υ Lupi (upsilon Lupi)

Above the horizon. Rise: 15:47 | Tran: 21:05 | Set: 2:27

Alt: 3.10° Az: 228.21° Direction: South-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 05h 02m 50s

Sidereal Time 20h 29m 16s

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

Today's υ Lupi (upsilon Lupi) rise, transit and set times from Kabo, Nigeria are the following (all times relative to the local timezone Africa/Lagos):

Azimuth: 129.8° RISE 15:47

Max altitude: 38.3° TRANSIT 21:05

Azimuth: 230.2° SET 2:27

Name:	Kabo, Nigeria
Latitude:	11° 51' 22.0" N
Longitude:	8° 10' 12.7" E
Timezone:	Africa/Lagos

Set Location

Other stars in Lupus