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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: 7:44  
clear_day Transit: 11:48  
SunsetSet: 15:51 south
sunny DaytimeWhat's Visible Now?
All Constellations » Scorpius » 

ψ Scorpii (psi Scorpii)

Altitude: 18.6°   Azimuth: 136.0°   Direction: South-East

ψ Scorpii is a sub-giant star in the constellation of Scorpius.

ψ Scorpii visual magnitude is 4.94. Because of its moderate brightness, ψ Scorpii 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 ψ Scorpii:


ψ Scorpii (psi Scorpii) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 18.6°
Azimuth: 136.0°
Direction: South-East

Celestial coordinates and finder chart of ψ Scorpii

ψ Scorpii is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of ψ Scorpii are provided in the following table:

16h 11m 59s
-10° 03’ 51”

The simplified sky map below shows the position of ψ Scorpii in the sky:

Finder chart ψ Scorpii (psi Scorpii) star
Simplified finder chart for ψ Scorpii (psi Scorpii).

Visibility of ψ Scorpii 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 ψ Scorpii (psi Scorpii) 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: 100.1°
Max altitude: 28.5°
Azimuth: 259.9°

Digitized Sky Survey image of ψ Scorpii

The image below is a photograph of ψ Scorpii 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 ψ Scorpii is -0.001 arcsec per year in Right Ascension and -0.014 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of ψ Scorpii (psi Scorpii) star
DSS2 image of ψ Scorpii. The red arrow shows the motion of ψ Scorpii during the next 10000 years (-0.17 arcmin in Right Ascension and -2.33 arcmin in declination);

Distance of ψ Scorpii from the Sun and relative movement

ψ Scorpii is distant 164.73 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

50.53 pc
164.73 ly
-6 km/s
-0.001 arcsec/year
-0.014 arcsec/year

Spectral properties of ψ Scorpii

ψ Scorpii belongs to spectral class A3 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where ψ Scorpii is situated in the Hertzsprung–Russell diagram.

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

Alternative designations of ψ Scorpii

ψ Scorpii
(psi Scorpii)