DELTA SCUTI

'Delta Scuti' (δ Sct / δ Scuti) is a triple star system in the constellation Scutum. It is approximately 187 light years from Earth.
Delta Scuti is also the prototype of the Delta Scuti type variable stars. The primary component of the star system, properly called 'Delta Scuti A', is a yellow-white F-type giant. It pulsates regularly with a period of 4.65 hours which results fluctuations in brightness from magnitude +4.60 to magnitude +4.79. It has two companion stars, the +12.2 magnitude 'Delta Scuti B', which is 15.2 arcseconds from the primary, and the +9.2 magnitude 'Delta Scuti C', which is 53 arcseconds away.