Celestial hemisphere:  Northern  ·  Constellation: Camelopardalis (Cam)  ·  Contains:  Solar system body or event
Comet C/2017 T2 (PANSTARRS), UN73
Comet C/2017 T2 (PANSTARRS)
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Comet C/2017 T2 (PANSTARRS)

Comet C/2017 T2 (PANSTARRS), UN73
Comet C/2017 T2 (PANSTARRS)
Powered byPixInsight

Comet C/2017 T2 (PANSTARRS)

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Description

I wondered why so many comets appear in a greenish cyan color:

The reason is, that most comets emit cyanogen (CN)2 and diatomic carbon (C2) when the coma builds up which leads to the given color...

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Comet C/2017 T2 (PANSTARRS), UN73