φ Cygni (phi Cygni)

φ Cygni is a giant star in the constellation of Cygnus.

φ Cygni visual magnitude is 4.69. Because of its moderate brightness, φ 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 φ Cygni:

Color of φ Cygni ⬤

Magnitude of φ Cygni 4.69

Class Giant

VISIBILITY RIGHT NOW φ Cygni (phi Cygni) is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 23°.

Celestial coordinates and finder chart of φ Cygni

φ 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 φ Cygni are provided in the following table:

Right Ascension J2000 19h 39m 22s

Declination J2000 +30° 09’ 11”

Galactic Longitude 64.95°

Galactic Latitude 3.97°

Constellation Cygnus

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

Simplified finder chart for φ Cygni (phi Cygni).

Visibility of φ 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 φ Cygni (phi 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: 59.8° RISE 19:01

Max altitude: 68.7° TRANSIT 4:09

Azimuth: 300.2° SET 13:14

RIGHT NOW φ Cygni (phi Cygni) is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of φ Cygni

The image below is a photograph of φ 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 φ Cygni is 0.004 arcsec per year in Right Ascension and 0.037 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of φ Cygni. The red arrow shows the motion of φ Cygni during the next 10000 years (0.67 arcmin in Right Ascension and 6.17 arcmin in declination);

Distance of φ Cygni from the Sun and relative movement

φ Cygni is distant 250.77 light years from the Sun and it is moving far from the Sun at the speed of 6 kilometers per second.

Distance (parsec) 76.92 pc

Distance (light year) 250.77 ly

Heliocentric radial velocity 6 km/s

Proper Motion RA 0.004 arcsec/year

Proper Motion Dec 0.037 arcsec/year

Spectral properties of φ Cygni

φ Cygni belongs to spectral class G8 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 0.26

Spectral Type G8III

Color Index (B-V) 0.97

Temperature of φ Cygni 4816K

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

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

Alternative designations of φ Cygni

Bayer designation φ Cygni
(phi Cygni)

Flamsteed designation 12 Cygni

Henry Draper Catalogue HD185734

SAO Catalogue SAO68637

Hipparcos Catalogue HIP96683

Durchmusterung Catalogue BD+29 3684

FK5 Catalogue 3570

In Evidence

Other stars in Cygnus