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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
SunriseRise: 7:01  
clear_day Transit: 12:12  
SunsetSet: 17:24
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All Constellations » Cygnus » 

57 Cygni

Altitude: 9.8°   Azimuth: 22.6°   Direction: North-North-East

57 Cygni is a variable main-sequence star in the constellation of Cygnus.

57 Cygni visual magnitude is 4.78. Because of its moderate brightness, 57 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 proper motion of 57 Cygni is 0.01 arcsec per year in Right Ascension and 0.001 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 57 Cygni star
DSS2 image of 57 Cygni. The red arrow shows the motion of 57 Cygni during the next 10000 years (1.67 arcmin in Right Ascension and 0.17 arcmin in declination);

Key facts about 57 Cygni

4.78
Main-sequence

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

Altitude: 9.8°
Azimuth: 22.6°
Direction: North-North-East

Celestial coordinates and finder chart of 57 Cygni

57 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 57 Cygni are provided in the following table:

20h 53m 14s
+44° 23’ 13”
84.9°
-0.19°
Cygnus

The simplified sky map below shows the position of 57 Cygni in the sky:

Finder chart 57 Cygni star
Simplified finder chart for 57 Cygni.

Visibility of 57 Cygni from your location

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

57 Cygni is circumpolar and transits at 10:45 UTC (altitude: 82.9°)

Distance of 57 Cygni from the Sun and relative movement

57 Cygni is distant 500.77 light years from the Sun and it is moving towards the Sun at the speed of 20 kilometers per second.

153.61 pc
500.77 ly
-20 km/s
0.01 arcsec/year
0.001 arcsec/year

Spectral properties of 57 Cygni

57 Cygni belongs to spectral class B5 and has a luminosity class of V corresponding to a main-sequence star.

-1.15
B5V
12293K

The red dot in the diagram below shows where 57 Cygni is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 57 Cygni. Attribution: Richard Powell / CC BY-SA

Alternative designations of 57 Cygni

SAO50180
SAO50180