15 Cygni

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

15 Cygni visual magnitude is 4.89. Because of its moderate brightness, 15 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 15 Cygni:

Color of 15 Cygni ⬤

Magnitude of 15 Cygni 4.89

Class Giant

VISIBILITY RIGHT NOW 15 Cygni is above the horizon from Greenwich, United Kingdom [change]. Altitude: 18°.

Celestial coordinates and finder chart of 15 Cygni

15 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 15 Cygni are provided in the following table:

Right Ascension J2000 19h 44m 16s

Declination J2000 +37° 21’ 15”

Galactic Longitude 71.76°

Galactic Latitude 6.6°

Constellation Cygnus

The simplified sky map below shows the position of 15 Cygni in the sky:

Simplified finder chart for 15 Cygni.

Visibility of 15 Cygni from your location

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

Today's 15 Cygni rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 52.6° RISE 21:12

Max altitude: 75.9° TRANSIT 8:06

Azimuth: 307.4° SET 18:57

RIGHT NOW 15 Cygni is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 15 Cygni

The image below is a photograph of 15 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 15 Cygni is 0.075 arcsec per year in Right Ascension and 0.035 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 15 Cygni. The red arrow shows the motion of 15 Cygni during the next 10000 years (12.50 arcmin in Right Ascension and 5.83 arcmin in declination);

Distance of 15 Cygni from the Sun and relative movement

15 Cygni is distant 278.63 light years from the Sun and it is moving towards the Sun at the speed of 24 kilometers per second.

Distance (parsec) 85.47 pc

Distance (light year) 278.63 ly

Heliocentric radial velocity -24 km/s

Proper Motion RA 0.075 arcsec/year

Proper Motion Dec 0.035 arcsec/year

Spectral properties of 15 Cygni

15 Cygni belongs to spectral class G7 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 0.23

Spectral Type G7III

Color Index (B-V) 0.95

Temperature of 15 Cygni 4866K

The red dot in the diagram below shows where 15 Cygni is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 15 Cygni. Attribution: Richard Powell / CC BY-SA

Alternative designations of 15 Cygni

Flamsteed designation 15 Cygni

Henry Draper Catalogue HD186675

SAO Catalogue SAO68778

Hipparcos Catalogue HIP97118

Durchmusterung Catalogue BD+37 3586

FK5 Catalogue 740

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In Evidence

Other stars in Cygnus