σ Lupi (sigma Lupi)
σ Lupi is a giant star in the constellation of Lupus.
σ Lupi visual magnitude is 4.42. Because of its moderate brightness, σ Lupi should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.
The table below summarizes the key facts about σ Lupi:
Celestial coordinates and finder chart of σ Lupi
σ Lupi 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 σ Lupi are provided in the following table:
The simplified sky map below shows the position of σ Lupi in the sky:
Visibility of σ Lupi from your location
Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
σ Lupi (sigma Lupi) is currently not visible from Greenwich, United Kingdom
Digitized Sky Survey image of σ Lupi
The image below is a photograph of σ Lupi 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 σ Lupi is -0.043 arcsec per year in Right Ascension and -0.01 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of σ Lupi from the Sun and relative movement
σ Lupi is distant 573.94 light years from the Sun and it is moving towards the Sun at the speed of 2 kilometers per second.
Spectral properties of σ Lupi
σ Lupi belongs to spectral class B2 and has a luminosity class of III corresponding to a giant star.
The red dot in the diagram below shows where σ Lupi is situated in the Hertzsprung–Russell diagram.