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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: 7:43  
clear_day Transit: 11:47  
SunsetSet: 15:52 south
sleep NighttimeWhat's Visible Now?
All Constellations » Cepheus » 


Altitude: 20.3°   Azimuth: 11.3°   Direction: North-North-East

HR7955 is a double sub-giant star in the constellation of Cepheus.

HR7955 visual magnitude is 4.51. Because of its moderate brightness, HR7955 should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about HR7955:


HR7955 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 20.3°
Azimuth: 11.3°
Direction: North-North-East

Celestial coordinates and finder chart of HR7955

HR7955 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 HR7955 are provided in the following table:

20h 45m 21s
+57° 34’ 46”

The simplified sky map below shows the position of HR7955 in the sky:

Finder chart HR7955 star
Simplified finder chart for HR7955.

Visibility of HR7955 from your location

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

HR7955 is circumpolar and transits at 16:00 UTC (altitude: 83.9°)

Digitized Sky Survey image of HR7955

The image below is a photograph of HR7955 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 HR7955 is -0.064 arcsec per year in Right Ascension and -0.236 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR7955 star
DSS2 image of HR7955. The red arrow shows the motion of HR7955 during the next 1000 years (-1.07 arcmin in Right Ascension and -3.93 arcmin in declination);

Distance of HR7955 from the Sun and relative movement

HR7955 is distant 88.42 light years from the Sun and it is moving towards the Sun at the speed of 31 kilometers per second.

27.12 pc
88.42 ly
-31 km/s
-0.064 arcsec/year
-0.236 arcsec/year

Spectral properties of HR7955

HR7955 belongs to spectral class F8 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR7955 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR7955. Attribution: Richard Powell / CC BY-SA

HR7955 star system properties

HR7955 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR7955 double sysyem:

66.4 arcsec

Alternative designations of HR7955