hip-21972

Hot blue star

Its story

A blue star in Perseus, the hero who slew Medusa. Its light set out 683 years ago, when the Black Death was sweeping Europe and the papacy had moved to Avignon. A B-class star —hot, massive, intensely blue— it shines with vastly more energy than the Sun and will last only a minuscule fraction of the galaxy's age.

Constellation: Perseus
Apparent magnitude: 5.86
Distance: 683.9 light years
Coordinates (J2000): RA 70.840° · Dec 49.974°
Catalogue: HIP 21972 · HD 29721

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Symbolic commemorative gift — no ownership, no IAU recognition.