HR5731

Altitude: 72.4° Azimuth: 317.0° Direction: North-West

HR5731 is a variable hypergiant star in the constellation of Draco.

HR5731 visual magnitude is 5.98. Because of its reltive faintness, HR5731 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 HR5731:

Color of HR5731 ⬤

Magnitude of HR5731 5.98

Class Hypergiant

VISIBILITY RIGHT NOW

HR5731 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 72.4°
Azimuth: 317.0°
Direction: North-West

Celestial coordinates and finder chart of HR5731

HR5731 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 HR5731 are provided in the following table:

Right Ascension J2000 15h 22m 37s

Declination J2000 +62° 02’ 49”

Galactic Longitude 97.98°

Galactic Latitude 47.09°

Constellation Draco

The simplified sky map below shows the position of HR5731 in the sky:

Simplified finder chart for HR5731.

Visibility of HR5731 from your location

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

HR5731 is circumpolar and transits at 10:26 UTC (altitude: 79.4°)

Digitized Sky Survey image of HR5731

The image below is a photograph of HR5731 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 HR5731 is 0.01 arcsec per year in Right Ascension and -0.034 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR5731. The red arrow shows the motion of HR5731 during the next 10000 years (1.67 arcmin in Right Ascension and -5.67 arcmin in declination);

Distance of HR5731 from the Sun and relative movement

HR5731 is distant 461.10 light years from the Sun and it is moving towards the Sun at the speed of 24 kilometers per second.

Distance (parsec) 141.44 pc

Distance (light year) 461.10 ly

Heliocentric radial velocity -24 km/s

Proper Motion RA 0.01 arcsec/year

Proper Motion Dec -0.034 arcsec/year

Spectral properties of HR5731

HR5731 belongs to spectral class A0 HR5731 is also a Si chemically peculiar star.

Absolute magnitude 0.23

Spectral Type A0

Color Index (B-V) -0.03

Temperature of HR5731 10516K

The red dot in the diagram below shows where HR5731 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR5731. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR5731

Henry Draper Catalogue HD137389

SAO Catalogue SAO16712

Hipparcos Catalogue HIP75256

Durchmusterung Catalogue BD+62 1410

General Catalogue of Variable Stars Var?

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In Evidence

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