SkyMate
Constellation · best in August evenings

Cygnus

The Swan · Genitive Cygni · Cyg
Above the horizon all nightHighest after dark 20:31 · south · 82°
Join the waitlistSkyMate is coming to iPhone
N ↑ E ← · 59° FIELD

Where is Cygnus?

Times for LondonChange city

Look south, about 82° up at 20:31.

Rises
Always up
Highest
20:33
Sets
Never
Best after dark
20:31 · 82°

How to find Cygnus

Start with Deneb, Cygnus’s brightest star (mag 1.3). Nearby constellations include Vulpecula, Lyra, Lacerta and Cepheus.

Its center is at right ascension 20h 30m, declination +43°. Use the chart above: north is up and east is to the left, as when you face south from the Northern Hemisphere.

Brightest star: Deneb

Best time to see Cygnus

Cygnus is highest in the evening sky, around 10 pm, in August. A month or two either side it is still well placed, earlier or later in the night. All of it rises above the horizon from latitudes of about 90° N to 24° S.

From London tonight, Cygnus is above the horizon all night. It’s highest soon after dark, around 20:31, in the south at 82°.

This is position and timing only: clouds, haze and light pollution aren’t included.

Seeing Cygnus

Eyes

Its brightest star, Deneb, is easy to see. Tracing the whole pattern is easier away from bright lights.

Binoculars

Binoculars show many more stars than your eye, and bring out star clusters and brighter nebulae inside it.

Telescope

The constellation is far too large for a telescope’s view. Use one for the clusters, nebulae and galaxies inside it.

What you’re likely to see, not what a space telescope photographs. General guidance from catalog brightness and size, not a forecast for tonight.

About

Cygnus (genitive Cygni, abbreviated Cyg) is one of the 88 constellations recognized by the International Astronomical Union, which together cover the whole sky. Its brightest star is Deneb, magnitude 1.3.

SkyMate’s web catalog includes 5 named stars and 2 deep-sky objects in Cygnus.

Brightest stars and objects in Cygnus

Questions

What is the brightest star in Cygnus?
Deneb, at magnitude 1.3.
When is Cygnus visible?
Cygnus is highest in the evening sky, around 10 pm, in August. In the months either side it is still well placed, earlier or later in the night.
Can I see Cygnus from where I live?
All of Cygnus rises above the horizon from latitudes of about 90° N to 24° S. Outside that range, part or all of it stays below the horizon.

Sources: IAU; Wikidata (CC0); SkyMate. Positions computed for your place and time with astronomy-engine. Data & Licences