hip-23783

Its story

9 Aurigae, designated V398 Aurigae, was among the first stars recognised as a Gamma Doradus variable, identified by Krisciunas and Guinan in 1990. It pulses with a 1.258-day period through non-radial oscillations that ripple across its surface, drifting gently between magnitudes 4.93 and 5.03. At just 86 light-years —a relatively close neighbour of the Sun—, it is also a multiple system, with a single-lined spectroscopic binary as its main component.