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

ε Lupi (epsilon Lupi)

ε Lupi is a variable and multiple sub-giant star in the constellation of Lupus.

ε Lupi visual magnitude is 3.37. Because of its moderate brightness, ε 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 ε Lupi:

3.37
Sub-giant
ε Lupi (epsilon Lupi) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of ε Lupi

ε 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 ε Lupi are provided in the following table:

15h 22m 40s
-44° 41’ 21”
329.23°
10.32°
Lupus

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

Finder chart ε Lupi (epsilon Lupi) star
Simplified finder chart for ε Lupi (epsilon Lupi).

Visibility of ε Lupi from your location

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

ε Lupi (epsilon Lupi) is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of ε Lupi

The image below is a photograph of ε 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 ε Lupi is -0.019 arcsec per year in Right Ascension and -0.013 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of ε Lupi (epsilon Lupi) star
DSS2 image of ε Lupi. The red arrow shows the motion of ε Lupi during the next 10000 years (-3.17 arcmin in Right Ascension and -2.17 arcmin in declination);

Distance of ε Lupi from the Sun and relative movement

ε Lupi is distant 503.86 light years from the Sun and it is moving far from the Sun at the speed of 8 kilometers per second.

154.56 pc
503.86 ly
8 km/s
-0.019 arcsec/year
-0.013 arcsec/year

Spectral properties of ε Lupi

ε Lupi belongs to spectral class B2 and has a luminosity class of IV corresponding to a sub-giant star.

-2.58
B2IV
13121K

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

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

ε Lupi star system properties

ε Lupi is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the ε Lupi double sysyem:

3.37
4.87
1.5
0.4 arcsec

Alternative designations of ε Lupi

ε Lupi
(epsilon Lupi)
SAO225712
SAO225712