Your guide to the Solar System and the night sky
By donating now you help keep this site alive and free from ads. Please consider supporting this project.
🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 6:45  ☀️ Transit: 13:03  🌅 Sunset: 19:23


HR8133 is a double sub-giant star in the constellation of Cepheus.

HR8133 visual magnitude is 6.39. Because of its reltive faintness, HR8133 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 HR8133:

HR8133 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 32°.

Celestial coordinates and finder chart of HR8133

HR8133 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 HR8133 are provided in the following table:

21h 13m 42s
+64° 24’ 14”

The simplified sky map below shows the position of HR8133 in the sky:

Finder chart HR8133 star
Simplified finder chart for HR8133.

Visibility of HR8133 from your location

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

HR8133 is circumpolar and transits at 08:51 UTC (altitude: 77.1°)

Digitized Sky Survey image of HR8133

The image below is a photograph of HR8133 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 HR8133 is 0.027 arcsec per year in Right Ascension and -0.105 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR8133 star
DSS2 image of HR8133. The red arrow shows the motion of HR8133 during the next 1000 years (0.45 arcmin in Right Ascension and -1.75 arcmin in declination);

Distance of HR8133 from the Sun and relative movement

HR8133 is distant 134.93 light years from the Sun and it is moving far from the Sun at the speed of 30 kilometers per second.

41.39 pc
134.93 ly
30 km/s
0.027 arcsec/year
-0.105 arcsec/year

Spectral properties of HR8133

HR8133 belongs to spectral class G2 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR8133 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8133. Attribution: Richard Powell / CC BY-SA

HR8133 star system properties

HR8133 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR8133 double sysyem:

0.6 arcsec

Alternative designations of HR8133