31 Cephei

Altitude: 35.2° Azimuth: 358.6° Direction: North

31 Cephei is a giant star in the constellation of Cepheus.

31 Cephei visual magnitude is 5.08. Because of its reltive faintness, 31 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 31 Cephei:

Color of 31 Cephei ⬤

Magnitude of 31 Cephei 5.08

Class Giant

VISIBILITY RIGHT NOW

31 Cephei is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 35.2°
Azimuth: 358.6°
Direction: North

Celestial coordinates and finder chart of 31 Cephei

31 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 31 Cephei are provided in the following table:

Right Ascension J2000 22h 35m 46s

Declination J2000 +73° 38’ 35”

Galactic Longitude 113.64°

Galactic Latitude 13.27°

Constellation Cepheus

The simplified sky map below shows the position of 31 Cephei in the sky:

Simplified finder chart for 31 Cephei.

Visibility of 31 Cephei from your location

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

31 Cephei is circumpolar and transits at 22:21 UTC (altitude: 67.8°)

Digitized Sky Survey image of 31 Cephei

The image below is a photograph of 31 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 31 Cephei is 0.172 arcsec per year in Right Ascension and 0.023 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of 31 Cephei. The red arrow shows the motion of 31 Cephei during the next 1000 years (2.87 arcmin in Right Ascension and 0.38 arcmin in declination);

Distance of 31 Cephei from the Sun and relative movement

31 Cephei is distant 184.18 light years from the Sun

Distance (parsec) 56.50 pc

Distance (light year) 184.18 ly

Proper Motion RA 0.172 arcsec/year

Proper Motion Dec 0.023 arcsec/year

Spectral properties of 31 Cephei

31 Cephei belongs to spectral class F3 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 1.32

Spectral Type F3III

Color Index (B-V) 0.39

Temperature of 31 Cephei 6934K

The red dot in the diagram below shows where 31 Cephei is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 31 Cephei. Attribution: Richard Powell / CC BY-SA

Alternative designations of 31 Cephei

Flamsteed designation 31 Cephei

Henry Draper Catalogue HD214470

SAO Catalogue SAO10425

Hipparcos Catalogue HIP111532

Durchmusterung Catalogue BD+72 1049

FK5 Catalogue 851

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In Evidence

Other stars in Cepheus