HR4481 is a double sub-giant star in the constellation of Ursa Major.
HR4481 visual magnitude is 6.46. Because of its reltive faintness, HR4481 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 HR4481:
Celestial coordinates and finder chart of HR4481
HR4481 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 HR4481 are provided in the following table:
The simplified sky map below shows the position of HR4481 in the sky:
Visibility of HR4481 from your location
Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
HR4481 is circumpolar and transits at 23:30 UTC (altitude: 77.1°)
Digitized Sky Survey image of HR4481
The image below is a photograph of HR4481 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 HR4481 is 0.016 arcsec per year in Right Ascension and 0.006 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of HR4481 from the Sun and relative movement
HR4481 is distant 640.47 light years from the Sun and it is moving towards the Sun at the speed of 22 kilometers per second.
Spectral properties of HR4481
HR4481 belongs to spectral class A5 and has a luminosity class of IV corresponding to a sub-giant star.
The red dot in the diagram below shows where HR4481 is situated in the Hertzsprung–Russell diagram.
HR4481 star system properties
HR4481 is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the HR4481 double sysyem: