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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: 7:40  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
sleep NighttimeWhat's Visible Now?
All Constellations » Sculptor » 


Altitude: -15.2°   Azimuth: 236.4°   Direction: West-South-West

HR423 is a variable and double bright giant star in the constellation of Sculptor.

HR423 visual magnitude is 5.79. Because of its reltive faintness, HR423 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 HR423:

Bright giant

HR423 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -15.2°
Azimuth: 236.4°
Direction: West-South-West

Celestial coordinates and finder chart of HR423

HR423 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR423 are provided in the following table:

01h 26m 58s
-32° 32’ 35”

The simplified sky map below shows the position of HR423 in the sky:

Finder chart HR423 star
Simplified finder chart for HR423.

Visibility of HR423 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 HR423 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: 122.5°
Max altitude: 6.0°
Azimuth: 237.5°

Digitized Sky Survey image of HR423

The image below is a photograph of HR423 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 HR423 is -0.011 arcsec per year in Right Ascension and -0.031 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR423 star
DSS2 image of HR423. The red arrow shows the motion of HR423 during the next 10000 years (-1.83 arcmin in Right Ascension and -5.17 arcmin in declination);

Distance of HR423 from the Sun and relative movement

HR423 is distant 1,545.02 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.

473.93 pc
1,545.02 ly
-8 km/s
-0.011 arcsec/year
-0.031 arcsec/year

Spectral properties of HR423

HR423 belongs to spectral class C6 and has a luminosity class of II corresponding to a bright giant star.


The red dot in the diagram below shows where HR423 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR423. Attribution: Richard Powell / CC BY-SA

HR423 star system properties

HR423 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR423 double sysyem:

10 arcsec

Alternative designations of HR423