Ups

Variable star

Its story

Upsilon Ursae Majoris is a yellow-white F-type star 116 light-years away, sitting near the muzzle of the Great Bear, just west of the famous Plough. It is a Delta Scuti variable: pulsing on a rhythm of a few hours, swelling and contracting as its light travels to us. With the naked eye it stays modest, near the edge of city skies, yet it belongs to a family of oscillators that have helped astronomers take the inner pulse of stars and calibrate distances across our own galaxy.

Constellation: Ursa Major
Apparent magnitude: 3.78
Distance: 116.3 light years
Coordinates (J2000): RA 147.748° · Dec 59.039°
Catalogue: HIP 48319 · HD 84999

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