ε Lupi (epsilon Lupi)

Below the horizon. Rise: 16:57 | Tran: 20:54 | Set: 0:51

Alt: -72.02° Az: 172.29° Direction: South

ε Lupi is a variable and multiple sub-giant star of spectral class B2 in the constellation of Lupus.

ε Lupi visual magnitude is 3.37. Because of its moderate brightness, ε Lupi is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

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);

Celestial Coordinates

Apparent

Right Ascension 15h 24m 25s

Declination -44° 46’ 44”

Hour Angle 12h 13m 22s

Sidereal Time 03h 37m 48s

J2000

Right Ascension 15h 22m 40s

Declination -44° 41’ 21”

Galactic Coordinates

Galactic Longitude 329.23°

Galactic Latitude 10.32°

Finder Chart

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Finder chart for ε Lupi (epsilon Lupi).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 3.37

Class Sub-giant

Absolute magnitude -2.58

Spectral Type B2IV

Color Index (B-V) -0.18

Temperature 13121K

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

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

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:

Main star magnitude 3.37

Secondary star magnitude 4.87

Magnitude difference 1.5

Separation 0.4 arcsec

Distance, Radial Speed, Proper Motion

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.

Distance (parsec) 154.56

Distance (light year) 503.86

Radial Speed 8 km/s

Proper Motion RA -0.019 arcsec/y

Proper Motion Dec -0.013"/y

Alternative Designations

Bayer designation ε Lupi
(epsilon Lupi)

Henry Draper Catalogue HD136504

SAO Catalogue SAO225712

Hipparcos Catalogue HIP75264

Durchmusterung Catalogue CD-4410066

General Catalogue of Variable Stars Var?

Visibility from Your Location

Today's ε Lupi (epsilon Lupi) rise, transit and set times from Shima, China are the following (all times relative to the local timezone Asia/Shanghai):

Azimuth: 134.8° RISE 16:57

Max altitude: 18.2° TRANSIT 20:54

Azimuth: 225.2° SET 0:51

Name:	Shima, China
Latitude:	26° 59' 45.2" N
Longitude:	115° 44' 34.8" E
Timezone:	Asia/Shanghai

Set Location

Other stars in Lupus