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| | M 91 (Site not responding. Last check: 2007-11-04) |
 | | For a long time, M91 was a "missing" Messier object, as Messier had determined its position from M89 while he thought it was from M58, as the Texas amateur W.C. Williams has figured out in 1969. |
 | | Previously, opinions have been around that M91 had either been a comet which the great comet hunter Messier mistook for a nebula, and Owen Gingerich had suspected that it had been a duplicate observation of M58. |
 | | Messier observed M91 on March 18th, 1781 "Nebula without a star in Virgo, above the previous one, number 90. |
| www.messiermarathon.com /new_page_97.htm (234 words) |
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