Your guide to the Solar System and the night sky
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🌎  Observing from: Greenwich, United Kingdom [change]

ρ2 Cephei (rho2 Cephei)

ρ2 Cephei is a main-sequence star in the constellation of Cepheus.

ρ2 Cephei visual magnitude is 5.5. Because of its reltive faintness, ρ2 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 ρ2 Cephei:

ρ2 Cephei (rho2 Cephei) is above the horizon from Greenwich, United Kingdom [change]. Altitude: 49°.

Celestial coordinates and finder chart of ρ2 Cephei

ρ2 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 ρ2 Cephei are provided in the following table:

22h 29m 52s
+78° 49’ 27”

The simplified sky map below shows the position of ρ2 Cephei in the sky:

Finder chart ρ2 Cephei (rho2 Cephei) star
Simplified finder chart for ρ2 Cephei (rho2 Cephei).

Visibility of ρ2 Cephei from your location

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

ρ2 Cephei (rho2 Cephei) is circumpolar and transits at 13:16 UTC (altitude: 62.7°)

Digitized Sky Survey image of ρ2 Cephei

The image below is a photograph of ρ2 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 ρ2 Cephei is 0.001 arcsec per year in Right Ascension and -0.022 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of ρ2 Cephei (rho2 Cephei) star
DSS2 image of ρ2 Cephei. The red arrow shows the motion of ρ2 Cephei during the next 10000 years (0.17 arcmin in Right Ascension and -3.67 arcmin in declination);

Distance of ρ2 Cephei from the Sun and relative movement

ρ2 Cephei is distant 237.09 light years from the Sun and it is moving far from the Sun at the speed of 1 kilometers per second.

72.73 pc
237.09 ly
1 km/s
0.001 arcsec/year
-0.022 arcsec/year

Spectral properties of ρ2 Cephei

ρ2 Cephei belongs to spectral class A3 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where ρ2 Cephei is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of ρ2 Cephei. Attribution: Richard Powell / CC BY-SA

Alternative designations of ρ2 Cephei

ρ2 Cephei
(rho2 Cephei)