21P, nucleus now, mag.13.2
Taken by Odd Trondal on October 3, 2018 @
Oslo
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Camera Used: Unavailable Unavailable
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Date Taken: Unavailable
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Details:
Magnitude of the nucleus has changed from 11.9 to 13.2 since September 13, 2018.
The light variations can be related to small outbursts and the long term variation can be a perspective effect related to the positions of the earth and sun..
Previous image :
http://spaceweathergallery.com/indiv_upload.php?upload_id=148016
Software used: TheSky6, CCDSoft 5, MSB Astroart 2.0, Picture Window 2.0, MS Paint, DSS II color data.
Perihel 71.77
Photographer's website:
http://https://www.flickr.com/photos/odd_trondal/
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