Your Guide to the Solar System and the Night Sky
Donate now! You'll help cover server costs, enhance the site and keep it ad-free.
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:46  
clear_day Transit: 12:57  
SunsetSet: 21:08 south
wb_twilight Astronomical TwilightWhat's Visible Now
All Constellations » Hercules » 


Altitude: 50.5°   Azimuth: 137.5°   Direction: South-East

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:


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

Altitude: 50.5°
Azimuth: 137.5°
Direction: South-East

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:

18h 35m 12s
+18° 12’ 11”

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

Finder chart HR6977 star
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°
Max altitude: 56.7°
Azimuth: 288.2°
HR6977 is above the horizon from Greenwich, United Kingdom

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.

Image of HR6977 star
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.

207.47 pc
676.35 ly
-21 km/s
0.014 arcsec/year
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.


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

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

Alternative designations of HR6977