Star profile

30 Cepheus

3D likeness based on its real data · class A · ~8,500 K

What is 30 Cepheus

30 Cephei is a white A-type star about 287 light-years away, set in the circumpolar region ruled by the angular silhouette of the King. Hotter and whiter than the Sun, its surface burns somewhere between 8,000 and 10,000 degrees. The light arriving now left around 1739, in the heart of the Enlightenment, when the great refractors were beginning to chart the northern sky.

Where it is and when to see it

30 Cepheus 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 78° up.
From New York it never sets and culminates about 67° up.
From Sydney it never rises above the horizon.

It can be seen from anywhere north of 26° S.

It ranks no. 34 in brightness among the 95 stars of Cepheus in our catalogue. To find it, start from Alderamin, the brightest: it lies about 9° away (a fist at arm's length covers about 10°).

The light you see today left it about 290 years ago.

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Astronomical data for 30 Cepheus

Constellation: Cepheus
Apparent magnitude: 5.19
Distance: 287.1 light years
Coordinates (J2000): RA 339.663° · Dec 63.584°
Catalogue: HIP 111797 · HD 214734

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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