Alpheratz
Also known as α And · HR 15
Alpheratz is an alpha2 cvn variable star in the constellation Andromeda, about 97 light-years from Earth.
Facts
| Type | Alpha2 cvn variable star (spectral type B8IV-VHgMn) |
|---|---|
| Constellation | Andromeda |
| Position (J2000) | 0h 08m 23s, +29° 05′ |
| Distance | 97 light-years (its light set off about 97 years ago) |
| Brightness | magnitude 2.06 (smaller is brighter; the faintest stars the eye sees are about 6) |
| Studied in | 483 scientific papers (SIMBAD) |
When and how to see it
Alpheratz is highest in the sky at midnight in September. From India (about 20° N) it climbs to about 81° above the horizon; from 50° N, to about 69°. To see it you need the naked eye, even from a town.
Heights are worked out for India and for 50° N. Set your location in Settings to see them for where you are.
For tonight's best time from your own town, the darkness and the Moon, open it on the map and see its "Tonight from your location" card.
More in Andromeda
Everything in Andromeda · All 88 constellations · All sky objects
Data: SIMBAD (CDS, Strasbourg; the site's weekly copy) · Data sources & credits