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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: 7:51  
clear_day Transit: 11:50  
SunsetSet: 15:49 south
sleep NighttimeWhat's Visible Now?
All Constellations » Andromeda » 


Altitude: 77.8°   Azimuth: 284.1°   Direction: West-North-West

HR8801 is a hypergiant star in the constellation of Andromeda.

HR8801 visual magnitude is 6.11. Because of its reltive faintness, HR8801 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 HR8801:


HR8801 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 77.8°
Azimuth: 284.1°
Direction: West-North-West

Celestial coordinates and finder chart of HR8801

HR8801 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 HR8801 are provided in the following table:

23h 07m 10s
+52° 48’ 59”

The simplified sky map below shows the position of HR8801 in the sky:

Finder chart HR8801 star
Simplified finder chart for HR8801.

Visibility of HR8801 from your location

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

HR8801 is circumpolar and transits at 17:54 UTC (altitude: 88.7°)

Digitized Sky Survey image of HR8801

The image below is a photograph of HR8801 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 HR8801 is 0.013 arcsec per year in Right Ascension and 0.006 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8801 star
DSS2 image of HR8801. The red arrow shows the motion of HR8801 during the next 10000 years (2.17 arcmin in Right Ascension and 1.00 arcmin in declination);

Distance of HR8801 from the Sun and relative movement

HR8801 is distant 423.38 light years from the Sun and it is moving far from the Sun at the speed of 5 kilometers per second.

129.87 pc
423.38 ly
5 km/s
0.013 arcsec/year
0.006 arcsec/year

Spectral properties of HR8801

HR8801 belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where HR8801 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8801. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8801