HR6981

Altitude: -0.2° Azimuth: 61.8° Direction: East-North-East

HR6981 is a variable and multiple main-sequence star in the constellation of Hercules.

HR6981 visual magnitude is 6.21. Because of its reltive faintness, HR6981 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 HR6981:

Color of HR6981 ⬤

Magnitude of HR6981 6.21

Class Main-sequence

VISIBILITY RIGHT NOW

HR6981 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -0.2°
Azimuth: 61.8°
Direction: East-North-East

Celestial coordinates and finder chart of HR6981

HR6981 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 HR6981 are provided in the following table:

Right Ascension J2000 18h 35m 53s

Declination J2000 +16° 58’ 32”

Galactic Longitude 46.5°

Galactic Latitude 11°

Constellation Hercules

The simplified sky map below shows the position of HR6981 in the sky:

Simplified finder chart for HR6981.

Visibility of HR6981 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 HR6981 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: 73.0° RISE 6:27

Max altitude: 55.5° TRANSIT 13:55

Azimuth: 287.0° SET 21:22

Digitized Sky Survey image of HR6981

The image below is a photograph of HR6981 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 HR6981 is 0.049 arcsec per year in Right Ascension and -0.068 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR6981. The red arrow shows the motion of HR6981 during the next 10000 years (8.17 arcmin in Right Ascension and -11.33 arcmin in declination);

Distance of HR6981 from the Sun and relative movement

HR6981 is distant 111.53 light years from the Sun and it is moving far from the Sun at the speed of 10 kilometers per second.

Distance (parsec) 34.21 pc

Distance (light year) 111.53 ly

Heliocentric radial velocity 10 km/s

Proper Motion RA 0.049 arcsec/year

Proper Motion Dec -0.068 arcsec/year

Spectral properties of HR6981

HR6981 belongs to spectral class G2 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude 3.54

Spectral Type G2V

Color Index (B-V) 0.53

Temperature of HR6981 6256K

The red dot in the diagram below shows where HR6981 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR6981. Attribution: Richard Powell / CC BY-SA

HR6981 star system properties

HR6981 is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the HR6981 double sysyem:

Main star magnitude 6.21

Secondary star magnitude 6.41

Magnitude difference 0.2

Separation 1.8 arcsec

Alternative designations of HR6981

Henry Draper Catalogue HD171746

SAO Catalogue SAO103886

Hipparcos Catalogue HIP91159

Durchmusterung Catalogue BD+16 3560

General Catalogue of Variable Stars 11085

Aitken Double Star Catalogue ADS11483

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In Evidence

Other stars in Hercules