122P/de Vico

Halley-type comet other comets of the same name Comet de Vico (disambiguation)Comet de Vico February 2020 122P/de Vico Francesco de Vico 20 February 1846 P/1846 D1P/1995 S1 1846 IV jpldata MPC 10 October 1995 (JD 2450000.5) 150–605 years 23 May 1391?Hasegawa_1979 441 0.659 AU 34.7 AU 17.68 AU 0.9627 74.36 years 85.39° 79.62° 12.98° 0.053° 0.375 0.317 AU 7.5 5.1(1995 apparition) 6 October 1995 14 October 2069 (JPL+Nakano)Horizons2069 NK724 21 October 2069 (Kinoshita+Yoshida)Yoshida Kinoshita 122P/de Vico is a Halley-type comet with an orbital period of 74 years. It was discovered by Francesco de Vico in Rome on 20 February 1846. It is expected to return to its next perihelion by October 2069.Horizons2069 NK724 Yoshida Kinoshita Observational history Discovery and loss During the 1846 apparition the comet reached a magnitude of 5 in mid March and was last observed in May. Its orbit was found to be elliptical and orbital calculations indicated that it would return between 1919 and 1925; however, the comet was not detected then.cometography Despite the lack of observations, Comet de Vico was expected to return by 1995 or 1996 based on available orbital calculations at the time.Machholz_1994 Recovery An apparently new comet was spotted on 17 September 1995 by the Japanese astronomers Yuji Nakamura, Masaaki Tanaka, and Shougo Utsunomiya, when it had an apparent magnitude of 7,IAUC_6228 while it was discovered independently within 24 hours by Tsutomu Seki and Don Machholz.Kronk Gary 122P/de Vico https://cometography.com/pcomets/122p.html cometography.com 13 March 2023 After its orbit was calculated, Brian G. Marsden, Gareth V. Williams and other astronomers have identified the comet as the rediscovery of the previously lost comet that Francesco de Vico first observed in 1846.IAUC_6232 By the end of September the comet had a magnitude of 5.5 and was visible by naked eye.IAUC_6239 It continued to brighten in the start of October, reaching a magnitude of 5.1 before starting to fade gradually.IAUC_6255 Its tail was reported to be up to seven degrees long.Shanklin J. D. The comets of 1995 Journal of the British Astronomical Association 1 December 2000 110 311 2000JBAA..110..311S https://articles.adsabs.harvard.edu/pdf/2000JBAA..110..311S 0007-0297 The comet was also observed by Ulysses spacecraft.Brandt_1997 It was last detected on 25 June 1996.cometography Orbit Comet 122P/de Vico completes a single orbit once every 74 years or so, which is inclined to the ecliptic by 85 degrees.jpldata Its closest approach to the Sun is about 0.66 AU e6km unit on every perihelion.Horizons2069 MPC The comet's minimum orbit intersection distance (MOID) to Earth is approximately 0.317 AU e6km unit.jpldata Daniel Kirkwood in 1884 noticed that the comet shares elements with comet 12P/Pons–Brooks. He suggested that 122P had calved off Pons–Brooks some centuries prior. Later he identified the two comets' capture into their elliptical orbits (or their parent body's capture) with their shared aphelion close to Neptune in 991 CE.Kirkwood_1886 In 1979, Ichiro Hasegawa tentatively identified a comet observed in May 1391 as a previous apparition of 122P.Hasegawa_1979 2069 122P/de Vico's next perihelion is predicted to occur around 14–21 October 2069.Yoshida Branham_2005 Horizons2069 NK724 It will pass about 0.8 AU e6km unit from Earth.Kinoshita Earth2069 On 30 