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


HR842 is a giant star in the constellation of Perseus.

HR842 visual magnitude is 5.88. Because of its reltive faintness, HR842 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 HR842:

HR842 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 11°.

Celestial coordinates and finder chart of HR842

HR842 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR842 are provided in the following table:

02h 51m 41s
+46° 50’ 30”

The simplified sky map below shows the position of HR842 in the sky:

Finder chart HR842 star
Simplified finder chart for HR842.

Visibility of HR842 from your location

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

HR842 is circumpolar and transits at 02:57 UTC (altitude: 85.4°)

Digitized Sky Survey image of HR842

The image below is a photograph of HR842 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 HR842 is -0.025 arcsec per year in Right Ascension and -0.028 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR842 star
DSS2 image of HR842. The red arrow shows the motion of HR842 during the next 10000 years (-4.17 arcmin in Right Ascension and -4.67 arcmin in declination);

Distance of HR842 from the Sun and relative movement

HR842 is distant 397.08 light years from the Sun and it is moving towards the Sun at the speed of 12 kilometers per second.

121.80 pc
397.08 ly
-12 km/s
-0.025 arcsec/year
-0.028 arcsec/year

Spectral properties of HR842

HR842 belongs to spectral class G8 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR842 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR842. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR842