Comet C/2022 E3 passing NGC1798 in Auriga 5'th Feb ~ 7.15pm (Tim Hawkes)

Celestial hemisphere: Northern · Constellation: Auriga (Aur) · Contains: Solar system body or event

Comet C/2022 E3 passing NGC1798 in Auriga 5'th Feb ~ 7.15pm, Tim Hawkes

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Comet C/2022 E3 passing NGC1798 in Auriga 5'th Feb ~ 7.15pm

Powered byPixInsight

Comet C/2022 E3 passing NGC1798 in Auriga 5'th Feb ~ 7.15pm

185 x 5s, 60 x 20s and 19 x 40s exposures using an ASI294 MC PRO camera and 300 mm VX12 F4 Newtonian early evening on 5 th Feb 2023. Short exposures because of the speed of comet movement and long focal lenghth. Poor sky conditions that deteriorated even further later in the evening. Captured in Sharpcap 4.1 beta (allowing a good live EEA view of stacked comet exposures). Processed in PixInsight. Not a great image from marginal data - just about shows a trailing dust tail but not any ion tail - but since it won't be back for tens of thousands of years - or more likely not at all -- this will have to do!

C/2022 E3 (ZTF) is a long-period comet from the Oort cloud. The comet has two tails — one grey/ yellow- brown dust tail , one blue (not seen here) ionized tail of CO+ streaming directly behind the direction to the sun— and glows not only with reflected light from the sun but also a glowing green coma - a mixture of dust and gas - around the center. This green glow arises from UV ionization and then electron recapture -associated transitions of diatomic carbon and cyanogen.

The comet's systematic designation starts with C to indicate that it is not a periodic comet, and "2022 E3" means that it was the third comet to be discovered in the first half of March 2022. The comet nucleus is estimated to be about a kilometer in size and rotating every 8.5 - 8,7 h. The comet reached its perihelion on 12 January 2023, at a distance of 1.11 AU (166 million km; 103 million mi), and the closest approach to Earth was on 1 February 2023, at a distance of 0.28 AU (42 million km; 26 million mi).

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B

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Status	Basic success
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Astrometry.net job	7223062
PixInsight job	n/a
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Comet C/2022 E3 passing NGC1798 in Auriga 5'th Feb ~ 7.15pm

Comet C/2022 E3 passing NGC1798 in Auriga 5'th Feb ~ 7.15pm

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Comet C/2022 E3 passing NGC1798 in Auriga 5'th Feb ~ 7.15pm

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