December 2153, the comet will pass about 0.694 AU e6km unit from Uranus.jpldata Physical characteristics Chemical composition Spectroscopic observations taken from the McDonald Observatory in October 1995 has allowed the detection of various chemicals outgassing from the comet while it was 0.66 AU e6km unit from the Sun. Emission lines of carbon (C 2 and C 3), cyanogen (CN), hydrocarbon (CH), and amide (NH 2) molecules were detected.Cochran_2002 In addition, traces of carbon disulfide (CS 2) molecules were also detected in the ultraviolet and visible spectra,Jackson_2004 however nitrogen (N + 2) ions were noticeably not present in its coma.Cochran_2000 Spectroscopic measurements obtained from McDonald Observatory showed that its N14/N15 ratio (alongside that of 153P/Ikeya–Zhang) were approximately half the value to that of the Earth's atmosphere, noticeably different to those obtained from C/1995 O1 (Hale–Bopp) and C/2000 WM 1 (LINEAR), suggesting the existence of an unknown parent compound for the cyanogen (CN) commonly detected from comets.Jehin_2004 An independent spectroscopic observation from the Bisei Astronomical Observatory has determined that 122P/de Vico is one of the most gas-rich comets ever known.Kawakita_1998 Although its chemical composition is roughly similar to 1P/Halley (including its observed two-way rotational temperature of detected carbon molecules),Nelson_2018 its gas-to-dust ratio is 10 times higher, which is comparable to that of 23P/Brorsen–Metcalf.Kawakita_1998 Potential meteor shower Analysis of data from Ulysses and the Pioneer Venus Orbiter detected distortions on the interplanetary magnetic field that were consistent with the crossing of Venus into a dense dust trail associated with 122P/de Vico,Jones_2003 potentially even producing meteor showers on the planet itself.Christou_2004 References J. C. Brandt Y. Yi C. C. Petersen M. Snow Comet de Vico (122P) and latitude variations of plasma phenomena Planetary and Space Science 1997 45 7 813–819 1997P&SS...45..813B 10.1016/S0032-0633(97)00049-4 R. L. Branham Jr. Orbit of Comet 122P/de Vico https://www.astroscu.unam.mx/rmaa/RMxAA..41-1/PDF/RMxAA..41-1_rbranham.pdf Revista Mexicana de Astronomía y Astrofísica 2005 41 1 87–100 2005RMxAA..41...87B 0185-1101 A. A. Christou Prospects for meteor shower activity in the venusian atmosphere Icarus 2004 168 1 23–33 2004Icar..168...23C 10.1016/j.icarus.2003.12.006 A. L. Cochran W. D. Cochran E. S. Barker N + 2 and CO + in Comets 122P/1995 S1 (deVico) and C/1995 O1 (Hale–Bopp) Icarus 2000 146 2 583–593 2000Icar..146..583C astro-ph/0003122 10.1006/icar.2000.6413 A. L. Cochran W. D. Cochran A High Spectral Resolution Atlas of Comet 122P/de Vico Icarus 2002 157 2 297–308 2002Icar..157..297C astro-ph/0202038 10.1006/icar.2002.6850 I. Hasegawa Orbits of Ancient and Medieval Comets Publications of the Astronomical Society of Japan 1979 31 257–270 1979PASJ...31..257H 0004-6264 Y. Nakamura M. Tanaka S. Utsunomiya etal D. W. Green Comet 1995 S1 http://www.cbat.eps.harvard.edu/iauc/06200/06228.html IAU Circular 1995-09-15 6228 1 1995IAUC.6228....1N R. J. Buckner B. G. Marsden G. V. Williams D. W. Green Comet P/1995 S1 P/1846 D1 (de Vico) http://www.cbat.eps.harvard.edu/iauc/06200/06232.html IAU Circular 1995-09-20 6239 1 1995IAUC.6232....1B A. Dimai W. Dillon K. Sarneczky etal D. W. Green Comet P/1995 S1 (de