69 Cygni

Altitude: 50.3° Azimuth: 90.7° Direction: East

69 Cygni is a multiple hypergiant star in the constellation of Cygnus.

69 Cygni visual magnitude is 5.94. Because of its reltive faintness, 69 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 69 Cygni:

Color of 69 Cygni ⬤

Magnitude of 69 Cygni 5.94

Class Hypergiant

VISIBILITY RIGHT NOW

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

Altitude: 50.3°
Azimuth: 90.7°
Direction: East

Celestial coordinates and finder chart of 69 Cygni

69 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 69 Cygni are provided in the following table:

Right Ascension J2000 21h 25m 46s

Declination J2000 +36° 40’ 02”

Galactic Longitude 83.39°

Galactic Latitude -9.96°

Constellation Cygnus

The simplified sky map below shows the position of 69 Cygni in the sky:

Simplified finder chart for 69 Cygni.

Visibility of 69 Cygni from your location

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

Today's 69 Cygni rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 53.3° RISE 5:31

Max altitude: 75.2° TRANSIT 16:05

Azimuth: 306.7° SET 2:42

Digitized Sky Survey image of 69 Cygni

The image below is a photograph of 69 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 69 Cygni is 0.006 arcsec per year in Right Ascension and -0.005 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of 69 Cygni. The red arrow shows the motion of 69 Cygni during the next 100000 years (10.00 arcmin in Right Ascension and -8.33 arcmin in declination);

Distance of 69 Cygni from the Sun and relative movement

69 Cygni is distant 2,762.71 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

Distance (parsec) 847.46 pc

Distance (light year) 2,762.71 ly

Heliocentric radial velocity 3 km/s

Proper Motion RA 0.006 arcsec/year

Proper Motion Dec -0.005 arcsec/year

Spectral properties of 69 Cygni

69 Cygni belongs to spectral class B0 and has a luminosity class of I corresponding to a hypergiant star.

Absolute magnitude -3.70

Spectral Type B0I

Color Index (B-V) -0.08

Temperature of 69 Cygni 11247K

The red dot in the diagram below shows where 69 Cygni is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 69 Cygni. Attribution: Richard Powell / CC BY-SA

69 Cygni star system properties

69 Cygni is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the 69 Cygni double sysyem:

Main star magnitude 5.94

Secondary star magnitude 11.24

Magnitude difference 5.3

Separation 53.4 arcsec

Alternative designations of 69 Cygni

Flamsteed designation 69 Cygni

Henry Draper Catalogue HD204172

SAO Catalogue SAO71329

Hipparcos Catalogue HIP105811

Durchmusterung Catalogue BD+36 4557

Aitken Double Star Catalogue ADS14969

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