HR7670

HR7670 is a double sub-giant star in the constellation of Cygnus.

HR7670 visual magnitude is 5.71. Because of its reltive faintness, HR7670 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 HR7670:

Color of HR7670 ⬤

Magnitude of HR7670 5.71

Class Sub-giant

VISIBILITY RIGHT NOW HR7670 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 50°.

Celestial coordinates and finder chart of HR7670

HR7670 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 HR7670 are provided in the following table:

Right Ascension J2000 20h 03m 37s

Declination J2000 +29° 53’ 48”

Galactic Longitude 67.41°

Galactic Latitude -0.66°

Constellation Cygnus

The simplified sky map below shows the position of HR7670 in the sky:

Simplified finder chart for HR7670.

Visibility of HR7670 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 HR7670 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: 60.1° RISE 19:28

Max altitude: 68.4° TRANSIT 4:34

Azimuth: 299.9° SET 13:36

RIGHT NOW HR7670 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR7670

The image below is a photograph of HR7670 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 HR7670 is 0.683 arcsec per year in Right Ascension and -0.526 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of HR7670. The red arrow shows the motion of HR7670 during the next 1000 years (11.38 arcmin in Right Ascension and -8.77 arcmin in declination);

Distance of HR7670 from the Sun and relative movement

HR7670 is distant 51.81 light years from the Sun and it is moving towards the Sun at the speed of 45 kilometers per second.

Distance (parsec) 15.89 pc

Distance (light year) 51.81 ly

Heliocentric radial velocity -45 km/s

Proper Motion RA 0.683 arcsec/year

Proper Motion Dec -0.526 arcsec/year

Spectral properties of HR7670

HR7670 belongs to spectral class G6 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude 4.70

Spectral Type G6IV

Color Index (B-V) 0.73

Temperature of HR7670 5501K

The red dot in the diagram below shows where HR7670 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7670. Attribution: Richard Powell / CC BY-SA

HR7670 star system properties

HR7670 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR7670 double sysyem:

Main star magnitude 5.71

Secondary star magnitude 15.51

Magnitude difference 9.8

Separation 179 arcsec

Alternative designations of HR7670

Henry Draper Catalogue HD190360

SAO Catalogue SAO88133

Hipparcos Catalogue HIP98767

Durchmusterung Catalogue BD+29 3872

Gliese Catalogue Gl 777 A

In Evidence

Other stars in Cygnus