70 Cygni

70 Cygni is a main-sequence star in the constellation of Cygnus.

70 Cygni visual magnitude is 5.31. Because of its reltive faintness, 70 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 70 Cygni:

Color of 70 Cygni ⬤

Magnitude of 70 Cygni 5.31

Class Main-sequence

VISIBILITY RIGHT NOW 70 Cygni is above the horizon from Greenwich, United Kingdom [change]. Altitude: 66°.

Celestial coordinates and finder chart of 70 Cygni

70 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 70 Cygni are provided in the following table:

Right Ascension J2000 21h 27m 21s

Declination J2000 +37° 07’ 00”

Galactic Longitude 83.94°

Galactic Latitude -9.86°

Constellation Cygnus

The simplified sky map below shows the position of 70 Cygni in the sky:

Simplified finder chart for 70 Cygni.

Visibility of 70 Cygni from your location

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

Today's 70 Cygni rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 52.9° RISE 23:01

Max altitude: 75.6° TRANSIT 9:49

Azimuth: 307.1° SET 20:33

RIGHT NOW 70 Cygni is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 70 Cygni

The image below is a photograph of 70 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 70 Cygni is 0 arcsec per year in Right Ascension and 0.002 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of 70 Cygni. The red arrow shows the motion of 70 Cygni during the next 100000 years (0.00 arcmin in Right Ascension and 3.33 arcmin in declination);

Distance of 70 Cygni from the Sun and relative movement

70 Cygni is distant 1,771.74 light years from the Sun and it is moving towards the Sun at the speed of 20 kilometers per second.

Distance (parsec) 543.48 pc

Distance (light year) 1,771.74 ly

Heliocentric radial velocity -20 km/s

Proper Motion Dec 0.002 arcsec/year

Spectral properties of 70 Cygni

70 Cygni belongs to spectral class B3 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude -3.37

Spectral Type B3V

Color Index (B-V) -0.14

Temperature of 70 Cygni 12293K

The red dot in the diagram below shows where 70 Cygni is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 70 Cygni. Attribution: Richard Powell / CC BY-SA

Alternative designations of 70 Cygni

Flamsteed designation 70 Cygni

Henry Draper Catalogue HD204403

SAO Catalogue SAO71358

Hipparcos Catalogue HIP105942

Durchmusterung Catalogue BD+36 4568

FK5 Catalogue 3714

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In Evidence

Other stars in Cygnus