Celestial hemisphere:  Southern  ·  Constellation: Hydra (Hya)  ·  Contains:  Solar system body or event
Comet C/2007 W1, Boattini shot on May 12th, 2007, John O'Neal, NC Stargazer
Comet C/2007 W1, Boattini shot on May 12th, 2007
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Comet C/2007 W1, Boattini shot on May 12th, 2007

Acquisition type: Lucky imaging

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Description

C/2007 W1 (Boattini) is a long-period comet discovered on 20 November 2007, by Andrea Boattini at the Mt. Lemmon Survey. At the peak the comet had an apparent magnitude around 5. On 3 April 2008, when C/2007 W1 was 0.66AU from the Earth and 1.7AU from the Sun, the coma (expanding tenuous dust atmosphere) of the comet was estimated to be as large as 10 arcminutes. This made the coma roughly 290,000 km in diameter.

On May 12, 2007 I shot this image. On 12 June 2008, the comet passed within about 0.21005 AU (31,423,000 km; 19,525,000 mi) of the Earth. The comet came to perihelion (closest approach to the Sun) on 24 June 2008 at a distance of 0.8497 AU.

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Comet C/2007 W1, Boattini shot on May 12th, 2007, John O'Neal, NC Stargazer

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