155.71° 2.750 0.061 AU 0.178 AU jpldata <5.7 km miPozuelos_2014 13.6 16.7 12 July 2023 26 December 2028
185P/Petriew is a Jupiter-family comet with a 5.46-year orbit around the Sun. It was discovered by amateur astronomer Vance Avery Petriew on 18 August 2001.Petriew_2002
Observational history
Vance Avery Petriew discovered the comet visually with a 0.51-m reflector telescope during a star party in Cypress Hills, Canada, on 18 August 2001, while he was searching for the Crab Nebula.cometography Petriew initially mistook the object as an unidentified galaxy, until Richard Huziak recognized it as a comet.Huziak_2002 He became the third Canadian amateur astronomer to discover a comet.cbc1 Petriew estimated that the comet had an apparent magnitude of 11, a coma about three arcminutes across and no tail.IAUC_7686 For his discovery, V. A. Petriew was awarded the Edgar Wilson Award in 2002.IAUC_7926 The comet was also observed by other participants of the party. Alan Hale imaged the comet with a CCD on 19 August and estimated the comet had an apparent magnitude of about 13.IAUC_7686
The comet continued to brighten during August, reaching magnitude 9.5.IAUC_7720 The coma diameter was reported to be 2 to 4 arcminutes. No tail was observed visually, but CCD imaging revealed the presence of a narrow tail.cometography The comet was observed spectographically in September 2001 and was found to have normal production rates of diatomic carbon and water for a Halley-type comet.Hicks_2002 The comet was quickly found to be periodic, with a period of about 5.5 years.IAUC_7688 The comet had approached Jupiter to a distance of 0.146 AU e6km unit on 3 July 1982,IAUC_7688 and as a result its perihelion distance was decreased from 1.37 AU to 1.00 AU.cometography
The comet was recovered on 11 January 2007 by F. Fratev, E. Mihaylova, and A. Kirchev using a 0.25m reflector telescope at Zvezdno Obshtestvo Observatory in Plana, Bulgaria. The comet then had an apparent magnitude of 16.1 and a diffuse coma 0.2 arcminutes across.IAUC_8795 After recovery, the comet was given the number 185P.IAUC_8803
Meteor showers
185P/Petriew could be the parent body of a meteor shower that was first observed on 26–27 October 2024 with a radiant in Lyra.CBET_5469 CBET_5470
Notes
"obs_arc" Observation arc from the Minor Planet Center database covering dates from 12 June 2001 until 6 February 2024.
References
Newest comet named for Saskatchewan man https://www.cbc.ca/news/science/newest-comet-named-for-saskatchewan-man-1.279361 CBC News 2001-08-23 2024-11-03
D. Vida D. Segon D. W. Green New Meteor Shower M2024-U1 in Lyra http://www.cbat.eps.harvard.edu/iau/cbet/005400/CBET005469.txt Central Bureau Electronic Telegrams 2024-11-03 5469 1 2024CBET.5469....1V
D. Vida D. Segon D. W. Green New Meteor Shower M2024-U1 in Lyra http://www.cbat.eps.harvard.edu/iau/cbet/005400/CBET005470.txt Central Bureau Electronic Telegrams 2024-11-03 5470 1 2024CBET.5470....1V
G. W. Kronk 185P/Petriew https://cometography.com/pcomets/185p.html Cometography.com 2024-11-03
M. D. Hicks B. J. Buratti Long-slit spectrophotometry of P/Borrelly near the time of the Deep Space 1 encounter Asteroids, Comets, Meteors Berlin, Germany 29 July 2002 500 665–668 2002ESASP.500..665H 92-9092-810-7
R. Huziak The Challenge of Bagging Comet Petriew Journal of the Royal Astronomical Society of Canada 2002 96 15–17 2002JRASC..96...15H
R. Huziak P. Campbell A. Hale etal D. W. Green Comet 2001 Q2 http://www.cbat.eps.harvard.edu/iauc/07600/07686.html IAU Circular 2001-08-19 7686 1 2001IAUC.7686....1H 0081-0304
B. G. Marsden S. Nakano D. W. Green Comet P/2001 Q2 (Petriew) http://www.cbat.eps.harvard.edu/iauc/07600/07688.html IAU Circular 2001-08-21 7688 1 2001IAUC.7688....1M 0081-0304
M. V. Zanotta K. Hornoch D. A. J. Seargent D. W. Green Comet P/2001 Q2 (Petriew) http://www.cbat.eps.harvard.edu/iauc/07700/07720.html IAU Circular 2001-09-19 7926 3 2001IAUC.7720....3Z 0081-0304
K. Ikeya D. W. Green The Edgar Wilson Award http://www.cbat.eps.harvard.edu/iauc/07900/07926.html IAU Circular 2002-06-24 7926 3 2002IAUC.7926....3I 0081-0304
F. Fratev E. Mihaylova A. Kirchev D. W. Green Comet P/2007 A3 (Petriew) http://www.cbat.eps.harvard.edu/iauc/08700/08795.html IAU Circular 2007-01-14 8795 1 2007IAUC.8795....1F 0081-0304
D. W. Green Comets 184P/Lovas and 185P/Petriew http://www.cbat.eps.harvard.edu/iauc/08800/08803.html IAU Circular 2007-02-06 8803 4 2007IAUC.8803....4G 0081-0304
185P/Petriew – JPL Small-Body Database Lookup https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=185P ssd.jpl.nasa.gov Jet Propulsion Laboratory 2024-11-03
185P/Petriew Orbit http://www.minorplanetcenter.net/db_search/show_object?object_id=185P Minor Planet Center 2026-10-13
V. A. Petriew Comet Petriew Discovery Journal of the Royal Astronomical Society of Canada 2002 96 9–15 2002JRASC..96....9P
F. J. Pozuelos F. Moreno F. Aceituno V. Casanova A. Sota etal Dust environment and dynamical history of a sample of short-period comets https://www.aanda.org/articles/aa/pdf/2014/08/aa23762-14.pdf Astronomy & Astrophysics 2014 568 3–16 2014A&A...568A...3P 1406.6220 10.1051/0004-6361/201423762 10261/395461 free
External links
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185P 185P/Petriew at the Minor Planet Center database
185P/Petriew at Seiichi Yoshida's website
The Discovery of Comet Petriew at Vance Petriew's website
184P/Lovas 186P/Garradd
Category:Periodic comets
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