η Lupi (eta Lupi)

Below the horizon. Rise: 23:21 | Tran: 23:35 | Set: 23:49

Alt: -23.61° Az: 122.74° Direction: East-South-East

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

η Lupi visual magnitude is 3.41. Because of its moderate brightness, η 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 η Lupi. The red arrow shows the motion of η Lupi during the next 10000 years (-3.67 arcmin in Right Ascension and -5.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 16h 01m 48s

Declination -38° 28’ 02”

Hour Angle 18h 40m 41s

Sidereal Time 10h 42m 30s

J2000

Right Ascension 16h 00m 07s

Declination -38° 23’ 48”

Galactic Coordinates

Galactic Longitude 338.77°

Galactic Latitude 11.01°

Finder Chart

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Finder chart for η Lupi (eta Lupi).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 3.41

Class Sub-giant

Absolute magnitude -2.49

Spectral Type B2IV

Color Index (B-V) -0.22

Temperature 14087K

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

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

Star System Properties

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

Main star magnitude 3.41

Secondary star magnitude 7.81

Magnitude difference 4.4

Separation 15 arcsec

Distance, Radial Speed, Proper Motion

η Lupi is distant 493.19 light years from the Sun and it is moving far from the Sun at the speed of 8 kilometers per second.

Distance (parsec) 151.29

Distance (light year) 493.19

Radial Speed 8 km/s

Proper Motion RA -0.022 arcsec/y

Proper Motion Dec -0.032"/y

Alternative Designations

Bayer designation η Lupi
(eta Lupi)

Henry Draper Catalogue HD143118

SAO Catalogue SAO207208

Hipparcos Catalogue HIP78384

Durchmusterung Catalogue CD-3810797

Visibility from Your Location

Today's η Lupi (eta Lupi) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 128.5° RISE 23:21

Max altitude: 0.1° TRANSIT 23:35

Azimuth: 231.5° SET 23:49

Set Location

Other stars in Lupus