HR815

Altitude: 33.5° Azimuth: 347.0° Direction: North-North-West

HR815 is a variable main-sequence star in the constellation of Cassiopeia.

HR815 visual magnitude is 6.18. Because of its reltive faintness, HR815 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 HR815:

Color of HR815 ⬤

Magnitude of HR815 6.18

Class Main-sequence

VISIBILITY RIGHT NOW

HR815 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 33.5°
Azimuth: 347.0°
Direction: North-North-West

Celestial coordinates and finder chart of HR815

HR815 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 HR815 are provided in the following table:

Right Ascension J2000 02h 48m 55s

Declination J2000 +69° 38’ 03”

Galactic Longitude 132.89°

Galactic Latitude 9.07°

Constellation Cassiopeia

The simplified sky map below shows the position of HR815 in the sky:

Simplified finder chart for HR815.

Visibility of HR815 from your location

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

HR815 is circumpolar and transits at 22:14 UTC (altitude: 71.8°)

Digitized Sky Survey image of HR815

The image below is a photograph of HR815 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 HR815 is 0 arcsec per year in Right Ascension and 0.032 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR815. The red arrow shows the motion of HR815 during the next 10000 years (0.00 arcmin in Right Ascension and 5.33 arcmin in declination);

Distance of HR815 from the Sun and relative movement

HR815 is distant 203.88 light years from the Sun and it is moving towards the Sun at the speed of 39 kilometers per second.

Distance (parsec) 62.54 pc

Distance (light year) 203.88 ly

Heliocentric radial velocity -39 km/s

Proper Motion Dec 0.032 arcsec/year

Spectral properties of HR815

HR815 belongs to spectral class A3 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude 2.20

Spectral Type A3V

Color Index (B-V) 0.18

Temperature of HR815 8321K

The red dot in the diagram below shows where HR815 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR815. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR815

Henry Draper Catalogue HD17138

SAO Catalogue SAO12445

Hipparcos Catalogue HIP13133

Durchmusterung Catalogue BD+69 179

General Catalogue of Variable Stars RZ Cas

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In Evidence

Other stars in Cassiopeia