71 Cygni

Altitude: 62.3° Azimuth: 276.5° Direction: West

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

71 Cygni visual magnitude is 5.24. Because of its reltive faintness, 71 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 71 Cygni:

Color of 71 Cygni ⬤

Magnitude of 71 Cygni 5.24

Class Hypergiant

VISIBILITY RIGHT NOW

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

Altitude: 62.3°
Azimuth: 276.5°
Direction: West

Celestial coordinates and finder chart of 71 Cygni

71 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 71 Cygni are provided in the following table:

Right Ascension J2000 21h 29m 26s

Declination J2000 +46° 32’ 26”

Galactic Longitude 90.81°

Galactic Latitude -3.35°

Constellation Cygnus

The simplified sky map below shows the position of 71 Cygni in the sky:

Simplified finder chart for 71 Cygni.

Visibility of 71 Cygni from your location

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

71 Cygni is circumpolar and transits at 04:39 UTC (altitude: 85.1°)

Digitized Sky Survey image of 71 Cygni

The image below is a photograph of 71 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 71 Cygni is 0.045 arcsec per year in Right Ascension and 0.104 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of 71 Cygni. The red arrow shows the motion of 71 Cygni during the next 1000 years (0.75 arcmin in Right Ascension and 1.73 arcmin in declination);

Distance of 71 Cygni from the Sun and relative movement

71 Cygni is distant 223.59 light years from the Sun and it is moving towards the Sun at the speed of 19 kilometers per second.

Distance (parsec) 68.59 pc

Distance (light year) 223.59 ly

Heliocentric radial velocity -19 km/s

Proper Motion RA 0.045 arcsec/year

Proper Motion Dec 0.104 arcsec/year

Spectral properties of 71 Cygni

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

Absolute magnitude 1.06

Spectral Type K0III

Color Index (B-V) 0.97

Temperature of 71 Cygni 4816K

The red dot in the diagram below shows where 71 Cygni is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 71 Cygni. Attribution: Richard Powell / CC BY-SA

Alternative designations of 71 Cygni

Flamsteed designation 71 Cygni

Henry Draper Catalogue HD204771

SAO Catalogue SAO50934

Hipparcos Catalogue HIP106093

Durchmusterung Catalogue BD+45 3558

FK5 Catalogue 807

In Evidence

Other stars in Cygnus