HR90 is a variable and double giant star in the constellation of Andromeda.
HR90 visual magnitude is 7.39. Because of its reltive faintness, HR90 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 HR90:
Celestial coordinates and finder chart of HR90
HR90 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 HR90 are provided in the following table:
The simplified sky map below shows the position of HR90 in the sky:
Visibility of HR90 from your location
HR90 is circumpolar and transits at 19:30 UTC (altitude: 77.1°)
Digitized Sky Survey image of HR90
The image below is a photograph of HR90 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 HR90 is -0.007 arcsec per year in Right Ascension and -0.023 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Spectral properties of HR90
HR90 belongs to spectral class S6 and has a luminosity class of III corresponding to a giant star.
HR90 star system properties
HR90 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 HR90 double sysyem: