UBVRI photometry of Betelgeuse over 23 years since 1999

Yojiro Ogane, Osamu Ohshima, Daisuke Taniguchi +1

We report the results of our continuous UBVRI-band photometry of Betelgeuse from 1999 to 2022 using the same photometric system. There are two advantages in our observation: (1) we…