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🌎  Greenwich, United Kingdom [change]

HR722

HR722 is a variable giant star in the constellation of Horologium.

HR722 visual magnitude is 6.41. Because of its reltive faintness, HR722 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 HR722:

6.41
Giant
HR722 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR722

HR722 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 HR722 are provided in the following table:

02h 25m 26s
-66° 29’ 40”
289.17°
-48.04°
Horologium

The simplified sky map below shows the position of HR722 in the sky:

Finder chart HR722 star
Simplified finder chart for HR722.

Visibility of HR722 from your location

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

HR722 is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of HR722

The image below is a photograph of HR722 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 HR722 is -0.029 arcsec per year in Right Ascension and -0.019 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR722 star
DSS2 image of HR722. The red arrow shows the motion of HR722 during the next 10000 years (-4.83 arcmin in Right Ascension and -3.17 arcmin in declination);

Distance of HR722 from the Sun and relative movement

HR722 is distant 920.90 light years from the Sun and it is moving far from the Sun at the speed of 2 kilometers per second.

282.49 pc
920.90 ly
2 km/s
-0.029 arcsec/year
-0.019 arcsec/year

Spectral properties of HR722

HR722 belongs to spectral class M5 and has a luminosity class of III corresponding to a giant star.

-0.84
M5III
3734K

The red dot in the diagram below shows where HR722 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR722. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR722

SAO248556
SAO248556