HR3931 is a double main-sequence star in the constellation of Hydra.
HR3931 visual magnitude is 6.28. Because of its reltive faintness, HR3931 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 HR3931:
Celestial coordinates and finder chart of HR3931
HR3931 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR3931 are provided in the following table:
The simplified sky map below shows the position of HR3931 in the sky:
Visibility of HR3931 from your location
Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Today's HR3931 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 HR3931
The image below is a photograph of HR3931 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 HR3931 is -0.114 arcsec per year in Right Ascension and 0.006 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.
Distance of HR3931 from the Sun and relative movement
HR3931 is distant 226.55 light years from the Sun and it is moving far from the Sun at the speed of 11 kilometers per second.
Spectral properties of HR3931
HR3931 belongs to spectral class A4 and has a luminosity class of V corresponding to a main-sequence star.
The red dot in the diagram below shows where HR3931 is situated in the Hertzsprung–Russell diagram.
HR3931 star system properties
HR3931 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 HR3931 double sysyem: