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:

Color of ρ2 Cephei ⬤

Magnitude of ρ2 Cephei 5.5

Class Main-sequence

VISIBILITY RIGHT NOW ρ2 Cephei (rho2 Cephei) is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 44°.

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:

Right Ascension J2000 22h 29m 52s

Declination J2000 +78° 49’ 27”

Galactic Longitude 116.16°

Galactic Latitude 17.86°

Constellation Cepheus

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 edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

ρ2 Cephei (rho2 Cephei) is circumpolar and transits at 05:44 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.

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.

Distance (parsec) 72.73 pc

Distance (light year) 237.09 ly

Heliocentric radial velocity 1 km/s

Proper Motion RA 0.001 arcsec/year

Proper Motion Dec -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.

Absolute magnitude 1.19

Spectral Type A3V

Color Index (B-V) 0.06

Temperature of ρ2 Cephei 9434K

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

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

Alternative designations of ρ2 Cephei

Bayer designation ρ2 Cephei
(rho2 Cephei)

Flamsteed designation 29 Cephei

Henry Draper Catalogue HD213798

SAO Catalogue SAO10402

Hipparcos Catalogue HIP111056

Durchmusterung Catalogue BD+78 801

FK5 Catalogue 1593

In Evidence

Other stars in Cepheus