72 Cygni

Altitude: 12.7° Azimuth: 42.1° Direction: North-East

72 Cygni is a hypergiant star in the constellation of Cygnus.

72 Cygni visual magnitude is 4.9. Because of its moderate brightness, 72 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 72 Cygni:

Color of 72 Cygni ⬤

Magnitude of 72 Cygni 4.9

Class Hypergiant

VISIBILITY RIGHT NOW

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

Altitude: 12.7°
Azimuth: 42.1°
Direction: North-East

Celestial coordinates and finder chart of 72 Cygni

72 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 72 Cygni are provided in the following table:

Right Ascension J2000 21h 34m 46s

Declination J2000 +38° 32’ 03”

Galactic Longitude 86.01°

Galactic Latitude -9.85°

Constellation Cygnus

The simplified sky map below shows the position of 72 Cygni in the sky:

Simplified finder chart for 72 Cygni.

Visibility of 72 Cygni from your location

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

72 Cygni is circumpolar and transits at 16:45 UTC (altitude: 77.1°)

Digitized Sky Survey image of 72 Cygni

The image below is a photograph of 72 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 72 Cygni is 0.124 arcsec per year in Right Ascension and 0.099 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of 72 Cygni. The red arrow shows the motion of 72 Cygni during the next 1000 years (2.07 arcmin in Right Ascension and 1.65 arcmin in declination);

Distance of 72 Cygni from the Sun and relative movement

72 Cygni is distant 255.49 light years from the Sun and it is moving towards the Sun at the speed of 66 kilometers per second.

Distance (parsec) 78.37 pc

Distance (light year) 255.49 ly

Heliocentric radial velocity -66 km/s

Proper Motion RA 0.124 arcsec/year

Proper Motion Dec 0.099 arcsec/year

Spectral properties of 72 Cygni

72 Cygni belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.

Absolute magnitude 0.43

Spectral Type K0III

Color Index (B-V) 1.08

Temperature of 72 Cygni 4559K

The red dot in the diagram below shows where 72 Cygni is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 72 Cygni. Attribution: Richard Powell / CC BY-SA

Alternative designations of 72 Cygni

Flamsteed designation 72 Cygni

Henry Draper Catalogue HD205512

SAO Catalogue SAO71480

Hipparcos Catalogue HIP106551

Durchmusterung Catalogue BD+37 4359

FK5 Catalogue 3722

Support us

In Evidence

Other stars in Cygnus