HR6977

Altitude: 4.6° Azimuth: 293.8° Direction: West-North-West

HR6977 is a hypergiant star in the constellation of Hercules.

HR6977 visual magnitude is 5.78. Because of its reltive faintness, HR6977 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 HR6977:

Color of HR6977 ⬤

Magnitude of HR6977 5.78

Class Hypergiant

VISIBILITY RIGHT NOW

HR6977 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 4.6°
Azimuth: 293.8°
Direction: West-North-West

Celestial coordinates and finder chart of HR6977

HR6977 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 HR6977 are provided in the following table:

Right Ascension J2000 18h 35m 12s

Declination J2000 +18° 12’ 11”

Galactic Longitude 47.56°

Galactic Latitude 11.67°

Constellation Hercules

The simplified sky map below shows the position of HR6977 in the sky:

Simplified finder chart for HR6977.

Visibility of HR6977 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 HR6977 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: 71.8° RISE 6:23

Max altitude: 56.7° TRANSIT 13:58

Azimuth: 288.2° SET 21:33

Digitized Sky Survey image of HR6977

The image below is a photograph of HR6977 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 HR6977 is 0.014 arcsec per year in Right Ascension and 0.006 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR6977. The red arrow shows the motion of HR6977 during the next 10000 years (2.33 arcmin in Right Ascension and 1.00 arcmin in declination);

Distance of HR6977 from the Sun and relative movement

HR6977 is distant 676.35 light years from the Sun and it is moving towards the Sun at the speed of 21 kilometers per second.

Distance (parsec) 207.47 pc

Distance (light year) 676.35 ly

Heliocentric radial velocity -21 km/s

Proper Motion RA 0.014 arcsec/year

Proper Motion Dec 0.006 arcsec/year

Spectral properties of HR6977

HR6977 belongs to spectral class A0 and has a luminosity class of V corresponding to a hypergiant star.

Absolute magnitude -0.80

Spectral Type A0V

Color Index (B-V) 0

Temperature of HR6977 10125K

The red dot in the diagram below shows where HR6977 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR6977. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR6977

Henry Draper Catalogue HD171623

SAO Catalogue SAO103879

Hipparcos Catalogue HIP91118

Durchmusterung Catalogue BD+18 3740

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In Evidence

Other stars in Hercules