We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Your support helps us pay the server bills » Donate
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:52  
clear_day Transit: 12:11  
SunsetSet: 17:31
sunny DaytimeWhat's Visible Now?
All Constellations » Antlia » 


Altitude: -58.4°   Azimuth: 55.0°   Direction: North-East

HR4003 is a double main-sequence star in the constellation of Antlia.

HR4003 visual magnitude is 6.28. Because of its reltive faintness, HR4003 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR4003 is -0.026 arcsec per year in Right Ascension and -0.014 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4003 star
DSS2 image of HR4003. The red arrow shows the motion of HR4003 during the next 10000 years (-4.33 arcmin in Right Ascension and -2.33 arcmin in declination);

Key facts about HR4003


HR4003 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -58.4°
Azimuth: 55.0°
Direction: North-East

Celestial coordinates and finder chart of HR4003

HR4003 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 HR4003 are provided in the following table:

10h 12m 02s
-28° 36’ 23”

The simplified sky map below shows the position of HR4003 in the sky:

Finder chart HR4003 star
Simplified finder chart for HR4003.

Visibility of HR4003 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 HR4003 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: 118.6°
Max altitude: 9.9°
Azimuth: 241.4°

Distance of HR4003 from the Sun and relative movement

HR4003 is distant 509.38 light years from the Sun and it is moving far from the Sun at the speed of 18 kilometers per second.

156.25 pc
509.38 ly
18 km/s
-0.026 arcsec/year
-0.014 arcsec/year

Spectral properties of HR4003

HR4003 belongs to spectral class A1 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR4003 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR4003. Attribution: Richard Powell / CC BY-SA

HR4003 star system properties

HR4003 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 HR4003 double sysyem:

0.1 arcsec

Alternative designations of HR4003