Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:02  
clear_day Transit: 12:47  
SunsetSet: 18:32 south
sunny DaytimeWhat's Visible Now
All Constellations » Cassiopeia » 


Altitude: 54.0°   Azimuth: 332.6°   Direction: North-North-West

HR1055 is a hypergiant star in the constellation of Cassiopeia.

HR1055 visual magnitude is 6.57. Because of its reltive faintness, HR1055 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 HR1055:


HR1055 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 54.0°
Azimuth: 332.6°
Direction: North-North-West

Celestial coordinates and finder chart of HR1055

HR1055 is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR1055 are provided in the following table:

03h 35m 12s
+73° 20’ 48”

The simplified sky map below shows the position of HR1055 in the sky:

Finder chart HR1055 star
Simplified finder chart for HR1055.

Visibility of HR1055 from your location

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

HR1055 is circumpolar and transits at 02:48 UTC (altitude: 68.1°)

Digitized Sky Survey image of HR1055

The image below is a photograph of HR1055 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 HR1055 is 0.013 arcsec per year in Right Ascension and -0.026 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR1055 star
DSS2 image of HR1055. The red arrow shows the motion of HR1055 during the next 10000 years (2.17 arcmin in Right Ascension and -4.33 arcmin in declination);

Distance of HR1055 from the Sun and relative movement

HR1055 is distant 615.09 light years from the Sun and it is moving towards the Sun at the speed of 9 kilometers per second.

188.68 pc
615.09 ly
-9 km/s
0.013 arcsec/year
-0.026 arcsec/year

Spectral properties of HR1055

HR1055 belongs to spectral class A0 and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where HR1055 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR1055. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR1055