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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
north SunriseRise: 7:41  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
sleep NighttimeWhat's Visible Now?
All Constellations » Cepheus » 


Altitude: 43.9°   Azimuth: 344.1°   Direction: North-North-West

HR55 is a double main-sequence star in the constellation of Cepheus.

HR55 visual magnitude is 6.35. Because of its reltive faintness, HR55 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 HR55:


HR55 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 43.9°
Azimuth: 344.1°
Direction: North-North-West

Celestial coordinates and finder chart of HR55

HR55 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 HR55 are provided in the following table:

00h 16m 14s
+76° 57’ 02”

The simplified sky map below shows the position of HR55 in the sky:

Finder chart HR55 star
Simplified finder chart for HR55.

Visibility of HR55 from your location

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

HR55 is circumpolar and transits at 19:34 UTC (altitude: 64.5°)

Digitized Sky Survey image of HR55

The image below is a photograph of HR55 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 HR55 is 0.018 arcsec per year in Right Ascension and -0.002 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR55 star
DSS2 image of HR55. The red arrow shows the motion of HR55 during the next 10000 years (3.00 arcmin in Right Ascension and -0.33 arcmin in declination);

Distance of HR55 from the Sun and relative movement

HR55 is distant 617.42 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.

189.39 pc
617.42 ly
-7 km/s
0.018 arcsec/year
-0.002 arcsec/year

Spectral properties of HR55

HR55 belongs to spectral class B8 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR55 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR55. Attribution: Richard Powell / CC BY-SA

HR55 star system properties

HR55 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR55 double sysyem:

0.8 arcsec

Alternative designations of HR55