HR7684

HR7684 is a sub-giant star in the constellation of Cygnus.

HR7684 visual magnitude is 6.16. Because of its reltive faintness, HR7684 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 HR7684:

Color of HR7684 ⬤

Magnitude of HR7684 6.16

Class Sub-giant

VISIBILITY RIGHT NOW HR7684 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 49°.

Celestial coordinates and finder chart of HR7684

HR7684 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 HR7684 are provided in the following table:

Right Ascension J2000 20h 04m 28s

Declination J2000 +48° 13’ 46”

Galactic Longitude 83.12°

Galactic Latitude 8.88°

Constellation Cygnus

The simplified sky map below shows the position of HR7684 in the sky:

Simplified finder chart for HR7684.

Visibility of HR7684 from your location

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

HR7684 is circumpolar and transits at 07:38 UTC (altitude: 86.7°)

Digitized Sky Survey image of HR7684

The image below is a photograph of HR7684 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 HR7684 is 0.011 arcsec per year in Right Ascension and 0.004 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR7684. The red arrow shows the motion of HR7684 during the next 10000 years (1.83 arcmin in Right Ascension and 0.67 arcmin in declination);

Distance of HR7684 from the Sun and relative movement

HR7684 is distant 579.04 light years from the Sun and it is moving towards the Sun at the speed of 14 kilometers per second.

Distance (parsec) 177.62 pc

Distance (light year) 579.04 ly

Heliocentric radial velocity -14 km/s

Proper Motion RA 0.011 arcsec/year

Proper Motion Dec 0.004 arcsec/year

Spectral properties of HR7684

HR7684 belongs to spectral class A2 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude -0.09

Spectral Type A2IV

Color Index (B-V) 0.04

Temperature of HR7684 9652K

The red dot in the diagram below shows where HR7684 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7684. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7684

Henry Draper Catalogue HD190781

SAO Catalogue SAO49152

Hipparcos Catalogue HIP98858

Durchmusterung Catalogue BD+47 3004

FK5 Catalogue 3610

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Other stars in Cygnus