68 Cygni

Altitude: 5.5° Azimuth: 356.5° Direction: North

68 Cygni is a variable giant star in the constellation of Cygnus.

68 Cygni visual magnitude is 5. Because of its moderate brightness, 68 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 68 Cygni:

Color of 68 Cygni ⬤

Magnitude of 68 Cygni 5

Class Giant

VISIBILITY RIGHT NOW

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

Altitude: 5.5°
Azimuth: 356.5°
Direction: North

Celestial coordinates and finder chart of 68 Cygni

68 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 68 Cygni are provided in the following table:

Right Ascension J2000 21h 18m 27s

Declination J2000 +43° 56’ 44”

Galactic Longitude 87.61°

Galactic Latitude -3.84°

Constellation Cygnus

The simplified sky map below shows the position of 68 Cygni in the sky:

Simplified finder chart for 68 Cygni.

Visibility of 68 Cygni from your location

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

68 Cygni is circumpolar and transits at 04:25 UTC (altitude: 82.5°)

Digitized Sky Survey image of 68 Cygni

The image below is a photograph of 68 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 68 Cygni is 0.006 arcsec per year in Right Ascension and -0.009 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of 68 Cygni. The red arrow shows the motion of 68 Cygni during the next 100000 years (10.00 arcmin in Right Ascension and -15.00 arcmin in declination);

Distance of 68 Cygni from the Sun and relative movement

68 Cygni is distant 32,600,000.00 light years from the Sun and it is moving far from the Sun at the speed of 1 kilometers per second.

Distance (parsec) 10,000,000.00 pc

Distance (light year) 32,600,000.00 ly

Heliocentric radial velocity 1 km/s

Proper Motion RA 0.006 arcsec/year

Proper Motion Dec -0.009 arcsec/year

Spectral properties of 68 Cygni

68 Cygni belongs to spectral class O7 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude -25.00

Spectral Type O7III

Color Index (B-V) -0.01

Temperature of 68 Cygni 10252K

The red dot in the diagram below shows where 68 Cygni is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 68 Cygni. Attribution: Richard Powell / CC BY-SA

Alternative designations of 68 Cygni

Flamsteed designation 68 Cygni

Henry Draper Catalogue HD203064

SAO Catalogue SAO50690

Hipparcos Catalogue HIP105186

Durchmusterung Catalogue BD+43 3877

FK5 Catalogue 3701

General Catalogue of Variable Stars V1809 Cyg

In Evidence

Other stars in Cygnus