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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: 7:37  
clear_day Transit: 11:46  
SunsetSet: 15:55 south
sunny DaytimeWhat's Visible Now?
All Constellations » Aquarius » 


Altitude: -14.0°   Azimuth: 110.6°   Direction: East-South-East

HR8542 is a hypergiant star in the constellation of Aquarius.

HR8542 visual magnitude is 6.29. Because of its reltive faintness, HR8542 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 HR8542:


HR8542 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -14.0°
Azimuth: 110.6°
Direction: East-South-East

Celestial coordinates and finder chart of HR8542

HR8542 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR8542 are provided in the following table:

22h 26m 10s
-23° 40’ 57”

The simplified sky map below shows the position of HR8542 in the sky:

Finder chart HR8542 star
Simplified finder chart for HR8542.

Visibility of HR8542 from your location

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

Today's HR8542 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 113.7°
Max altitude: 14.8°
Azimuth: 246.3°

Digitized Sky Survey image of HR8542

The image below is a photograph of HR8542 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 HR8542 is 0.018 arcsec per year in Right Ascension and -0.002 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8542 star
DSS2 image of HR8542. The red arrow shows the motion of HR8542 during the next 10000 years (3.00 arcmin in Right Ascension and -0.33 arcmin in declination);

Distance of HR8542 from the Sun and relative movement

HR8542 is distant 494.69 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

151.75 pc
494.69 ly
-15 km/s
0.018 arcsec/year
-0.002 arcsec/year

Spectral properties of HR8542

HR8542 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 HR8542 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8542. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8542