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public LocationGreenwich, UK
Sunrise: 5:07 
Transit: 13:06 
Sunset: 21:04
wb_twilight   (Nautical Twilight)   What's Visible Now?
All Constellations » Cancer » 


Below the horizon.  Rise: 4:35 | Tran: 13:15 | Set: 21:56
Alt: -5.14°   Az: 31.08°   Direction: North-North-East

HR3164 is a variable and double hypergiant star of spectral class A0 in the constellation of Cancer.

HR3164 visual magnitude is 6.21. Because of its faintness, HR3164 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

HR3164 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere.

Image of HR3164 star
DSS2 image of HR3164. The red arrow shows the motion of HR3164 during the next 100000 years (0.00 arcmin in Right Ascension and -15.00 arcmin in declination);

Celestial Coordinates


08h 07m 07s
+27° 27’ 29”
14h 21m 39s
22h 28m 46s


08h 05m 36s
+27° 31’ 46”

Galactic Coordinates


Finder Chart

Finder chart HR3164 star
Simplified finder chart for HR3164.

Magnitude, Color, Spectral Class



The red dot in the diagram below shows where HR3164 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3164. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR3164 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR3164 double sysyem:

3.7 arcsec

Distance, Radial Speed, Proper Motion

HR3164 is distant 934.10 light years from the Sun and it is moving towards the Sun at the speed of 17 kilometers per second.

286.53 pc
934.10 ly
-17 km/s
-0.009 "/y

Alternative Designations


Visibility from Your Location

Today's HR3164 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 62.5°
Max altitude: 66.0°
Azimuth: 297.5°