HR831

Altitude: -0.4° Azimuth: 349.2° Direction: North

HR831 is a giant star in the constellation of Perseus.

HR831 visual magnitude is 6.45. Because of its reltive faintness, HR831 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 HR831:

Color of HR831 ⬤

Magnitude of HR831 6.45

Class Giant

VISIBILITY RIGHT NOW

HR831 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -0.4°
Azimuth: 349.2°
Direction: North

Celestial coordinates and finder chart of HR831

HR831 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 HR831 are provided in the following table:

Right Ascension J2000 02h 49m 27s

Declination J2000 +37° 19’ 33”

Galactic Longitude 147.54°

Galactic Latitude -19.84°

Constellation Perseus

The simplified sky map below shows the position of HR831 in the sky:

Simplified finder chart for HR831.

Visibility of HR831 from your location

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

Today's HR831 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 52.7° RISE 11:25

Max altitude: 75.8° TRANSIT 22:15

Azimuth: 307.3° SET 9:08

Digitized Sky Survey image of HR831

The image below is a photograph of HR831 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 HR831 is 0.009 arcsec per year in Right Ascension and -0.016 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR831. The red arrow shows the motion of HR831 during the next 10000 years (1.50 arcmin in Right Ascension and -2.67 arcmin in declination);

Distance of HR831 from the Sun and relative movement

HR831 is distant 379.07 light years from the Sun and it is moving far from the Sun at the speed of 12 kilometers per second.

Distance (parsec) 116.28 pc

Distance (light year) 379.07 ly

Heliocentric radial velocity 12 km/s

Proper Motion RA 0.009 arcsec/year

Proper Motion Dec -0.016 arcsec/year

Spectral properties of HR831

HR831 belongs to spectral class F6 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 1.12

Spectral Type F6III

Color Index (B-V) 0.43

Temperature of HR831 6724K

The red dot in the diagram below shows where HR831 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR831. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR831

Henry Draper Catalogue HD17484

SAO Catalogue SAO55910

Hipparcos Catalogue HIP13176

Durchmusterung Catalogue BD+36 566

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In Evidence

Other stars in Perseus