About 4.7 million years ago, Adhara was 34 light-years from the Sun, and was the brightest star in the sky with a magnitude of

peak brightness of

Men at Arms (Wikipedia) Men at Arms is a fantasy novel by British writer Terry Pratchett, the 15th book in the Discworld series, first published in 1993. It is the second novel about the Ankh-Morpork City Watch on the Discworld. Lance-constable Angua von Überwald, later in the series promoted to the rank of Sergeant, is introduced in this book. Lance-constable (in the course of the novel promoted to Acting-constable) Detritus is introduced as a new member of the watch as well, though he had already appeared in other Discworld novels, most notably in Moving Pictures. Also notable is the only appearance of Lance-constable Cuddy (also promoted to Acting-constable).

Epsilon Canis Majoris (Wikipedia) Epsilon Canis Majoris is a binary star system and the second-brightest star in the constellation of Canis Major. Its name is a Bayer designation that is Latinised from ε Canis Majoris, and abbreviated Epsilon CMa or ε CMa. This is the 22nd-brightest star in the night sky with an apparent magnitude of 1.50. About 4.7 million years ago, it was the brightest star in the night sky, with an apparent magnitude of −3.99. Based upon parallax measurements obtained during the Hipparcos mission, it is about 430 light-years distant from the Sun.