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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: 6:38  
clear_day Transit: 12:10  
SunsetSet: 17:43
wb_twilight Astronomical TwilightWhat's Visible Now?
All Constellations » Crux » 


Altitude: -44.8°   Azimuth: 138.4°   Direction: South-East

HR4790 is a giant star in the constellation of Crux.

HR4790 visual magnitude is 6.22. Because of its reltive faintness, HR4790 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 HR4790 is -0.304 arcsec per year in Right Ascension and -0.084 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR4790 star
DSS2 image of HR4790. The red arrow shows the motion of HR4790 during the next 1000 years (-5.07 arcmin in Right Ascension and -1.40 arcmin in declination);

Key facts about HR4790


HR4790 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -44.8°
Azimuth: 138.4°
Direction: South-East

Celestial coordinates and finder chart of HR4790

HR4790 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 HR4790 are provided in the following table:

12h 35m 29s
-61° 50’ 30”

The simplified sky map below shows the position of HR4790 in the sky:

Finder chart HR4790 star
Simplified finder chart for HR4790.

Visibility of HR4790 from your location

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

HR4790 is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of HR4790 from the Sun and relative movement

HR4790 is distant 151.07 light years from the Sun and it is moving far from the Sun at the speed of 6 kilometers per second.

46.34 pc
151.07 ly
6 km/s
-0.304 arcsec/year
-0.084 arcsec/year

Spectral properties of HR4790

HR4790 belongs to spectral class G3 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR4790 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR4790. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4790