57 Cygni

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 table below summarizes the key facts about 57 Cygni:

Color of 57 Cygni ⬤

Magnitude of 57 Cygni 4.78

Class Main-sequence

VISIBILITY RIGHT NOW 57 Cygni is above the horizon from Greenwich, United Kingdom [change]. Altitude: 10°.

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:

Right Ascension J2000 20h 53m 14s

Declination J2000 +44° 23’ 13”

Galactic Longitude 84.9°

Galactic Latitude -0.19°

Constellation Cygnus

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

Simplified finder chart for 57 Cygni.

Visibility of 57 Cygni from your location

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

57 Cygni is circumpolar and transits at 08:31 UTC (altitude: 82.9°)

Digitized Sky Survey image of 57 Cygni

The image below is a photograph of 57 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 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.

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);

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.

Distance (parsec) 153.61 pc

Distance (light year) 500.77 ly

Heliocentric radial velocity -20 km/s

Proper Motion RA 0.01 arcsec/year

Proper Motion Dec 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.

Absolute magnitude -1.15

Spectral Type B5V

Color Index (B-V) -0.14

Temperature of 57 Cygni 12293K

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

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

Alternative designations of 57 Cygni

Flamsteed designation 57 Cygni

Henry Draper Catalogue HD199081

SAO Catalogue SAO50180

Hipparcos Catalogue HIP103089

Durchmusterung Catalogue BD+43 3755

General Catalogue of Variable Stars 13388

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Other stars in Cygnus