105P/Singer Brewster

Periodic comet with 6 year orbit November 2012 105P/Singer Brewster 105P 2018-05-19 image ZTF-sso-473-zr-fov-2.8arcmin.png Stephen Singer-Brewster May 3, 1986 1986 XI; 1992 XXVI 2011-Feb-08(JD 2455600.5) 3.4709 AU 2.0502 AU 4.8915 AU 0.40929 6.47 yr 9.1706° 2025-Jan-22105p2018-Aug-10February 26, 2012September 11, 2005 2031-Jul-11Horizons2031 105P/Singer Brewster is a periodic comet in the Solar System. It was discovered in 1986, and received the name of 1986d under the old naming system. Because 105P/Singer Brewster only comes within 2 AU of the Sun, during the 2012 perihelion passage it is only expected to brighten to about apparent magnitude 17. The comet nucleus is estimated to be 2.2 kilometers in diameter. The orbit of Comet Singer Brewster was altered significantly in August 1976 when it passed within 0.376 AU of Jupiter and will be altered again in August 2059. The single discoverer bears a hyphenated surname (Singer-Brewster), but co-discovered comets bear the names of the co-discoverers linked by hyphens, e.g. Shoemaker-Levy 9, Swift-Tuttle, etc. In these cases, the IAU either removes one of the parts of the name or replaces the hyphen by a space.IAU Comet-naming Guidelines International Astronomical Union http://www.cbat.eps.harvard.edu/cometnameg.html dead https://web.archive.org/web/20160304050435/https://www.cbat.eps.harvard.edu/cometnameg.html March 4, 2016 mdy Journal of the Association of Lunar and Planetary Observers Comet Corner http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?journal=JALPO&year=%3f%3f%3f%3f&volume=..33&letter=.&db_key=GEN&page_ind=26&plate_select=NO&data_type=GIF&type=SCREEN_GIF&classic=YES Don E. Machholz Donald Machholz 33 25–28, 26 1 1989 A hyphen (-) is used in a comet's name only to separate the discoverers. Thus, when sometimes the discover has a double name, the hyphen is dropped from the comet's name in order to show that there was only one discoverer. For example, in 1986 Stephen Singer-Brewster discovered a comet. It is known as "Comet Singer Brewster." 1989JALPO..33...25M References 2011-02-19 105P/Singer Brewster Seiichi Yoshida's Comet Catalog Seiichi Yoshida http://www.aerith.net/comet/catalog/0105P/index.html 2011-05-03 https://web.archive.org/web/20110427031539/http://aerith.net/comet/catalog/0105P/index.html April 27, 2011 2009-04-21 105P/Singer Brewster (NK 1762) OAA Computing and Minor Planet Sections Syuichi Nakano Syuichi Nakano http://www.oaa.gr.jp/~oaacs/nk/nk1762.htm 2011-05-03 2011-02-05 JPL Small-Body Database Browser: 105P/Singer Brewster http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=105P 2011-05-03 Excerpts from the IAU circulars, May 3, 1986, in Stardust June 1986, issue 10, volume XLII, published by National Capital Astronomers Magnitude plot for 105P/Singer Brewster in 2012 Comet for Windows http://www.aerith.net/comet/catalog/0105P/2012-mag.gif 2011-05-03 C&MS: 105P/Singer Brewster http://cometography.com/pcomets/105p.html 2012-01-13 2011-02-05 JPL Close-Approach Data: 105P/Singer Brewster http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=105P;cad=1#cad 2012-02-17 Horizons Batch for 105P/Singer Brewster (90000967) on 2031-Jul-11 JPL Horizons Perihelion occurs when rdot flips from negative to positive https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%27DES%3D105P%3BCAP%27&START_TIME=%272031-Jul-11%27&STOP_TIME=%272031-Jul-12%2012%27&STEP_SIZE=%273%20hours%27&QUANTITIES=%2719%27 2026-04-15 External links 1000086 105P 105P/Singer Brewster at the Minor Planet Center database 105P/Singer Brewster at Seiichi Yoshida's website 104P/Kowal 106P/Schuster Category:Periodic comets 0105 105P 105P * *