hip-113281

Variable star

Its story

16 Lacertae —catalogued as EN Lacertae— is one of the classic prototypes of the Beta Cephei variables: a massive blue star that pulses several times a day from instabilities deep within. It belongs to a triple system, with the main binary eclipsing every 12.1 days, discovered in 1910 by Oliver J. Lee at Yerkes Observatory. Its light, after 1,274 years on the road, carries a seismic soundtrack that astronomers «listen to» through asteroseismology.

Constellation: Lacerta
Apparent magnitude: 5.60
Distance: 1274.2 light years
Coordinates (J2000): RA 344.098° · Dec 41.604°
Catalogue: HIP 113281 · HD 216916

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