Alpheratz

Alpheratz (α Andromedae) is a blue-white star in the constellation Andromeda. With an apparent magnitude of 2.06 it is the 56th-brightest star in the night sky, and it is about 97 light-years from Earth.

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

ConstellationAndromeda
Designationα Andromedae (Alpha Andromedae), HR 15
Apparent magnitude2.06 (56th brightest)
Spectral typeB8IVpMnHg
Colorblue-white (B−V -0.11)
Distanceabout 97 light-years
Right ascension0 h 8.4 min
Declination+29.09°
Best monthNovember (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 Alpheratz

Alpheratz is in Andromeda. From 40° N it is highest in the south in November evenings, about 79° above the horizon. From 35° S it reaches about 26° in the north. Nearby bright stars: Scheat (14° away), Mirach (14° away) and Markab (20° away).

Andromeda constellation →

Other named stars in Andromeda

MirachAlmachNembusTitawinAdhil

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