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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 7:01  
clear_day Transit: 12:12  
SunsetSet: 17:24
sleep NighttimeWhat's Visible Now?
All Constellations » Lyra » 


Altitude: 17.1°   Azimuth: 42.2°   Direction: North-East

HR6845 is a sub-giant star in the constellation of Lyra.

HR6845 visual magnitude is 5.59. Because of its reltive faintness, HR6845 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The proper motion of HR6845 is 0.001 arcsec per year in Right Ascension and 0 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of HR6845 star
DSS2 image of HR6845. The red arrow shows the motion of HR6845 during the next 100000 years (1.67 arcmin in Right Ascension and 0.00 arcmin in declination);

Key facts about HR6845


HR6845 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 17.1°
Azimuth: 42.2°
Direction: North-East

Celestial coordinates and finder chart of HR6845

HR6845 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 HR6845 are provided in the following table:

18h 15m 38s
+42° 09’ 33”

The simplified sky map below shows the position of HR6845 in the sky:

Finder chart HR6845 star
Simplified finder chart for HR6845.

Visibility of HR6845 from your location

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

HR6845 is circumpolar and transits at 08:08 UTC (altitude: 80.7°)

Distance of HR6845 from the Sun and relative movement

HR6845 is distant 539.74 light years from the Sun and it is moving towards the Sun at the speed of 21 kilometers per second.

165.56 pc
539.74 ly
-21 km/s
0.001 arcsec/year

Spectral properties of HR6845

HR6845 belongs to spectral class B7 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR6845 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR6845. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR6845