33 Cygni

33 Cygni is a variable sub-giant star in the constellation of Cygnus.

33 Cygni visual magnitude is 4.3. Because of its moderate brightness, 33 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 33 Cygni:

Color of 33 Cygni ⬤

Magnitude of 33 Cygni 4.3

Class Sub-giant

VISIBILITY RIGHT NOW 33 Cygni is above the horizon from Greenwich, United Kingdom [change]. Altitude: 23°.

Celestial coordinates and finder chart of 33 Cygni

33 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 33 Cygni are provided in the following table:

Right Ascension J2000 20h 13m 23s

Declination J2000 +56° 34’ 04”

Galactic Longitude 91.08°

Galactic Latitude 12.06°

Constellation Cygnus

The simplified sky map below shows the position of 33 Cygni in the sky:

Simplified finder chart for 33 Cygni.

Visibility of 33 Cygni from your location

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

33 Cygni is circumpolar and transits at 07:39 UTC (altitude: 84.9°)

Digitized Sky Survey image of 33 Cygni

The image below is a photograph of 33 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 33 Cygni is 0.063 arcsec per year in Right Ascension and 0.083 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 33 Cygni. The red arrow shows the motion of 33 Cygni during the next 10000 years (10.50 arcmin in Right Ascension and 13.83 arcmin in declination);

Distance of 33 Cygni from the Sun and relative movement

33 Cygni is distant 152.27 light years from the Sun and it is moving towards the Sun at the speed of 18 kilometers per second.

Distance (parsec) 46.71 pc

Distance (light year) 152.27 ly

Heliocentric radial velocity -18 km/s

Proper Motion RA 0.063 arcsec/year

Proper Motion Dec 0.083 arcsec/year

Spectral properties of 33 Cygni

33 Cygni belongs to spectral class A3 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude 0.95

Spectral Type A3IV

Color Index (B-V) 0.11

Temperature of 33 Cygni 8932K

The red dot in the diagram below shows where 33 Cygni is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 33 Cygni. Attribution: Richard Powell / CC BY-SA

Alternative designations of 33 Cygni

Flamsteed designation 33 Cygni

Henry Draper Catalogue HD192696

SAO Catalogue SAO32378

Hipparcos Catalogue HIP99655

Durchmusterung Catalogue BD+56 2376

FK5 Catalogue 758

General Catalogue of Variable Stars 12935

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Other stars in Cygnus