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: 4:52  
clear_day Transit: 12:55  
SunsetSet: 20:59 south
wb_twilight Astronomical TwilightWhat's Visible Now
All Constellations » Cassiopeia » 


HR342 is a variable main-sequence star in the constellation of Cassiopeia.

HR342 visual magnitude is 5.55. Because of its reltive faintness, HR342 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 HR342:

HR342 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 29°.

Celestial coordinates and finder chart of HR342

HR342 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 HR342 are provided in the following table:

01h 11m 25s
+64° 12’ 10”

The simplified sky map below shows the position of HR342 in the sky:

Finder chart HR342 star
Simplified finder chart for HR342.

Visibility of HR342 from your location

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

HR342 is circumpolar and transits at 08:48 UTC (altitude: 77.3°)

Digitized Sky Survey image of HR342

The image below is a photograph of HR342 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 HR342 is 0.04 arcsec per year in Right Ascension and -0.013 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR342 star
DSS2 image of HR342. The red arrow shows the motion of HR342 during the next 10000 years (6.67 arcmin in Right Ascension and -2.17 arcmin in declination);

Distance of HR342 from the Sun and relative movement

HR342 is distant 409.55 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.

125.63 pc
409.55 ly
-10 km/s
0.04 arcsec/year
-0.013 arcsec/year

Spectral properties of HR342

HR342 belongs to spectral class B9 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR342 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR342. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR342