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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:04  
clear_day Transit: 12:06  
SunsetSet: 18:09
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All Constellations » Ursa Major » 

HR4275

Altitude: 24.4°   Azimuth: 324.9°   Direction: North-West

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 skies, while it is not visible at all from skies affected by light pollution.

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.

Image of HR4275 star
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);

Key facts about HR4275

6.17
Hypergiant

HR4275 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 24.4°
Azimuth: 324.9°
Direction: North-West

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:

10h 59m 17s
+51° 52’ 55”
155.64°
57.53°
Ursa Major

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

Finder chart HR4275 star
Simplified finder chart for HR4275.

Visibility of HR4275 from your location

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

HR4275 is circumpolar and transits at 23:07 UTC (altitude: 89.6°)

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.

208.77 pc
680.58 ly
-7 km/s
-0.012 arcsec/year
-0.003 arcsec/year

Spectral properties of HR4275

HR4275 belongs to spectral class K0

-0.43
K0
3983K

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

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

Alternative designations of HR4275

SAO27858
SAO27858