Vico) http://www.cbat.eps.harvard.edu/iauc/06200/06239.html IAU Circular 1995-09-29 6239 3 1995IAUC.6239....3D R. Haver A. Hale R. Keen etal D. W. Green Comet 122P/de Vico http://www.cbat.eps.harvard.edu/iauc/06200/06255.html IAU Circular 1995-11-02 6255 3 1995IAUC.6255....3H W. M. Jackson A. Scodinu D. Xu A. L. Cochran Using the Ultraviolet and Visible spectrum of Comet 122P/de Vico to Identify the Parent Molecule CS 2 The Astrophysical Journal 2004 607 2 139–141 2004ApJ...607L.139J 10.1086/421995 free E. Jehin J. Manfroid A. L. Cochran etal The Anomalous 14N/15N Ratio in Comets 122P/1995 S1 (de Vico) and 153P/2002 C1 (Ikeya–Zhang) The Astrophysical Journal 2004 613 2 161–164 2004ApJ...613L.161J 10.1086/425254 free G. H. Jones A. Balogh C. T. Russell M. K. Dougherty Possible Distortion of the Interplanetary Magnetic Field by the Dust Trail of Comet 122P/de Vico The Astrophysical Journal 2003 597 1 61–64 2003ApJ...597L..61J 10.1086/379750 free 122P/de Vico – JPL Small-Body Database Lookup https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=122P&view=OPC ssd.jpl.nasa.gov Jet Propulsion Laboratory 2012-07-26 H. Kawakita K. Ayani K. Matsubara Spectroscopic Observation of Comet P/de Vico: Comparison with P/Halley and P/Brorsen–Metcalf Publications of the Astronomical Society of Japan 1998 50 343–347 1998PASJ...50..343K 10.1093/pasj/50.3.343 free D. Kirkwood The Comets 1812 I, and 1846 IV The Sidereal Messenger 1886 5 13–14 1886SidM....5...13K D. E. Machholz The upcoming apparition of Periodic Comet de Vico (1846 IV) Journal of the Association of Lunar and Planetary Observers 1994 38 1 11–18 1994JALPO..38...11M 0039-2502 122P/de Vico Orbit http://www.minorplanetcenter.net/db_search/show_object?object_id=122P Minor Planet Center 2014-06-17 T. Nelson A. L. Cochran C. Western Rotational Temperature Modeling of the Swan Δν 0 Band Sequence in Comet 122P/de Vico https://research-information.bris.ac.uk/files/173757641/NelsonPrePrint.pdf The Journal of Physical Chemistry A 2018 122 40 8020–8025 2018JPCA..122.8020N 1809.07715 10.1021/acs.jpca.8b07441 free S. Yoshida 122P/de Vico http://www.aerith.net/comet/catalog/0122P/index.html www.aerith.net 2005-11-09 2012-02-20 122P/de Vico past, present and future orbital elements http://jcometobs.web.fc2.com/pcmtn/0122p.htm Comet Orbit Kazuo Kinoshita 1998-01-27 2026-01-16 19 November 1999 122P/de Vico (NK 724) OAA Computing and Minor Planet Sections Syuichi Nakano Syuichi Nakano http://www.oaa.gr.jp/~oaacs/nk/nk724.htm 2 February 2012 Horizons Batch for 122P/de Vico (90001021) on 2069-Oct-14 JPL Horizons Perihelion occurs when rdot flips from negative to positive https://ssd.jpl.nasa.gov/api/horizons.api?format=text&COMMAND=%27DES%3D122P%3BCAP%27&START_TIME=%272069-Oct-11%2000:15%27&STOP_TIME=%272069-Oct-18%27&STEP_SIZE=%2712%20hours%27&QUANTITIES=%2719%27 2026-04-16 (JPL#27 Soln.date: 2001-Jul-02) Earth approach for 122P/de Vico (90001021) on 2069-Oct-18 JPL Horizons https://ssd.jpl.nasa.gov/api/horizons.api?format=text&COMMAND=%27DES%3D122P%3BCAP%27&START_TIME=%272069-Oct-18%2000:27%27&STOP_TIME=%272069-Oct-18%2009%27&STEP_SIZE=%271%20hour%27&QUANTITIES=%2720%27 2026-04-16 (JPL#27 Soln.date: 2001-Jul-02) External links 1000156 122P 122P/de Vico at the Minor Planet Center database 122P/de Vico at Kazuo Kinoshita's website (27 January 1998) 121P/Shoemaker–Holt 123P/West–Hartley Category:Periodic comets 122P 122P 122P * * *