Your guide to the Solar System and the night sky
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🌎  Observing from: Greenwich, United Kingdom [change]

HR791

HR791 is a giant star in the constellation of Cassiopeia.

HR791 visual magnitude is 5.95. Because of its reltive faintness, HR791 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 HR791:

5.95
Giant
HR791 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 33°.

Celestial coordinates and finder chart of HR791

HR791 is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR791 are provided in the following table:

02h 44m 49s
+67° 49’ 28”
133.34°
7.27°
Cassiopeia

The simplified sky map below shows the position of HR791 in the sky:

Finder chart HR791 star
Simplified finder chart for HR791.

Visibility of HR791 from your location

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

HR791 is circumpolar and transits at 17:34 UTC (altitude: 73.7°)

Digitized Sky Survey image of HR791

The image below is a photograph of HR791 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 HR791 is 0.015 arcsec per year in Right Ascension and -0.033 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR791 star
DSS2 image of HR791. The red arrow shows the motion of HR791 during the next 10000 years (2.50 arcmin in Right Ascension and -5.50 arcmin in declination);

Distance of HR791 from the Sun and relative movement

HR791 is distant 406.48 light years from the Sun and it is moving far from the Sun at the speed of 5 kilometers per second.

124.69 pc
406.48 ly
5 km/s
0.015 arcsec/year
-0.033 arcsec/year

Spectral properties of HR791

HR791 belongs to spectral class A5 and has a luminosity class of III corresponding to a giant star.

0.47
A5III
9028K

The red dot in the diagram below shows where HR791 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR791. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR791

SAO12421
SAO12421