Segin

Segin (ε Cassiopeiae) is a blue-white giant star in the constellation Cassiopeia. With an apparent magnitude of 3.38 it is the 255th-brightest star in the night sky, and it is about 466 light-years from Earth.

Finder chart showing where Segin is in the constellation Cassiopeia
Segin (circled) in Cassiopeia, with the surrounding constellations and bright stars.
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Facts

ConstellationCassiopeia
Designationε Cassiopeiae (Epsilon Cassiopeiae), HR 542
Apparent magnitude3.38 (255th brightest)
Spectral typeB3III
Colorblue-white (B−V -0.15)
Distanceabout 466 light-years
Right ascension1 h 54.4 min
Declination+63.67°
Best monthDecember (at about 9 pm)

Sources: star positions, magnitudes and colors from the Yale Bright Star Catalogue; constellation boundaries and star names from the IAU; areas and distances from Wikidata; stick figures by M. van der Sluys. How the maps are made.

How to find Segin

Segin is in Cassiopeia. From 40° N it never sets; it is highest in the north, about 66° up. From 35° S it stays below the horizon. Nearby bright stars: Schedar (12° away), Caph (13° away) and Mirfak (18° away).

Cassiopeia constellation →

Other named stars in Cassiopeia

SchedarCaphRuchbahAchirdFuluCastula

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