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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: 7:40  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
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All Constellations » Cepheus » 

ρ1 Cephei (rho1 Cephei)

Altitude: 51.5°   Azimuth: 341.9°   Direction: North-North-West

ρ1 Cephei is a main-sequence star in the constellation of Cepheus.

ρ1 Cephei visual magnitude is 5.83. Because of its reltive faintness, ρ1 Cephei 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 ρ1 Cephei:


ρ1 Cephei (rho1 Cephei) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 51.5°
Azimuth: 341.9°
Direction: North-North-West

Celestial coordinates and finder chart of ρ1 Cephei

ρ1 Cephei 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 ρ1 Cephei are provided in the following table:

22h 26m 42s
+78° 47’ 08”

The simplified sky map below shows the position of ρ1 Cephei in the sky:

Finder chart ρ1 Cephei (rho1 Cephei) star
Simplified finder chart for ρ1 Cephei (rho1 Cephei).

Visibility of ρ1 Cephei from your location

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

ρ1 Cephei (rho1 Cephei) is circumpolar and transits at 17:49 UTC (altitude: 62.7°)

Digitized Sky Survey image of ρ1 Cephei

The image below is a photograph of ρ1 Cephei 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 ρ1 Cephei is -0.016 arcsec per year in Right Ascension and -0.043 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of ρ1 Cephei (rho1 Cephei) star
DSS2 image of ρ1 Cephei. The red arrow shows the motion of ρ1 Cephei during the next 10000 years (-2.67 arcmin in Right Ascension and -7.17 arcmin in declination);

Distance of ρ1 Cephei from the Sun and relative movement

ρ1 Cephei is distant 204.01 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

62.58 pc
204.01 ly
-6 km/s
-0.016 arcsec/year
-0.043 arcsec/year

Spectral properties of ρ1 Cephei

ρ1 Cephei belongs to spectral class A2 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where ρ1 Cephei is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of ρ1 Cephei. Attribution: Richard Powell / CC BY-SA

Alternative designations of ρ1 Cephei

ρ1 Cephei
(rho1 Cephei)