OU Puppis

OU Puppis (OU Pup) is a class A0 (white main-sequence) star in the constellation Puppis. Its apparent magnitude is 4.87 and it is approximately 184.4 light years away based on parallax.
It is an α² CVn variable, ranging from 4.93 to 4.86 magnitude with a period of 0.92 days.
Unlike the majority of star pairs, the number attached to the Bayer designation 'L' is generally a subscript: L1. Its better-known companion L2 Puppis is similarly represented.