HR7191

HR7191 is a multiple sub-giant star in the constellation of Draco.

HR7191 visual magnitude is 6.45. Because of its reltive faintness, HR7191 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 HR7191:

Color of HR7191 ⬤

Magnitude of HR7191 6.45

Class Sub-giant

VISIBILITY RIGHT NOW HR7191 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 54°.

Celestial coordinates and finder chart of HR7191

HR7191 is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR7191 are provided in the following table:

Right Ascension J2000 18h 57m 17s

Declination J2000 +62° 23’ 48”

Galactic Longitude 92.68°

Galactic Latitude 23.18°

Constellation Draco

The simplified sky map below shows the position of HR7191 in the sky:

Simplified finder chart for HR7191.

Visibility of HR7191 from your location

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

HR7191 is circumpolar and transits at 02:35 UTC (altitude: 79.1°)

Digitized Sky Survey image of HR7191

The image below is a photograph of HR7191 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 HR7191 is 0.006 arcsec per year in Right Ascension and -0.039 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR7191. The red arrow shows the motion of HR7191 during the next 10000 years (1.00 arcmin in Right Ascension and -6.50 arcmin in declination);

Distance of HR7191 from the Sun and relative movement

HR7191 is distant 304.67 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.

Distance (parsec) 93.46 pc

Distance (light year) 304.67 ly

Heliocentric radial velocity -8 km/s

Proper Motion RA 0.006 arcsec/year

Proper Motion Dec -0.039 arcsec/year

Spectral properties of HR7191

HR7191 belongs to spectral class G5 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude 1.60

Spectral Type G5IV

Color Index (B-V) 0.93

Temperature of HR7191 4917K

The red dot in the diagram below shows where HR7191 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7191. Attribution: Richard Powell / CC BY-SA

HR7191 star system properties

HR7191 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 HR7191 double sysyem:

Main star magnitude 6.45

Secondary star magnitude 9.25

Magnitude difference 2.8

Separation 17 arcsec

Alternative designations of HR7191

Henry Draper Catalogue HD176668

SAO Catalogue SAO18082

Hipparcos Catalogue HIP93053

Durchmusterung Catalogue BD+62 1669

Aitken Double Star Catalogue ADS11901

In Evidence

Other stars in Draco