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Fawaris - δ Cygni (delta Cygni)

Fawaris, also designated as δ Cygni (delta Cygni), is a variable and multiple sub-giant star in the constellation of Cygnus.

Fawaris visual magnitude is 2.87. Thanks to its high brightness, Fawaris is clearly visible when observed from locations with dark skyes, and should be also quite easily visible from light polluted areas.

The table below summarizes the key facts about Fawaris:

Color of Fawaris ⬤

Magnitude of Fawaris 2.87

Class Sub-giant

VISIBILITY RIGHT NOW Fawaris - δ Cygni (delta Cygni) is above the horizon from Greenwich, United Kingdom [change]. Altitude: 43°.

Celestial coordinates and finder chart of Fawaris

Fawaris 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 Fawaris are provided in the following table:

Right Ascension J2000 19h 44m 58s

Declination J2000 +45° 07’ 50”

Galactic Longitude 78.71°

Galactic Latitude 10.24°

Constellation Cygnus

The simplified sky map below shows the position of Fawaris in the sky:

Finder chart Fawaris - δ Cygni (delta Cygni) star

Simplified finder chart for Fawaris - δ Cygni (delta Cygni).

Visibility of Fawaris from your location

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

Fawaris - δ Cygni (delta Cygni) is circumpolar and transits at 07:23 UTC (altitude: 83.7°)

Digitized Sky Survey image of Fawaris

The image below is a photograph of Fawaris 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 Fawaris is 0.053 arcsec per year in Right Ascension and 0.047 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of Fawaris - δ Cygni (delta Cygni) star

DSS2 image of Fawaris. The red arrow shows the motion of Fawaris during the next 10000 years (8.83 arcmin in Right Ascension and 7.83 arcmin in declination);

Distance of Fawaris from the Sun and relative movement

Fawaris is distant 170.95 light years from the Sun and it is moving towards the Sun at the speed of 20 kilometers per second.

Distance (parsec) 52.44 pc

Distance (light year) 170.95 ly

Heliocentric radial velocity -20 km/s

Proper Motion RA 0.053 arcsec/year

Proper Motion Dec 0.047 arcsec/year

Spectral properties of Fawaris

Fawaris belongs to spectral class B9 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude -0.73

Spectral Type B9IV

Color Index (B-V) -0.03

Temperature of Fawaris 10516K

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

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

Fawaris star system properties

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

Main star magnitude 2.87

Secondary star magnitude 6.37

Magnitude difference 3.5

Separation 2 arcsec

Alternative designations of Fawaris

Proper Name Fawaris

Bayer designation δ Cygni
(delta Cygni)

Flamsteed designation 18 Cygni

Henry Draper Catalogue HD186882

SAO Catalogue SAO48796

Hipparcos Catalogue HIP97165

Durchmusterung Catalogue BD+44 3234

General Catalogue of Variable Stars 12380/1

Aitken Double Star Catalogue ADS12880

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