HR1781 is a main-sequence star in the constellation of Orion.
HR1781 visual magnitude is 5.7. Because of its reltive faintness, HR1781 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 HR1781:
Celestial coordinates and finder chart of HR1781
HR1781 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 HR1781 are provided in the following table:
The simplified sky map below shows the position of HR1781 in the sky:
Visibility of HR1781 from your location
Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Today's HR1781 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 HR1781
The image below is a photograph of HR1781 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 HR1781 is -0.009 arcsec per year in Right Ascension and 0.003 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.
Distance of HR1781 from the Sun and relative movement
HR1781 is distant 808.93 light years from the Sun and it is moving far from the Sun at the speed of 22 kilometers per second.
Spectral properties of HR1781
HR1781 belongs to spectral class B1 and has a luminosity class of V corresponding to a main-sequence star.
The red dot in the diagram below shows where HR1781 is situated in the Hertzsprung–Russell diagram.