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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: 7:40  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
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All Constellations » Serpens » 

ψ Serpentis (psi Serpentis)

Altitude: -29.7°   Azimuth: 322.9°   Direction: North-West

ψ Serpentis is a multiple main-sequence star in the constellation of Serpens.

ψ Serpentis visual magnitude is 5.88. Because of its reltive faintness, ψ Serpentis should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about ψ Serpentis:


ψ Serpentis (psi Serpentis) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -29.7°
Azimuth: 322.9°
Direction: North-West

Celestial coordinates and finder chart of ψ Serpentis

ψ Serpentis 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 Serpentis are provided in the following table:

15h 44m 01s
+02° 30’ 54”

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

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

Visibility of ψ Serpentis 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 Serpentis (psi Serpentis) 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: 87.5°
Max altitude: 41.0°
Azimuth: 272.5°

Digitized Sky Survey image of ψ Serpentis

The image below is a photograph of ψ Serpentis 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 Serpentis is -0.054 arcsec per year in Right Ascension and -0.151 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of ψ Serpentis (psi Serpentis) star
DSS2 image of ψ Serpentis. The red arrow shows the motion of ψ Serpentis during the next 1000 years (-0.90 arcmin in Right Ascension and -2.52 arcmin in declination);

Distance of ψ Serpentis from the Sun and relative movement

ψ Serpentis is distant 47.83 light years from the Sun and it is moving far from the Sun at the speed of 19 kilometers per second.

14.67 pc
47.83 ly
19 km/s
-0.054 arcsec/year
-0.151 arcsec/year

Spectral properties of ψ Serpentis

ψ Serpentis belongs to spectral class G2 and has a luminosity class of V corresponding to a main-sequence star.


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

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

ψ Serpentis star system properties

ψ Serpentis is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the ψ Serpentis double sysyem:

370 arcsec

Alternative designations of ψ Serpentis

ψ Serpentis
(psi Serpentis)
23 Serpentis
Gl 596.1A