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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: 7:38  
clear_day Transit: 11:46  
SunsetSet: 15:54 south
sunny DaytimeWhat's Visible Now?
All Constellations » Cassiopeia » 


Altitude: 20.3°   Azimuth: 36.4°   Direction: North-East

HR189 is a main-sequence star in the constellation of Cassiopeia.

HR189 visual magnitude is 5.67. Because of its reltive faintness, HR189 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 HR189:


HR189 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 20.3°
Azimuth: 36.4°
Direction: North-East

Celestial coordinates and finder chart of HR189

HR189 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 HR189 are provided in the following table:

00h 44m 26s
+47° 51’ 51”

The simplified sky map below shows the position of HR189 in the sky:

Finder chart HR189 star
Simplified finder chart for HR189.

Visibility of HR189 from your location

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

HR189 is circumpolar and transits at 20:10 UTC (altitude: 86.4°)

Digitized Sky Survey image of HR189

The image below is a photograph of HR189 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 HR189 is -0.026 arcsec per year in Right Ascension and 0.015 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR189 star
DSS2 image of HR189. The red arrow shows the motion of HR189 during the next 10000 years (-4.33 arcmin in Right Ascension and 2.50 arcmin in declination);

Distance of HR189 from the Sun and relative movement

HR189 is distant 759.91 light years from the Sun and it is moving towards the Sun at the speed of 60 kilometers per second.

233.10 pc
759.91 ly
-60 km/s
-0.026 arcsec/year
0.015 arcsec/year

Spectral properties of HR189

HR189 belongs to spectral class B5 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR189 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR189. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR189