HR3157 is a variable and double sub-giant star in the constellation of Carina.
HR3157 visual magnitude is 6.1. Because of its reltive faintness, HR3157 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 HR3157:
Celestial coordinates and finder chart of HR3157
HR3157 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 HR3157 are provided in the following table:
The simplified sky map below shows the position of HR3157 in the sky:
Visibility of HR3157 from your location
Digitized Sky Survey image of HR3157
The image below is a photograph of HR3157 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 HR3157 is -0.018 arcsec per year in Right Ascension and 0.021 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of HR3157 from the Sun and relative movement
HR3157 is distant 1,319.84 light years from the Sun and it is moving far from the Sun at the speed of 34 kilometers per second.
Spectral properties of HR3157
HR3157 belongs to spectral class B2 and has a luminosity class of IV corresponding to a sub-giant star.
The red dot in the diagram below shows where HR3157 is situated in the Hertzsprung–Russell diagram.
HR3157 star system properties
HR3157 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR3157 double sysyem: