The latest outburst was only a small one with an amplitude of 0.7 mag in
a 9 arcsec radius. My observations in a gale tonight show that the comet
is back to trend only a day after the outburst was reported. It shows
how important it is to keep a constant watch on this comet as it
approches perihelion.

If you would like to contribute data to the BAA programme please have a
look at the tutorial here:

https://britastro.org/section_news_item/12p-pons-brooks-observing-campaign

Nick.

On 03/02/2024 21:57, Nick James wrote:
> Thomas/Denis,
>
> Yes, this looks to be a new outburst. An updated lightcurve including
> Denis' photometry is here:
>
> https://nickdjames.com/Comets/2024/12P_lightcurve_9arcsec.png
>
> The last pre-outburst photometry in the BAA database is this observation
> from Martin Mobberley using iTelescope T21.
>
> 2460343.59868   11.920 G  C  163.20   26.921    Gaia2   12P/Pons-Brooks
> 2460343.60289   11.901 G  C  200.30   27.129    Gaia2   12P/Pons-Brooks
> 2460343.60539   11.890 G  C  220.07   26.967    Gaia2   12P/Pons-Brooks