17P/Holmes

**Comet Holmes**
	comet
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Instance of	periodic comet; Jupiter-family comet;
Discoverer or inventor	Edwin Holmes;
Time of discovery or invention	7 November 1892; 6 November 1892;
Diameter	3.42 km;
Authority file
	Q477136; Library of Congress authority ID: sh85061507; J9U ID: 987007562963105171
	Reasonator; Scholia; Wikidocumentaries; KML file; Search depicted;

17P/Holmes is a periodic comet.

2007 outburst

Motion viewed from Earth The comet's retrograde path in Perseus during July 2007 – March 2008. (Dates given every 14 days)	Location of comet from Earth (45N, 8PM, Oct 30, 2007) The comet looks like a bright star in early evening, in the constellation Perseus and above the bright star Capella. In binoculars or a small telescope, it resembles a round fuzzy ball.
Motion viewed from space 17P/Holmes is a periodic comet in an inclined and elliptical orbit between Mars and Jupiter.^[1] The comet was closest to the sun on May 4, 2007, and has been moving slowly away from the sun in an elliptical orbit.

Motion with expanding dust cloud A simulation showing the angular diameter of the expanding dust cloud for 120 days past the initial event on October 24. The surface brightness will continue to decrease over time.	Photo composite A composite of Comet Holmes photos showing the comet's size and motion in the constellation Perseus from October 25, 2007 through March 9, 2008.

October 31: (140mm) - Comet is in center
November 20: With Canon XTI 55 mm f5.6, ISO 1600 for 17" from San Francisco	January 12, 2008: 17P/Holmes

Oct 25:
Cloudbait Observatory, Guffey, Colorado^[2]
(5.1" square)
Oct 26:
4.5" (114mm) telescope
Flintstone, Georgia
Oct 27:
14.5" (370mm) Dobson
Oct 30:
19" reflector
Torquay, UK
Oct 31:
8" telescope + EOS400D
Barcelona, Spain
8" telescope + EOS400D
Barcelona, Spain. Shows the comet movement over the stars background for 50 minutes. Changes on brightness are due to different exposure times on each image.
Nov 2:
300mm telelens, Auvergne, France
Nov 4:
Hungary
Nov 7:
10" Schmidt-Newtonian
Brevard County, Florida
Nov 10:
Nikon 400 mm f/2.8
on CG-5, BW film
Albuquerque, New Mexico
Nov 13:
Marshall Twp, Pennsylvania
Nov 14:
With Alpha Persei association, Canon 20d with 400mm f/2.8 telephoto on Meade LXD-55
Nov 15:
Torquay, UK
Nov 18:
Nikon 400 mm f/2.8 on CG-5
Elite Chrome 100 slide film
West of Rio Rancho
New Mexico
Nov 29:
Marshall Twp, Pennsylvania
Dec 14:
Unprocessed single frame from Canon 5D / Canon 400 mm f/2.8 telephoto on Meade LXD-55
Dec 30:
Unprocessed single frame from Canon 5D / Canon 400 mm f/2.8 telephoto on Meade LXD-55