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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:45  
clear_day Transit: 11:48  
SunsetSet: 15:51 south
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All Constellations » Lupus » 

ψ2 Lupi (psi2 Lupi)

Altitude: -62.3°   Azimuth: 295.2°   Direction: West-North-West

ψ2 Lupi is a main-sequence star in the constellation of Lupus.

ψ2 Lupi visual magnitude is 4.75. Because of its moderate brightness, ψ2 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 ψ2 Lupi:


ψ2 Lupi (psi2 Lupi) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -62.3°
Azimuth: 295.2°
Direction: West-North-West

Celestial coordinates and finder chart of ψ2 Lupi

ψ2 Lupi is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of ψ2 Lupi are provided in the following table:

15h 42m 41s
-34° 42’ 38”

The simplified sky map below shows the position of ψ2 Lupi in the sky:

Finder chart ψ2 Lupi (psi2 Lupi) star
Simplified finder chart for ψ2 Lupi (psi2 Lupi).

Visibility of ψ2 Lupi from your location

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

Today's ψ2 Lupi (psi2 Lupi) rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 124.7°
Max altitude: 3.8°
Azimuth: 235.3°

Digitized Sky Survey image of ψ2 Lupi

The image below is a photograph of ψ2 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 ψ2 Lupi is -0.021 arcsec per year in Right Ascension and -0.029 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of ψ2 Lupi (psi2 Lupi) star
DSS2 image of ψ2 Lupi. The red arrow shows the motion of ψ2 Lupi during the next 10000 years (-3.50 arcmin in Right Ascension and -4.83 arcmin in declination);

Distance of ψ2 Lupi from the Sun and relative movement

ψ2 Lupi is distant 395.63 light years from the Sun and it is moving far from the Sun at the speed of 4 kilometers per second.

121.36 pc
395.63 ly
4 km/s
-0.021 arcsec/year
-0.029 arcsec/year

Spectral properties of ψ2 Lupi

ψ2 Lupi belongs to spectral class B5 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where ψ2 Lupi is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of ψ2 Lupi. Attribution: Richard Powell / CC BY-SA

Alternative designations of ψ2 Lupi

ψ2 Lupi
(psi2 Lupi)