23 Cygni

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

23 Cygni visual magnitude is 5.14. Because of its reltive faintness, 23 Cygni should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 23 Cygni:

Color of 23 Cygni ⬤

Magnitude of 23 Cygni 5.14

Class Main-sequence

VISIBILITY RIGHT NOW 23 Cygni is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 26°.

Celestial coordinates and finder chart of 23 Cygni

23 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 23 Cygni are provided in the following table:

Right Ascension J2000 19h 53m 17s

Declination J2000 +57° 31’ 24”

Galactic Longitude 90.55°

Galactic Latitude 14.91°

Constellation Cygnus

The simplified sky map below shows the position of 23 Cygni in the sky:

Simplified finder chart for 23 Cygni.

Visibility of 23 Cygni from your location

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

23 Cygni is circumpolar and transits at 03:15 UTC (altitude: 84.0°)

Digitized Sky Survey image of 23 Cygni

The image below is a photograph of 23 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 23 Cygni is 0.009 arcsec per year in Right Ascension and 0.013 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 23 Cygni. The red arrow shows the motion of 23 Cygni during the next 10000 years (1.50 arcmin in Right Ascension and 2.17 arcmin in declination);

Distance of 23 Cygni from the Sun and relative movement

23 Cygni is distant 637.96 light years from the Sun and it is moving towards the Sun at the speed of 25 kilometers per second.

Distance (parsec) 195.69 pc

Distance (light year) 637.96 ly

Heliocentric radial velocity -25 km/s

Proper Motion RA 0.009 arcsec/year

Proper Motion Dec 0.013 arcsec/year

Spectral properties of 23 Cygni

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

Absolute magnitude -1.32

Spectral Type B5V

Color Index (B-V) -0.13

Temperature of 23 Cygni 12103K

The red dot in the diagram below shows where 23 Cygni is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 23 Cygni. Attribution: Richard Powell / CC BY-SA

Alternative designations of 23 Cygni

Flamsteed designation 23 Cygni

Henry Draper Catalogue HD188665

SAO Catalogue SAO32085

Hipparcos Catalogue HIP97870

Durchmusterung Catalogue BD+57 2084

In Evidence

Other stars in Cygnus