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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: 5:43  
clear_day Transit: 12:56  
SunsetSet: 20:10
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All Constellations » Antlia » 


Altitude: -24.8°   Azimuth: 124.4°   Direction: South-East

HR4015 is a double giant star in the constellation of Antlia.

HR4015 visual magnitude is 5.9. Because of its reltive faintness, HR4015 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 HR4015 is -0.078 arcsec per year in Right Ascension and 0.017 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4015 star
DSS2 image of HR4015. The red arrow shows the motion of HR4015 during the next 10000 years (-13.00 arcmin in Right Ascension and 2.83 arcmin in declination);

Key facts about HR4015


HR4015 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -24.8°
Azimuth: 124.4°
Direction: South-East

Celestial coordinates and finder chart of HR4015

HR4015 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 HR4015 are provided in the following table:

10h 13m 45s
-40° 20’ 44”

The simplified sky map below shows the position of HR4015 in the sky:

Finder chart HR4015 star
Simplified finder chart for HR4015.

Visibility of HR4015 from your location

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

HR4015 is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of HR4015 from the Sun and relative movement

HR4015 is distant 450.28 light years from the Sun and it is moving far from the Sun at the speed of 18 kilometers per second.

138.12 pc
450.28 ly
18 km/s
-0.078 arcsec/year
0.017 arcsec/year

Spectral properties of HR4015

HR4015 belongs to spectral class K1 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR4015 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR4015. Attribution: Richard Powell / CC BY-SA

HR4015 star system properties

HR4015 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 HR4015 double sysyem:

4.7 arcsec

Alternative designations of HR4015