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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
north SunriseRise: 7:47  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
sunny DaytimeWhat's Visible Now?
All Constellations » Cassiopeia » 


Altitude: 12.8°   Azimuth: 15.5°   Direction: North-North-East

HR164 is a double giant star in the constellation of Cassiopeia.

HR164 visual magnitude is 5.43. Because of its reltive faintness, HR164 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 HR164:


HR164 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 12.8°
Azimuth: 15.5°
Direction: North-North-East

Celestial coordinates and finder chart of HR164

HR164 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 HR164 are provided in the following table:

00h 39m 09s
+49° 21’ 15”

The simplified sky map below shows the position of HR164 in the sky:

Finder chart HR164 star
Simplified finder chart for HR164.

Visibility of HR164 from your location

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

HR164 is circumpolar and transits at 19:41 UTC (altitude: 87.9°)

Digitized Sky Survey image of HR164

The image below is a photograph of HR164 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 HR164 is 0.008 arcsec per year in Right Ascension and -0.011 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR164 star
DSS2 image of HR164. The red arrow shows the motion of HR164 during the next 10000 years (1.33 arcmin in Right Ascension and -1.83 arcmin in declination);

Distance of HR164 from the Sun and relative movement

HR164 is distant 1,330.61 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.

408.16 pc
1,330.61 ly
-8 km/s
0.008 arcsec/year
-0.011 arcsec/year

Spectral properties of HR164

HR164 belongs to spectral class K7 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR164 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR164. Attribution: Richard Powell / CC BY-SA

HR164 star system properties

HR164 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 HR164 double sysyem:

13.3 arcsec

Alternative designations of HR164