υ Lupi (upsilon Lupi)

Below the horizon. Never rises today

Alt: -63.48° Az: 282.46° Direction: West-North-West

υ Lupi is a double hypergiant star of spectral class A0 in the constellation of Lupus.

υ Lupi visual magnitude is 5.37. Because of its faintness, υ Lupi is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of υ Lupi. The red arrow shows the motion of υ Lupi during the next 10000 years (-6.17 arcmin in Right Ascension and -7.83 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 15h 26m 25s

Declination -39° 47’ 55”

Hour Angle 09h 41m 42s

Sidereal Time 01h 08m 07s

J2000

Right Ascension 15h 24m 44s

Declination -39° 42’ 37”

Galactic Coordinates

Galactic Longitude 332.42°

Galactic Latitude 14.23°

Finder Chart

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Finder chart for υ Lupi (upsilon Lupi).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.37

Class Hypergiant

υ Lupi is also a Si chemically peculiar star.

Absolute magnitude 0.01

Spectral Type A0

Color Index (B-V) -0.11

Temperature 11744K

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

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

Star System Properties

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

Main star magnitude 5.37

Secondary star magnitude 10.87

Magnitude difference 5.5

Separation 1.4 arcsec

Distance, Radial Speed, Proper Motion

υ Lupi is distant 384.43 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.

Distance (parsec) 117.92

Distance (light year) 384.43

Radial Speed -8 km/s

Proper Motion RA -0.037 arcsec/y

Proper Motion Dec -0.047"/y

Alternative Designations

Bayer designation υ Lupi
(upsilon Lupi)

Henry Draper Catalogue HD136933

SAO Catalogue SAO206597

Hipparcos Catalogue HIP75439

Durchmusterung Catalogue CD-39 9827

Visibility from Your Location

υ Lupi (upsilon Lupi) is currently not visible from Greenwich, UK

Set Location

Other stars in Lupus