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- Q1339310 subject Q18168525.
- Q1339310 subject Q7217170.
- Q1339310 subject Q8273081.
- Q1339310 subject Q9113131.
- Q1339310 subject Q9479598.
- Q1339310 abstract "5D/Brorsen (also known as Brorsen's Comet or Comet Brorsen) was a periodic Jupiter-family comet discovered February 26, 1846, by the Danish astronomer Theodor Brorsen.The perihelion of 5D/Brorsen was February 25, just a day before its discovery, and maintained the approach to Earth after that, passing closest to Earth on March 27 (at a distance of 0.52 AU). As a result of this close encounter to Earth the comet's coma diameter increased. Johann Friedrich Julius Schmidt estimating it as 3 to 4 arcmin across on March 9, and 8 to 10 arcmin across on the 22nd of that same month. Last seen on April 22, it was stationed about 20 degrees from the north celestial pole. By the end of this first apparition the orbital period was identified as 5.5 years. It was discovered that a close approach to Jupiter in 1842 put in its discovery orbit.The comet's 5.5 year period would mean that apparitions would alternate between good and poor. As expected, the comet was missed in its 1851 apparition, when the comet only came as close as 1.5 AU to Earth.The comet's orbit was still relatively uncertain, made worse by the fact it had approached Jupiter in 1854. In 1857, Karl Christian Bruhns found a comet on 18 March 1857. Soon an orbit was computed and it was found to be 5D/Brorsen, although predictions were three months off. The comet was followed until June 1857, and the orbit was now well known.The comet was missed in 1862, and the next recovery was in 1868. A close approach to Jupiter shortened the period enough to make the comet visible in 1873. A very favorable apparition followed in 1879, allowing the comet to be observed for the longest time to date – four months. The comet was missed in 1884, due to observing circumstances, but was also missed in 1890, a favorable apparition. The next favorable apparition occurred in 1901, but searches did not locate the comet.The next serious search was started by Brian G. Marsden, who believed the comet had faded out of existence, but computed the orbit for a very favorable 1973 apparition. Japanese observers made intensive searches for the comet, but nothing turned up. The comet is currently considered lost (see lost comet).".
- Q1339310 thumbnail 5dbrorsen.jpg?width=300.
- Q1339310 wikiPageExternalLink 005d.html.
- Q1339310 wikiPageExternalLink palermo1.ps.
- Q1339310 wikiPageWikiLink Q11063.
- Q1339310 wikiPageWikiLink Q12119.
- Q1339310 wikiPageWikiLink Q1699691.
- Q1339310 wikiPageWikiLink Q1811.
- Q1339310 wikiPageWikiLink Q18168525.
- Q1339310 wikiPageWikiLink Q217208.
- Q1339310 wikiPageWikiLink Q22066400.
- Q1339310 wikiPageWikiLink Q2604805.
- Q1339310 wikiPageWikiLink Q319.
- Q1339310 wikiPageWikiLink Q35.
- Q1339310 wikiPageWikiLink Q3559.
- Q1339310 wikiPageWikiLink Q430817.
- Q1339310 wikiPageWikiLink Q562111.
- Q1339310 wikiPageWikiLink Q62728.
- Q1339310 wikiPageWikiLink Q712812.
- Q1339310 wikiPageWikiLink Q719419.
- Q1339310 wikiPageWikiLink Q7217170.
- Q1339310 wikiPageWikiLink Q8273081.
- Q1339310 wikiPageWikiLink Q9113131.
- Q1339310 wikiPageWikiLink Q9479598.
- Q1339310 comment "5D/Brorsen (also known as Brorsen's Comet or Comet Brorsen) was a periodic Jupiter-family comet discovered February 26, 1846, by the Danish astronomer Theodor Brorsen.The perihelion of 5D/Brorsen was February 25, just a day before its discovery, and maintained the approach to Earth after that, passing closest to Earth on March 27 (at a distance of 0.52 AU). As a result of this close encounter to Earth the comet's coma diameter increased.".
- Q1339310 label "5D/Brorsen".
- Q1339310 depiction 5dbrorsen.jpg.