Alpheratz

Alpheratz

(al-feer -ats) (Sirrah; α And) A bluish-white giant that is the brightest star in the constellation Andromeda. It is both a spectroscopic binary (period 96.7 days) and a spectrum variable. It originally lay in the constellation Pegasus, as Delta (δ) Pegasi, and is still considered part of the Great Square of Pegasus. mv : 2.07; spectral type: B9p III; distance: 31 pc.
Mentioned in ?
References in periodicals archive ?
The Square's northeastern star is Alpheratz, which actually belongs to Andromeda.
Using our sky maps: here's how to use the monthly sky maps on the following pages to identify your evening stars and constellations
I usually start at 51 And, which is located at the end of the northern part of the 'V' of stars originating at Alpheratz, though if you find locating 51 And tricky, you can start at Almaak (y And) and head northwest to find 51.
M76--the Dumbbell Nebula's neglected little brother
The famous Square of Pegasus is made up of four stars, of which one is allocated to Andromeda: Alpheratz (alpha Andromedae).
Monthly sky diary
Alpheratz, one of the four stars forming the 'Square of Pegasus', is technically in the constellation of Andromeda as Alpha Andromedae.
The sky
The asterism that we know as the 'Square of Pegasus' is of course something of a misnomer because the top left star is Alpheratz or Alpha Andromedae.
Sky notes: 2013 August & September
I began my star-hop at 2nd-magnitude Alpheratz ([alpha] Andromedae) at the northeast corner of the Great Square.
A galaxy group in Pegasus: Abell 2666 lies near the northeast corner of the Great Square
One of these, Alpheratz, lies lower right of our chart.
Autumn: the far northern sky now holds the richest collection of targets for users of small scopes under bright skies
0 magnitude threshold, particularly in close proximity to Alpheratz (alpha And).
What is the faintest naked-eye object?
1-magnitude Alpheratz also marks the northeast corner of the Great Square of Pegasus.
October: four planets await early birds at dawn. But if you're a night owl instead, you can enjoy the king of the evening sky, Jupiter
The Square's northeastern star is Alpheratz, which actually belongs to another constellation--Andromeda; its official designation is Alpha ([alpha]) Andromedae.
Stars of the Andromeda Legend: high in the south some heroic constellations hold remarkable sights
THE NGC 68 GROUP is a small clump of galaxies located 20' south of the 7th-magnitude star HD 1406, which your finderscope will pick up 21/2[degrees] east-northeast of 2nd-magnitude Alpheratz.
Galaxy gauze: Andromeda's NGC 68 group isn't unusual--it only seems that way
At the constellation's apex, 2nd-magnitude Alpheratz establishes her head.
Constellation couples: linked by mythology, four seasonal constellation pairs point the way to numerous celestial wonders

Encyclopedia browser ?
Full browser ?