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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:48  
clear_day Transit: 12:56  
SunsetSet: 21:05 south
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All Constellations » Lupus » 

ψ1 Lupi (psi1 Lupi)

ψ1 Lupi is a giant star in the constellation of Lupus.

ψ1 Lupi visual magnitude is 4.67. Because of its moderate brightness, ψ1 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 ψ1 Lupi:

ψ1 Lupi (psi1 Lupi) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of ψ1 Lupi

ψ1 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 ψ1 Lupi are provided in the following table:

15h 39m 46s
-34° 24’ 42”

The simplified sky map below shows the position of ψ1 Lupi in the sky:

Finder chart ψ1 Lupi (psi1 Lupi) star
Simplified finder chart for ψ1 Lupi (psi1 Lupi).

Visibility of ψ1 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 ψ1 Lupi (psi1 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: 124.4°
Max altitude: 4.1°
Azimuth: 235.6°
ψ1 Lupi (psi1 Lupi) is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of ψ1 Lupi

The image below is a photograph of ψ1 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 ψ1 Lupi is 0.004 arcsec per year in Right Ascension and -0.015 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of ψ1 Lupi (psi1 Lupi) star
DSS2 image of ψ1 Lupi. The red arrow shows the motion of ψ1 Lupi during the next 10000 years (0.67 arcmin in Right Ascension and -2.50 arcmin in declination);

Distance of ψ1 Lupi from the Sun and relative movement

ψ1 Lupi is distant 244.74 light years from the Sun and it is moving towards the Sun at the speed of 23 kilometers per second.

75.08 pc
244.74 ly
-23 km/s
0.004 arcsec/year
-0.015 arcsec/year

Spectral properties of ψ1 Lupi

ψ1 Lupi belongs to spectral class G8 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where ψ1 Lupi is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of ψ1 Lupi. Attribution: Richard Powell / CC BY-SA

Alternative designations of ψ1 Lupi

ψ1 Lupi
(psi1 Lupi)