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Hello Thomas,
Here are my observations from summer?to now. Unfortunately, I made no observations in October and early November, so although the comet has brightened,?it is not clear if the brightening occurred over a short or long period.
All the best
Peter
Type??Comet?Obs? ? ? ? ? ? ? ? ? ? ? ? ?date????Meth??? ? Mag??Refcat?Inst T??App??Inst F?Inst P??Coma??User??Location???
CCD???C/2023 Q1???22/12/2024 21:11??Z?????15.6??GG????C?????31.5??8?????1260??0.80'?CAR06?PGC Observatory Z10, Fregenal de la sierra, Spain?????
CCD???C/2023 Q1???10/12/2024 03:18??Z?????15.9??GG????C?????31.5??8?????1200??0.80'?CAR06?PGC Observatory Z10, Fregenal de la sierra, Spain?????
CCD???C/2023 Q1???27/11/2024 02:43??Z?????16.1??GG????C?????31.5??8?????1200??0.80'?CAR06?PGC Observatory Z10, Fregenal de la sierra, Spain?????
CCD???C/2023 Q1???04/09/2024 01:48??Z?????17.5??GG????C?????31.5??8?????1200??0.40'?CAR06?PGC Observatory Z10, Fregenal de la sierra, Spain?????
CCD???C/2023 Q1???16/08/2024 03:21??Z?????17.1??GG????C?????31.5??8?????960???0.40'?CAR06?PGC Observatory Z10, Fregenal de la sierra, Spain?????
CCD???C/2023 Q1???05/08/2024 02:33??Z?????17.4??GG????C?????31.5??8?????960???0.40'?CAR06?PGC Observatory Z10, Fregenal de la sierra, Spain?????
CCD???C/2023 Q1???16/07/2024 02:52??Z?????17.5??GG????C?????31.5??8?????1080??0.40'?CAR06?PGC Observatory Z10, Fregenal de la sierra, Spain?????
CCD???C/2023 Q1???10/07/2024 02:39??Z?????17.5??GG????C?????31.5??8?????1200??0.40'?CAR06?PGC Observatory Z10, Fregenal de la sierra, Spain?????
From: [email protected] <[email protected]> on behalf of Thomas Lehmann via groups.io <t.lehmann@...>
Sent: 26 December 2024 22:19 To: [email protected] <[email protected]> Subject: [comets-ml] Unusual brightening of comet C/2023 Q1 ?
According to observations by S. Fritsche and myself the comet C/2023 Q1 has started a sudden brightening in November. Unfortunately our observations are very sparse due to the bad weather during the last two months. Our data suggest a brightening by 1-2 mag between October 26th and November 30th. Latest measurement (green channel): 2024-12-23.46 UT, m1=14.1, coma diam. 5' A more thorough investigation by using small aperture measurements is on the way. Thanks to all contributors for sharing results and ideas/thoughts to this list. Merry Christmas and best wishes to all of you, Thomas |
