55 Cassiopeiae

Altitude: 28.5° Azimuth: 6.6° Direction: North

55 Cassiopeiae is a variable hypergiant star in the constellation of Cassiopeia.

55 Cassiopeiae visual magnitude is 6.07. Because of its reltive faintness, 55 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 55 Cassiopeiae:

Color of 55 Cassiopeiae ⬤

Magnitude of 55 Cassiopeiae 6.07

Class Hypergiant

VISIBILITY RIGHT NOW

55 Cassiopeiae is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 28.5°
Azimuth: 6.6°
Direction: North

Celestial coordinates and finder chart of 55 Cassiopeiae

55 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 55 Cassiopeiae are provided in the following table:

Right Ascension J2000 02h 14m 29s

Declination J2000 +66° 31’ 27”

Galactic Longitude 131.08°

Galactic Latitude 4.98°

Constellation Cassiopeia

The simplified sky map below shows the position of 55 Cassiopeiae in the sky:

Simplified finder chart for 55 Cassiopeiae.

Visibility of 55 Cassiopeiae from your location

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

55 Cassiopeiae is circumpolar and transits at 01:44 UTC (altitude: 75.0°)

Digitized Sky Survey image of 55 Cassiopeiae

The image below is a photograph of 55 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 55 Cassiopeiae is -0.006 arcsec per year in Right Ascension and -0.006 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of 55 Cassiopeiae. The red arrow shows the motion of 55 Cassiopeiae during the next 100000 years (-10.00 arcmin in Right Ascension and -10.00 arcmin in declination);

Distance of 55 Cassiopeiae from the Sun and relative movement

55 Cassiopeiae is distant 737.56 light years from the Sun and it is moving towards the Sun at the speed of 12 kilometers per second.

Distance (parsec) 226.24 pc

Distance (light year) 737.56 ly

Heliocentric radial velocity -12 km/s

Proper Motion RA -0.006 arcsec/year

Proper Motion Dec -0.006 arcsec/year

Spectral properties of 55 Cassiopeiae

55 Cassiopeiae belongs to spectral class G0 and has a luminosity class of II corresponding to a hypergiant star.

Absolute magnitude -0.70

Spectral Type G0II

Color Index (B-V) 0.63

Temperature of 55 Cassiopeiae 5853K

The red dot in the diagram below shows where 55 Cassiopeiae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 55 Cassiopeiae. Attribution: Richard Powell / CC BY-SA

Alternative designations of 55 Cassiopeiae

Flamsteed designation 55 Cassiopeiae

Henry Draper Catalogue HD13474

SAO Catalogue SAO12180

Hipparcos Catalogue HIP10438

Durchmusterung Catalogue BD+65 239

FK5 Catalogue 76

General Catalogue of Variable Stars 753

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In Evidence

Other stars in Cassiopeia