Star profile

22 Andromedae

Highly luminous star

3D likeness based on its real data · class F · ~6,500 K

What is 22 Andromedae

22 Andromedae is a luminous yellow giant of class F2II, about 1,200 light-years away from Earth. Its radius is more than 33 solar radii and it pours out over 1,600 times the Sun's total energy output: a swollen furnace that has already completely burned through its core hydrogen reserves. Visible only under clean skies, it looks humble —yet it is actually one of the lanterns lighting the outline of Andromeda.

Where it is and when to see it

22 Andromedae lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is October, when it culminates around midnight.

From London it never sets and culminates about 85° up.
From New York it culminates about 85° above the horizon.
From Sydney it culminates about 10° above the horizon.

It can be seen from anywhere north of 44° S.

It ranks no. 31 in brightness among the 81 stars of Andromeda in our catalogue. To find it, start from Alpheratz, the brightest: it lies about 17° away (a fist at arm's length covers about 10°).

The light you see today left it about 1,200 years ago.

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Astronomical data for 22 Andromedae

Constellation: Andromeda
Apparent magnitude: 5.01
Distance: 1230.9 light years
Coordinates (J2000): RA 2.580° · Dec 46.072°
Catalogue: HIP 841 · HD 571

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Other stars in Andromeda

Andromeda has 81 stars in Stelvia's catalogue. Here are a few of them.

See all 81 stars in Andromeda