168P/Hergenrother is a periodiccomet in the Solar System. The comet originally named P/1998 W2 returned in 2005 and got the temporary name P/2005 N2.[4] The comet was last observed in January 2020,[1] and may have continued fragmenting after the 2012 outburst.
The comet came to perihelion on October 1, 2012,[3] and was expected to reach about apparent magnitude 15.2, but due to an outburst the comet reached apparent magnitude 8.[5] As a result of the outburst of gas and dust, the comet was briefly more than 500 times brighter than it would have been without the outburst.[6] On October 19, 2012, images by the Virtual Telescope Project showed a dust cloud trailing the nucleus.[7] Images by the 2 m (79 in) Faulkes Telescope North on October 26, 2012, confirm a fragmentation event.[8] The secondary fragment was about magnitude 17. Further observations by the 8.1 m (320 in) Gemini telescope show that the comet fragmented into at least four parts.[9]
2019
168P came to perihelion on August 5, 2019,[1] when it was 76 degrees from the Sun. It then made a closest approach to Earth on 6 November 6, 2019, when it was 1 AU (150 million km) from Earth with a solar elongation of about 110 degrees. It was not recovered until January 3, 2020, when it was 141 degrees from the Sun, but only two observations on a single night were reported.
168p, hergenrother, periodic, comet, solar, system, comet, originally, named, 1998, returned, 2005, temporary, name, 2005, comet, last, observed, january, 2020, have, continued, fragmenting, after, 2012, outburst, during, 2012, outburst, mount, lemmon, observa. 168P Hergenrother is a periodic comet in the Solar System The comet originally named P 1998 W2 returned in 2005 and got the temporary name P 2005 N2 4 The comet was last observed in January 2020 1 and may have continued fragmenting after the 2012 outburst 168P Hergenrother168P Hergenrother during its 2012 outburst By Mount Lemmon Observatory DiscoveryDiscovered byCarl W HergenrotherDiscovery dateNovember 22 1998DesignationsAlternative designationsP 1998 W2P 2005 N2Orbital characteristicsEpochMarch 6 2006Aphelion5 839 AUPerihelion1 426 AUSemi major axis3 632 AUEccentricity0 6075Orbital period6 923 aInclination21 8934 Last perihelionAugust 5 2019 1 2 October 1 2012 3 November 2 2005Next perihelion2026 May 18 1 Earth MOID0 4 AU 60 million km Contents 1 2012 outburst 2 2019 3 References 4 External links2012 outburst EditThe comet came to perihelion on October 1 2012 3 and was expected to reach about apparent magnitude 15 2 but due to an outburst the comet reached apparent magnitude 8 5 As a result of the outburst of gas and dust the comet was briefly more than 500 times brighter than it would have been without the outburst 6 On October 19 2012 images by the Virtual Telescope Project showed a dust cloud trailing the nucleus 7 Images by the 2 m 79 in Faulkes Telescope North on October 26 2012 confirm a fragmentation event 8 The secondary fragment was about magnitude 17 Further observations by the 8 1 m 320 in Gemini telescope show that the comet fragmented into at least four parts 9 2019 Edit168P came to perihelion on August 5 2019 1 when it was 76 degrees from the Sun It then made a closest approach to Earth on 6 November 6 2019 when it was 1 AU 150 million km from Earth with a solar elongation of about 110 degrees It was not recovered until January 3 2020 when it was 141 degrees from the Sun but only two observations on a single night were reported References Edit a b c d 168P Hergenrother Orbit Minor Planet Center Retrieved 2014 06 20 Syuichi Nakano 2012 07 17 168P Hergenrother NK 2283 OAA Computing and Minor Planet Sections Retrieved 2012 10 13 a b Syuichi Nakano 2009 04 23 168P Hergenrother NK 1778 OAA Computing and Minor Planet Sections Retrieved 2012 02 20 IAUC 8560 recovery of comet P 1998 W2 Seiichi Yoshida 2012 02 21 168P Hergenrother 2012 Seiichi Yoshida s Comet Catalog Retrieved 2012 02 25 Math 100 5 15 2 8 758 displaystyle sqrt 5 100 15 2 8 approx 758 Gianluca Masi October 19 2012 Comet 168P Hergenrother hi res images 19 Oct 2012 Virtual Telescope Project Retrieved 2016 10 18 Giovanni Sostero Nick Howes Ernesto Guido October 26 2012 Splitting event in comet 168P Hergenrother Remanzacco Observatory in Italy Comets amp Neo Retrieved 2012 10 28 Phil Plait 2012 11 05 Breaking up is easy to do If you re a comet Bad Astronomy Retrieved 2012 11 05 External links Edit168P on Seiichi Yoshida s comet list Elements and Ephemeris for 168P Hergenrother Minor Planet Center 168P at Kronk s Cometography Comet 168P Hergenrother in outburst Google chat archive Oct 12 2012 Comet Hergenrother in Outburst Carl Hergenrother 20 Oct 2012 Comet 168P and fragment as seen by Kitt Peak WIYN 3 5 metre 140 in on 30 Oct 2012 Scientists Monitor Comet Breakup 168P Hergenrother was imaged by the NOAO Gemini telescope Nov 2 2012 Temporal Correlation Between Outbursts and Fragmentation Events of Comet 168P Hergenrother arXiv 1409 7641 26 Sep 2014 Numbered cometsPrevious167P CINEOS 168P Hergenrother Next169P NEAT Retrieved from https en wikipedia org w index php title 168P Hergenrother amp oldid 1142319651, wikipedia, wiki, book, books, library,
