HR256

Altitude: 84.3° Azimuth: 116.6° Direction: East-South-East

HR256 is a giant star in the constellation of Cassiopeia.

HR256 visual magnitude is 6.27. Because of its reltive faintness, HR256 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 HR256:

Color of HR256 ⬤

Magnitude of HR256 6.27

Class Giant

VISIBILITY RIGHT NOW

HR256 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 84.3°
Azimuth: 116.6°
Direction: East-South-East

Celestial coordinates and finder chart of HR256

HR256 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR256 are provided in the following table:

Right Ascension J2000 00h 55m 05s

Declination J2000 +48° 40’ 42”

Galactic Longitude 123.55°

Galactic Latitude -14.19°

Constellation Cassiopeia

The simplified sky map below shows the position of HR256 in the sky:

Simplified finder chart for HR256.

Visibility of HR256 from your location

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

HR256 is circumpolar and transits at 20:21 UTC (altitude: 87.2°)

Digitized Sky Survey image of HR256

The image below is a photograph of HR256 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 HR256 is -0.022 arcsec per year in Right Ascension and -0.006 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR256. The red arrow shows the motion of HR256 during the next 10000 years (-3.67 arcmin in Right Ascension and -1.00 arcmin in declination);

Distance of HR256 from the Sun and relative movement

HR256 is distant 802.96 light years from the Sun and it is moving towards the Sun at the speed of 52 kilometers per second.

Distance (parsec) 246.31 pc

Distance (light year) 802.96 ly

Heliocentric radial velocity -52 km/s

Proper Motion RA -0.022 arcsec/year

Proper Motion Dec -0.006 arcsec/year

Spectral properties of HR256

HR256 belongs to spectral class M2 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude -0.69

Spectral Type M2III

Color Index (B-V) 1.68

Temperature of HR256 3541K

The red dot in the diagram below shows where HR256 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR256. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR256

Henry Draper Catalogue HD5273

SAO Catalogue SAO36763

Hipparcos Catalogue HIP4298

Durchmusterung Catalogue BD+47 242

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In Evidence

Other stars in Cassiopeia