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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:35  
clear_day Transit: 12:10  
SunsetSet: 17:45
wb_twilight Astronomical TwilightWhat's Visible Now?
All Constellations » Cepheus » 


Altitude: 46.2°   Azimuth: 39.8°   Direction: North-East

HR8383 is a variable and double supergiant star in the constellation of Cepheus.

HR8383 visual magnitude is 4.91. Because of its moderate brightness, HR8383 should be easily visible from locations with dark skies, while it can be barely visible, or not visible at all, from skies affected by light pollution.

The proper motion of HR8383 is -0.005 arcsec per year in Right Ascension and -0.004 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of HR8383 star
DSS2 image of HR8383. The red arrow shows the motion of HR8383 during the next 100000 years (-8.33 arcmin in Right Ascension and -6.67 arcmin in declination);

Key facts about HR8383


HR8383 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 46.2°
Azimuth: 39.8°
Direction: North-East

Celestial coordinates and finder chart of HR8383

HR8383 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 HR8383 are provided in the following table:

21h 56m 39s
+63° 37’ 32”

The simplified sky map below shows the position of HR8383 in the sky:

Finder chart HR8383 star
Simplified finder chart for HR8383.

Visibility of HR8383 from your location

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

HR8383 is circumpolar and transits at 11:01 UTC (altitude: 77.9°)

Distance of HR8383 from the Sun and relative movement

HR8383 is distant 8,358.97 light years from the Sun and it is moving towards the Sun at the speed of 19 kilometers per second.

2,564.10 pc
8,358.97 ly
-19 km/s
-0.005 arcsec/year
-0.004 arcsec/year

Spectral properties of HR8383

HR8383 belongs to spectral class M2 and has a luminosity class of I corresponding to a supergiant star.


The red dot in the diagram below shows where HR8383 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR8383. Attribution: Richard Powell / CC BY-SA

HR8383 star system properties

HR8383 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR8383 double sysyem:

0.1 arcsec

Alternative designations of HR8383