HR7109

HR7109 is a variable main-sequence star in the constellation of Hercules.

HR7109 visual magnitude is 6.14. Because of its reltive faintness, HR7109 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 HR7109:

Color of HR7109 ⬤

Magnitude of HR7109 6.14

Class Main-sequence

VISIBILITY RIGHT NOW HR7109 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 52°.

Celestial coordinates and finder chart of HR7109

HR7109 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR7109 are provided in the following table:

Right Ascension J2000 18h 52m 01s

Declination J2000 +13° 57’ 56”

Galactic Longitude 45.48°

Galactic Latitude 6.19°

Constellation Hercules

The simplified sky map below shows the position of HR7109 in the sky:

Simplified finder chart for HR7109.

Visibility of HR7109 from your location

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

Today's HR7109 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 76.0° RISE 0:15

Max altitude: 52.5° TRANSIT 7:30

Azimuth: 284.0° SET 14:40

RIGHT NOW HR7109 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR7109

The image below is a photograph of HR7109 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 HR7109 is -0.011 arcsec per year in Right Ascension and -0.005 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR7109. The red arrow shows the motion of HR7109 during the next 10000 years (-1.83 arcmin in Right Ascension and -0.83 arcmin in declination);

Distance of HR7109 from the Sun and relative movement

HR7109 is distant 799.02 light years from the Sun and it is moving towards the Sun at the speed of 29 kilometers per second.

Distance (parsec) 245.10 pc

Distance (light year) 799.02 ly

Heliocentric radial velocity -29 km/s

Proper Motion RA -0.011 arcsec/year

Proper Motion Dec -0.005 arcsec/year

Spectral properties of HR7109

HR7109 belongs to spectral class B8 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude -0.81

Spectral Type B8V

Color Index (B-V) 0

Temperature of HR7109 10125K

The red dot in the diagram below shows where HR7109 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7109. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7109

Henry Draper Catalogue HD174853

SAO Catalogue SAO104196

Hipparcos Catalogue HIP92593

Durchmusterung Catalogue BD+13 3787

FK5 Catalogue 3503

General Catalogue of Variable Stars V822 Her

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In Evidence

Other stars in Hercules