Star profile

39 Cygni

3D likeness based on its real data · class K · ~4,200 K

What is 39 Cygni

39 Cygni rests along the wing-arm of the Swan, the long cross that rides the summer Milky Way. It is an orange K-type giant —cool, eye-friendly, the colour of glowing copper— sitting some 250 light-years away. Its light set out in the early 1700s, while Flamsteed was still revising his catalogues, and arrives now with the patient hue of embers that refuse to fade.

Where it is and when to see it

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

From London it culminates about 71° above the horizon.
From New York it culminates about 81° above the horizon.
From Sydney it culminates about 24° above the horizon.

It can be seen from anywhere north of 58° S.

It ranks no. 22 in brightness among the 137 stars of Cygnus in our catalogue. To find it, start from Deneb, the brightest: it lies about 14° away (a fist at arm's length covers about 10°).

The light you see today left it about 250 years ago.

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Astronomical data for 39 Cygni

Constellation: Cygnus
Apparent magnitude: 4.43
Distance: 250.0 light years
Coordinates (J2000): RA 305.965° · Dec 32.190°
Catalogue: HIP 100587 · HD 194317

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Other stars in Cygnus

Cygnus has 137 stars in Stelvia's catalogue. Here are a few of them.

See all 137 stars in Cygnus