HR7911

Altitude: 48.7° Azimuth: 81.2° Direction: East

HR7911 is a multiple giant star in the constellation of Cygnus.

HR7911 visual magnitude is 6.06. Because of its reltive faintness, HR7911 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 HR7911:

Color of HR7911 ⬤

Magnitude of HR7911 6.06

Class Giant

VISIBILITY RIGHT NOW

HR7911 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 48.7°
Azimuth: 81.2°
Direction: East

Celestial coordinates and finder chart of HR7911

HR7911 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 HR7911 are provided in the following table:

Right Ascension J2000 20h 39m 33s

Declination J2000 +40° 34’ 45”

Galactic Longitude 80.35°

Galactic Latitude -0.61°

Constellation Cygnus

The simplified sky map below shows the position of HR7911 in the sky:

Simplified finder chart for HR7911.

Visibility of HR7911 from your location

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

HR7911 is circumpolar and transits at 20:37 UTC (altitude: 79.1°)

Digitized Sky Survey image of HR7911

The image below is a photograph of HR7911 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 HR7911 is 0.007 arcsec per year in Right Ascension and 0 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of HR7911. The red arrow shows the motion of HR7911 during the next 100000 years (11.67 arcmin in Right Ascension and 0.00 arcmin in declination);

Distance of HR7911 from the Sun and relative movement

HR7911 is distant 898.07 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

Distance (parsec) 275.48 pc

Distance (light year) 898.07 ly

Heliocentric radial velocity -15 km/s

Proper Motion RA 0.007 arcsec/year

Spectral properties of HR7911

HR7911 belongs to spectral class B6 and has a luminosity class of III corresponding to a giant star. HR7911 is also a Mn chemically peculiar star.

Absolute magnitude -1.14

Spectral Type B6III

Color Index (B-V) -0.16

Temperature of HR7911 12692K

The red dot in the diagram below shows where HR7911 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7911. Attribution: Richard Powell / CC BY-SA

HR7911 star system properties

HR7911 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR7911 double sysyem:

Main star magnitude 6.06

Secondary star magnitude 6.16

Magnitude difference 0.1

Separation 0.8 arcsec

Alternative designations of HR7911

Henry Draper Catalogue HD197018

SAO Catalogue SAO49899

Hipparcos Catalogue HIP101949

Durchmusterung Catalogue BD+40 4266

Aitken Double Star Catalogue ADS14126

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In Evidence

Other stars in Cygnus