HR645 is a variable and double giant star in the constellation of Andromeda.
HR645 visual magnitude is 5.31. Because of its reltive faintness, HR645 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 HR645:
Celestial coordinates and finder chart of HR645
HR645 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 HR645 are provided in the following table:
The simplified sky map below shows the position of HR645 in the sky:
Visibility of HR645 from your location
Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
HR645 is circumpolar and transits at 14:02 UTC (altitude: 89.6°)
Digitized Sky Survey image of HR645
The image below is a photograph of HR645 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 HR645 is 0.346 arcsec per year in Right Ascension and -0.171 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.
Distance of HR645 from the Sun and relative movement
HR645 is distant 198.90 light years from the Sun and it is moving far from the Sun at the speed of 27 kilometers per second.
Spectral properties of HR645
HR645 belongs to spectral class G8 and has a luminosity class of III corresponding to a giant star.
The red dot in the diagram below shows where HR645 is situated in the Hertzsprung–Russell diagram.
HR645 star system properties
HR645 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR645 double sysyem: