Your guide to the Solar System and the night sky
Latest Perseverance Images received 1 hours 37 mins ago for Sol77, Sol76, Sol75, Sol74
🌎  Greenwich, United Kingdom [change]


HR7722 is a variable hypergiant star in the constellation of Capricornus.

HR7722 visual magnitude is 5.73. Because of its reltive faintness, HR7722 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 HR7722:

HR7722 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR7722

HR7722 is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR7722 are provided in the following table:

20h 15m 17s
-27° 01’ 58”

The simplified sky map below shows the position of HR7722 in the sky:

Finder chart HR7722 star
Simplified finder chart for HR7722.

Visibility of HR7722 from your location

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

Today's HR7722 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 117.0°
Max altitude: 11.5°
Azimuth: 243.0°
HR7722 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR7722

The image below is a photograph of HR7722 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 HR7722 is 1.244 arcsec per year in Right Ascension and -0.174 arcsec per year in Declination and the associated displacement for the next 100 years is represented with the red arrow.

Image of HR7722 star
DSS2 image of HR7722. The red arrow shows the motion of HR7722 during the next 100 years (2.07 arcmin in Right Ascension and -0.29 arcmin in declination);

Distance of HR7722 from the Sun and relative movement

HR7722 is distant 28.77 light years from the Sun and it is moving towards the Sun at the speed of 54 kilometers per second.

8.82 pc
28.77 ly
-54 km/s
1.244 arcsec/year
-0.174 arcsec/year

Spectral properties of HR7722

HR7722 belongs to spectral class K0 and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where HR7722 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7722. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7722