This star is believed to have weakened from 1st to 3rd magnitude in the historical period, although there is not enough evidence for it. However, it is a very beautiful binary star, with its white companions having a brightness of 3.4 mag and 4.5 mag, and they are 8.2" apart. To resolve this pair, a telescope with a 5 cm diameter objective is sufficient. However, due to its low declination, this system is very difficult to observe in our country.