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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:38  
clear_day Transit: 11:46  
SunsetSet: 15:54 south
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All Constellations » Cygnus » 

33 Cygni

Altitude: 64.7°   Azimuth: 298.5°   Direction: West-North-West

33 Cygni is a variable sub-giant star in the constellation of Cygnus.

33 Cygni visual magnitude is 4.3. Because of its moderate brightness, 33 Cygni should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about 33 Cygni:


33 Cygni is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 64.7°
Azimuth: 298.5°
Direction: West-North-West

Celestial coordinates and finder chart of 33 Cygni

33 Cygni is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 33 Cygni are provided in the following table:

20h 13m 23s
+56° 34’ 04”

The simplified sky map below shows the position of 33 Cygni in the sky:

Finder chart 33 Cygni star
Simplified finder chart for 33 Cygni.

Visibility of 33 Cygni from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

33 Cygni is circumpolar and transits at 15:40 UTC (altitude: 84.9°)

Digitized Sky Survey image of 33 Cygni

The image below is a photograph of 33 Cygni from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of 33 Cygni is 0.063 arcsec per year in Right Ascension and 0.083 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 33 Cygni star
DSS2 image of 33 Cygni. The red arrow shows the motion of 33 Cygni during the next 10000 years (10.50 arcmin in Right Ascension and 13.83 arcmin in declination);

Distance of 33 Cygni from the Sun and relative movement

33 Cygni is distant 152.27 light years from the Sun and it is moving towards the Sun at the speed of 18 kilometers per second.

46.71 pc
152.27 ly
-18 km/s
0.063 arcsec/year
0.083 arcsec/year

Spectral properties of 33 Cygni

33 Cygni belongs to spectral class A3 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where 33 Cygni is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 33 Cygni. Attribution: Richard Powell / CC BY-SA

Alternative designations of 33 Cygni