Your guide to the Solar System and the night sky
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🌎  Greenwich, United Kingdom [change]

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:

4.42
Giant
σ Lupi (sigma Lupi) is below the horizon from Greenwich, United Kingdom [change].

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 emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of σ Lupi are provided in the following table:

14h 32m 36s
-50° 27’ 24”
318.93°
9.25°
Lupus

The simplified sky map below shows the position of σ Lupi in the sky:

Finder chart σ Lupi (sigma Lupi) star
Simplified finder chart for σ Lupi (sigma Lupi).

Visibility of σ Lupi from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

σ Lupi (sigma Lupi) is currently not visible from Greenwich, United Kingdom [change]

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.

Image of σ Lupi (sigma Lupi) star
DSS2 image of σ Lupi. The red arrow shows the motion of σ Lupi during the next 10000 years (-7.17 arcmin in Right Ascension and -1.67 arcmin in declination);

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.

176.06 pc
573.94 ly
-2 km/s
-0.043 arcsec/year
-0.01 arcsec/year

Spectral properties of σ Lupi

σ Lupi belongs to spectral class B2 and has a luminosity class of III corresponding to a giant star.

-1.81
B2III
13348K

The red dot in the diagram below shows where σ Lupi is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of σ Lupi. Attribution: Richard Powell / CC BY-SA

Alternative designations of σ Lupi

σ Lupi
(sigma Lupi)
SAO241781
SAO241781