Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 6:52  
clear_day Transit: 12:49  
SunsetSet: 18:46 south
sunny DaytimeWhat's Visible Now
All Constellations » Cetus » 


Altitude: -36.1°   Azimuth: 10.3°   Direction: North

HR719 is a double hypergiant star in the constellation of Cetus.

HR719 visual magnitude is 6.45. Because of its reltive faintness, HR719 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 HR719:


HR719 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -36.1°
Azimuth: 10.3°
Direction: North

Celestial coordinates and finder chart of HR719

HR719 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR719 are provided in the following table:

02h 28m 00s
+01° 57’ 38”

The simplified sky map below shows the position of HR719 in the sky:

Finder chart HR719 star
Simplified finder chart for HR719.

Visibility of HR719 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 HR719 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: 88.0°
Max altitude: 40.5°
Azimuth: 272.0°

Digitized Sky Survey image of HR719

The image below is a photograph of HR719 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 HR719 is -0.002 arcsec per year in Right Ascension and -0.012 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR719 star
DSS2 image of HR719. The red arrow shows the motion of HR719 during the next 10000 years (-0.33 arcmin in Right Ascension and -2.00 arcmin in declination);

Distance of HR719 from the Sun and relative movement

HR719 is distant 950.44 light years from the Sun and it is moving far from the Sun at the speed of 18 kilometers per second.

291.55 pc
950.44 ly
18 km/s
-0.002 arcsec/year
-0.012 arcsec/year

Spectral properties of HR719

HR719 belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where HR719 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR719. Attribution: Richard Powell / CC BY-SA

HR719 star system properties

HR719 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 HR719 double sysyem:

0.5 arcsec

Alternative designations of HR719