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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
SunriseRise: 7:03  
clear_day Transit: 12:12  
SunsetSet: 17:22
sleep NighttimeWhat's Visible Now?
All Constellations » Vela » 


Altitude: -6.0°   Azimuth: 162.1°   Direction: South-South-East

HR4023 is a main-sequence star in the constellation of Vela.

HR4023 visual magnitude is 3.85. Because of its moderate brightness, HR4023 should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The proper motion of HR4023 is -0.145 arcsec per year in Right Ascension and 0.045 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR4023 star
DSS2 image of HR4023. The red arrow shows the motion of HR4023 during the next 1000 years (-2.42 arcmin in Right Ascension and 0.75 arcmin in declination);

Key facts about HR4023


HR4023 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -6.0°
Azimuth: 162.1°
Direction: South-South-East

Celestial coordinates and finder chart of HR4023

HR4023 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 HR4023 are provided in the following table:

10h 14m 44s
-42° 07’ 18”

The simplified sky map below shows the position of HR4023 in the sky:

Finder chart HR4023 star
Simplified finder chart for HR4023.

Visibility of HR4023 from your location

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

HR4023 is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of HR4023 from the Sun and relative movement

HR4023 is distant 102.77 light years from the Sun and it is moving far from the Sun at the speed of 7 kilometers per second.

31.53 pc
102.77 ly
7 km/s
-0.145 arcsec/year
0.045 arcsec/year

Spectral properties of HR4023

HR4023 belongs to spectral class A2 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR4023 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR4023. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4023