75 Cygni

Altitude: 5.4° Azimuth: 350.6° Direction: North

75 Cygni is a variable and multiple giant star in the constellation of Cygnus.

75 Cygni visual magnitude is 5.11. Because of its reltive faintness, 75 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 75 Cygni:

Color of 75 Cygni ⬤

Magnitude of 75 Cygni 5.11

Class Giant

VISIBILITY RIGHT NOW

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

Altitude: 5.4°
Azimuth: 350.6°
Direction: North

Celestial coordinates and finder chart of 75 Cygni

75 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 75 Cygni are provided in the following table:

Right Ascension J2000 21h 40m 11s

Declination J2000 +43° 16’ 26”

Galactic Longitude 90°

Galactic Latitude -7.04°

Constellation Cygnus

The simplified sky map below shows the position of 75 Cygni in the sky:

Simplified finder chart for 75 Cygni.

Visibility of 75 Cygni from your location

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

75 Cygni is circumpolar and transits at 20:58 UTC (altitude: 81.8°)

Digitized Sky Survey image of 75 Cygni

The image below is a photograph of 75 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 75 Cygni is 0.063 arcsec per year in Right Ascension and 0.016 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 75 Cygni. The red arrow shows the motion of 75 Cygni during the next 10000 years (10.50 arcmin in Right Ascension and 2.67 arcmin in declination);

Distance of 75 Cygni from the Sun and relative movement

75 Cygni is distant 404.47 light years from the Sun and it is moving towards the Sun at the speed of 28 kilometers per second.

Distance (parsec) 124.07 pc

Distance (light year) 404.47 ly

Heliocentric radial velocity -28 km/s

Proper Motion RA 0.063 arcsec/year

Proper Motion Dec 0.016 arcsec/year

Spectral properties of 75 Cygni

75 Cygni belongs to spectral class M1 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude -0.36

Spectral Type M1III

Color Index (B-V) 1.6

Temperature of 75 Cygni 3649K

The red dot in the diagram below shows where 75 Cygni is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 75 Cygni. Attribution: Richard Powell / CC BY-SA

75 Cygni star system properties

75 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 75 Cygni double sysyem:

Main star magnitude 5.11

Secondary star magnitude 9.31

Magnitude difference 4.2

Separation 57.9 arcsec

Alternative designations of 75 Cygni

Flamsteed designation 75 Cygni

Henry Draper Catalogue HD206330

SAO Catalogue SAO51167

Hipparcos Catalogue HIP106999

Durchmusterung Catalogue BD+42 4177

FK5 Catalogue 3730

General Catalogue of Variable Stars 13834

Aitken Double Star Catalogue ADS15208

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In Evidence

Other stars in Cygnus