Rotating ellipsoidal variables

Spica is the brightest object in the constellation of Virgo and one of the 20 brightest stars in the night sky. It has the Bayer designation α Virginis, which is Latinised to Alpha Virginis and abbreviated Alpha Vir or α Vir. Analysis of its parallax shows that it is located 250 light-years from the Sun. It is a spectroscopic binary star and rotating ellipsoidal variable; a system whose two stars are so close together they are egg-shaped rather than spherical, and can only be separated by their spectra. The primary is a blue giant and a variable star of the Beta Cephei type.

Galactic X-ray source in the constellation Cygnus that is very likely a black hole

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star in the constellation Triangulum

class of close binary variable star system

A0620-00 (abbreviated from 1A 0620-00) is a binary star system in the constellation of Monoceros, with an apparent magnitude of 11.2.

star in the constellation Centaurus

star system in the constellation Libra

spectroscopic binary star system in the constellation Orion

binary star system in the constellation Lacerta

star in the constellation Cassiopeia

binary star system in the constellation Perseus

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variable star in the constellation Mensa

star in the constellation Aquila

star in the constellation Camelopardalis

star system in the constellation Perseus

star in the constellation Triangulum

star in the constellation Cepheus

star in the constellation Ara

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star

High-mass X-ray binary

star in the constellation Cygnus

star system in the constellation Centaurus