2025v1 20251108 mjaeger

C/2025 V1 Borisov - 2025 nov. 8 3.52 UT

21x20sec UV/IR + 8x35sec green 11" RASA QHY600

m1-14m0 coma 30" tail 80" pa 290

We can confirm Mr. Yoshimoto's observation. The comet is disintegrating, but still had a measurable cc. The residues were acceptable. Nevertheless, the comet lost a 3 mag between November 4 and November 8. This makes it clear that there was an outburst at the time of discovery, probably the last one before the end.

M. Jäger, G. Rhemann, E. Prosperi