31 Cassiopeiae

31 Cassiopeiae is a hypergiant star in the constellation of Cassiopeia.

31 Cassiopeiae visual magnitude is 5.29. Because of its reltive faintness, 31 Cassiopeiae 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 Cassiopeiae:

Color of 31 Cassiopeiae ⬤

Magnitude of 31 Cassiopeiae 5.29

Class Hypergiant

VISIBILITY RIGHT NOW 31 Cassiopeiae is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 44°.

Celestial coordinates and finder chart of 31 Cassiopeiae

31 Cassiopeiae 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 Cassiopeiae are provided in the following table:

Right Ascension J2000 01h 10m 39s

Declination J2000 +68° 46’ 42”

Galactic Longitude 124.68°

Galactic Latitude 5.97°

Constellation Cassiopeia

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

Simplified finder chart for 31 Cassiopeiae.

Visibility of 31 Cassiopeiae from your location

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

31 Cassiopeiae is circumpolar and transits at 08:40 UTC (altitude: 72.7°)

Digitized Sky Survey image of 31 Cassiopeiae

The image below is a photograph of 31 Cassiopeiae 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 Cassiopeiae is 0.036 arcsec per year in Right Ascension and -0.031 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 31 Cassiopeiae. The red arrow shows the motion of 31 Cassiopeiae during the next 10000 years (6.00 arcmin in Right Ascension and -5.17 arcmin in declination);

Distance of 31 Cassiopeiae from the Sun and relative movement

31 Cassiopeiae is distant 317.74 light years from the Sun and it is moving far from the Sun at the speed of 1 kilometers per second.

Distance (parsec) 97.47 pc

Distance (light year) 317.74 ly

Heliocentric radial velocity 1 km/s

Proper Motion RA 0.036 arcsec/year

Proper Motion Dec -0.031 arcsec/year

Spectral properties of 31 Cassiopeiae

31 Cassiopeiae belongs to spectral class A0 and has a luminosity class of V corresponding to a hypergiant star.

Absolute magnitude 0.35

Spectral Type A0V

Color Index (B-V) -0.02

Temperature of 31 Cassiopeiae 10382K

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

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

Alternative designations of 31 Cassiopeiae

Flamsteed designation 31 Cassiopeiae

Henry Draper Catalogue HD6829

SAO Catalogue SAO11612

Hipparcos Catalogue HIP5518

Durchmusterung Catalogue BD+68 77

FK5 Catalogue 2074

In Evidence

Other stars in Cassiopeia