Your guide to the Solar System and the night sky
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🌎  Observing from: Greenwich, United Kingdom [change]


HR6901 is a variable and multiple giant star in the constellation of Lyra.

HR6901 visual magnitude is 6.36. Because of its reltive faintness, HR6901 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 HR6901:

HR6901 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 22°.

Celestial coordinates and finder chart of HR6901

HR6901 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR6901 are provided in the following table:

18h 23m 57s
+38° 44’ 21”

The simplified sky map below shows the position of HR6901 in the sky:

Finder chart HR6901 star
Simplified finder chart for HR6901.

Visibility of HR6901 from your location

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

HR6901 is circumpolar and transits at 09:42 UTC (altitude: 77.3°)

Digitized Sky Survey image of HR6901

The image below is a photograph of HR6901 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 HR6901 is 0.027 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 HR6901 star
DSS2 image of HR6901. The red arrow shows the motion of HR6901 during the next 10000 years (4.50 arcmin in Right Ascension and 1.00 arcmin in declination);

Distance of HR6901 from the Sun and relative movement

HR6901 is distant 857.89 light years from the Sun and it is moving towards the Sun at the speed of 40 kilometers per second.

263.16 pc
857.89 ly
-40 km/s
0.027 arcsec/year
0.006 arcsec/year

Spectral properties of HR6901

HR6901 belongs to spectral class K4 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR6901 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR6901. Attribution: Richard Powell / CC BY-SA

HR6901 star system properties

HR6901 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR6901 double sysyem:

61.5 arcsec

Alternative designations of HR6901