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Another major outburst of comet 29P/Schwassmann-Wachmann 1

ATel #14207; Zhong-Yi Lin (IANCU)), Wing-Huen Ip (IANCU),Chi-Sheng Lin (IANCU), Hsiang-Yao Hsiao (IANCU), Wei-Jir Hou(IANCU), Hung-Chin Lin(IANCU)
on 24 Nov 2020; 00:59 UT
Credential Certification: Zhong-Yi Lin (zylin@astro.ncu.edu.tw)

Subjects: Optical, Comet

Referred to by ATel #: 14323

We report that a major outburst of comet 29P/Schwassmann-Wachmann 1 was detected by using the images acquired with the SLT (16” Ritchey-Chretien telescope) at Lulin observatory. The outburst was observed to begin on 2020 November 20 with its brightness suddenly increasing by ~2.7 mag, as measured through a 5.6 arcsec (10,000 km) aperture. This outburst event was larger than those previously reported in September and October for which the brightness increases were all less than 0.5 mag (Atel #13110, #13179). Our images obtained before November 20 showed that the V-band magnitude was about 16.1. After the outburst, the central nuclear region was quite concentrated. Photometry of the images was all measured with 10,000 km radius apertures and calibrated to the PS1 catalog.

The lightcurve and images of comet 29P/S-W 1