Star profile

HIP 37391

Variable star

3D likeness based on its real data · class M · ~3,200 K

What is HIP 37391

Deep within Cepheus throbs a variable red giant some 456 light-years away. Its light set out when Spanish conquistadors were crossing the Andes and the printing press was reshaping the world's memory. Like a restless stellar heart, its brightness rises and falls in slow cycles —a pulse that reminds us no star stands wholly still against time.

Where it is and when to see it

HIP 37391 lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is December, when it culminates around midnight.

From London it never sets and culminates about 54° up.
From New York it never sets and culminates about 44° up.
From Sydney it never rises above the horizon.

It can be seen from anywhere north of 3° S.

It ranks no. 24 in brightness among the 95 stars of Cepheus in our catalogue. To find it, start from Alderamin, the brightest: it lies about 30° away (a fist at arm's length covers about 10°).

The light you see today left it about 460 years ago.

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Astronomical data for HIP 37391

Constellation: Cepheus
Apparent magnitude: 5.05
Distance: 455.6 light years
Coordinates (J2000): RA 115.129° · Dec 87.020°
Catalogue: HIP 37391 · HD 51802

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Other stars in Cepheus

Cepheus has 95 stars in Stelvia's catalogue. Here are a few of them.

See all 95 stars in Cepheus