HR4275

HR4275 is a variable hypergiant star in the constellation of Ursa Major.

HR4275 visual magnitude is 6.17. Because of its reltive faintness, HR4275 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 HR4275:

Color of HR4275 ⬤

Magnitude of HR4275 6.17

Class Hypergiant

VISIBILITY RIGHT NOW HR4275 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 17°.

Celestial coordinates and finder chart of HR4275

HR4275 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 HR4275 are provided in the following table:

Right Ascension J2000 10h 59m 17s

Declination J2000 +51° 52’ 55”

Galactic Longitude 155.64°

Galactic Latitude 57.53°

Constellation Ursa Major

The simplified sky map below shows the position of HR4275 in the sky:

Simplified finder chart for HR4275.

Visibility of HR4275 from your location

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

HR4275 is circumpolar and transits at 22:58 UTC (altitude: 89.6°)

Digitized Sky Survey image of HR4275

The image below is a photograph of HR4275 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 HR4275 is -0.012 arcsec per year in Right Ascension and -0.003 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR4275. The red arrow shows the motion of HR4275 during the next 10000 years (-2.00 arcmin in Right Ascension and -0.50 arcmin in declination);

Distance of HR4275 from the Sun and relative movement

HR4275 is distant 680.58 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.

Distance (parsec) 208.77 pc

Distance (light year) 680.58 ly

Heliocentric radial velocity -7 km/s

Proper Motion RA -0.012 arcsec/year

Proper Motion Dec -0.003 arcsec/year

Spectral properties of HR4275

HR4275 belongs to spectral class K0

Absolute magnitude -0.43

Spectral Type K0

Color Index (B-V) 1.38

Temperature of HR4275 3983K

The red dot in the diagram below shows where HR4275 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4275. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4275

Henry Draper Catalogue HD95057

SAO Catalogue SAO27858

Hipparcos Catalogue HIP53706

Durchmusterung Catalogue BD+52 1528

FK5 Catalogue 2876

General Catalogue of Variable Stars 5038

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In Evidence

Other stars in Ursa Major