HR4575

HR4575 is a hypergiant star in the constellation of Ursa Major.

HR4575 visual magnitude is 6.76. Because of its reltive faintness, HR4575 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 HR4575:

Color of HR4575 ⬤

Magnitude of HR4575 6.76

Class Hypergiant

VISIBILITY RIGHT NOW HR4575 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 49°.

Celestial coordinates and finder chart of HR4575

HR4575 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 HR4575 are provided in the following table:

Right Ascension J2000 11h 58m 20s

Declination J2000 +61° 27’ 52”

Galactic Longitude 133.83°

Galactic Latitude 54.53°

Constellation Ursa Major

The simplified sky map below shows the position of HR4575 in the sky:

Simplified finder chart for HR4575.

Visibility of HR4575 from your location

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

HR4575 is circumpolar and transits at 23:49 UTC (altitude: 80.0°)

Digitized Sky Survey image of HR4575

The image below is a photograph of HR4575 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 HR4575 is 0.042 arcsec per year in Right Ascension and 0 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR4575. The red arrow shows the motion of HR4575 during the next 10000 years (7.00 arcmin in Right Ascension and 0.00 arcmin in declination);

Distance of HR4575 from the Sun and relative movement

HR4575 is distant 486.57 light years from the Sun and it is moving towards the Sun at the speed of 26 kilometers per second.

Distance (parsec) 149.25 pc

Distance (light year) 486.57 ly

Heliocentric radial velocity -26 km/s

Proper Motion RA 0.042 arcsec/year

Spectral properties of HR4575

HR4575 belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.

Absolute magnitude 0.89

Spectral Type K0III

Color Index (B-V)

Temperature of HR4575 10125K

The red dot in the diagram below shows where HR4575 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4575. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4575

Henry Draper Catalogue HD103953

SAO Catalogue SAO15673

Hipparcos Catalogue HIP58389

Durchmusterung Catalogue BD+62 1206

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In Evidence

Other stars in Ursa Major