Comet 17P Holmes 11/13/2007
Image Capture Details

Optics:  Meade LX200 14 GPS @ F/2
Mount: Meade LX200
Camera: Hutech Mod Canon DLSR
Filters: Astronomik LP
Exposure:  301 image X 12Secs = 60 Minutes
Distance:  151 Million Miles
Time: 9:09pm - 10:15PM EST.
Location: Waldwick, NJ
1.  The comet was discovered by Edwin Holmes on November 6,
1892 while conducting regular observations of the Andromeda
Galaxy (M31). The comet was undergoing an outburst similar to the
2007 outburst when Holmes spotted it for the first time. 17P/Holmes
brightened to about magnitude 4 or 5 and then faded over several

It was confirmed by Edward Walter Maunder (Royal Observatory,
Greenwich, England), William Henry Maw (England), and Kidd
(Bramley, England). The comet was independently discovered by
Thomas David Anderson (Edinburgh, Scotland) on November 8 and
by John Ewen Davidson (Mackay, Queensland, Australia) on
November 9.

The first elliptical orbits were independently calculated by Heinrich
Kreutz and George Mary Searle. Additional orbits eventually
established the perihelion date as June 13 and the orbital period as
6.9 years. These calculations proved that this comet was not a return
of 3D/Biela.

The 1899 and 1906 appearances were observed, but the comet was
lost after 1906 until recovered on July 16, 1964 by Elizabeth Roemer
(US Naval Observatory, Flagstaff, Arizona, USA); and, aided by
computer predictions by Brian G. Marsden, the comet has been
observed on every return since.

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© 2008 David A. Trapani
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