HR237

Altitude: 42.8° Azimuth: 320.0° Direction: North-West

HR237 is a variable supergiant star in the constellation of Cassiopeia.

HR237 visual magnitude is 6.07. Because of its reltive faintness, HR237 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 HR237:

Color of HR237 ⬤

Magnitude of HR237 6.07

Class Supergiant

VISIBILITY RIGHT NOW

HR237 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 42.8°
Azimuth: 320.0°
Direction: North-West

Celestial coordinates and finder chart of HR237

HR237 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 HR237 are provided in the following table:

Right Ascension J2000 00h 51m 16s

Declination J2000 +61° 48’ 20”

Galactic Longitude 122.91°

Galactic Latitude -1.07°

Constellation Cassiopeia

The simplified sky map below shows the position of HR237 in the sky:

Simplified finder chart for HR237.

Visibility of HR237 from your location

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

HR237 is circumpolar and transits at 00:05 UTC (altitude: 79.7°)

Digitized Sky Survey image of HR237

The image below is a photograph of HR237 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 HR237 is -0.002 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 HR237. The red arrow shows the motion of HR237 during the next 100000 years (-3.33 arcmin in Right Ascension and 10.00 arcmin in declination);

Distance of HR237 from the Sun and relative movement

HR237 is distant 2,488.55 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

Distance (parsec) 763.36 pc

Distance (light year) 2,488.55 ly

Heliocentric radial velocity -6 km/s

Proper Motion RA -0.002 arcsec/year

Proper Motion Dec 0.006 arcsec/year

Spectral properties of HR237

HR237 belongs to spectral class K2 and has a luminosity class of I corresponding to a supergiant star.

Absolute magnitude -3.34

Spectral Type K2I

Color Index (B-V) 1.88

Temperature of HR237 3299K

The red dot in the diagram below shows where HR237 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR237. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR237

Henry Draper Catalogue HD4817

SAO Catalogue SAO11430

Hipparcos Catalogue HIP3988

Durchmusterung Catalogue BD+61 178

General Catalogue of Variable Stars 319

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In Evidence

Other stars in Cassiopeia