HR81 is a double hypergiant star in the constellation of Pisces.
HR81 visual magnitude is 6.56. Because of its reltive faintness, HR81 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 HR81:
Celestial coordinates and finder chart of HR81
HR81 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR81 are provided in the following table:
The simplified sky map below shows the position of HR81 in the sky:
Visibility of HR81 from your location
Today's HR81 rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):
Digitized Sky Survey image of HR81
The image below is a photograph of HR81 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 HR81 is -0.046 arcsec per year in Right Ascension and -0.028 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of HR81 from the Sun and relative movement
HR81 is distant 624.52 light years from the Sun and it is moving towards the Sun at the speed of 18 kilometers per second.
Spectral properties of HR81
HR81 belongs to spectral class A0 and has a luminosity class of V corresponding to a hypergiant star.
The red dot in the diagram below shows where HR81 is situated in the Hertzsprung–Russell diagram.
HR81 star system properties
HR81 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR81 double sysyem: