V Sagittae

V Sagittae or V Sge is a cataclysmic variable in the constellation Sagitta. It is the only super soft X-ray source non-magnetic cataclysmic variable found so far. Lidiya Tseraskaya discovered the variability of this star, in 1902. It appeared with its variable star designation in Annie Jump Cannon's 1907 work Second catalogue of variable stars.