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public LocationGreenwich, UK
Sunrise: 4:42 
Transit: 13:00 
Sunset: 21:17
sunny   (Daytime)   What's Visible Now?

ο Serpentis (omicron Serpentis)

Below the horizon.  Rise: 19:55 | Tran: 0:46 | Set: 5:42
Altitude: -9.1°   Azimuth: 99.3°   Direction: East

ο Serpentis is a variable main-sequence star of spectral class A2 in the constellation of Serpens.

ο Serpentis visual magnitude is 4.26. Because of its moderate brightness, ο Serpentis 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.

Celestial coordinates and finder chart of ο Serpentis

Finder chart ο Serpentis (omicron Serpentis) star
Simplified finder chart for ο Serpentis (omicron Serpentis).

ο 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 ο Serpentis are provided in the following table:

17h 41m 24s
-12° 52’ 31”
Image of ο Serpentis (omicron Serpentis) star
DSS2 image of ο Serpentis. The red arrow shows the motion of ο Serpentis during the next 10000 years (-11.50 arcmin in Right Ascension and -8.67 arcmin in declination);

Key facts about ο Serpentis


and has a luminosity class of V corresponding to a main-sequence star.


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

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

Distance of ο Serpentis from the Sun and relative movement

ο Serpentis is distant 167.95 light years from the Sun and it is moving towards the Sun at the speed of 30 kilometers per second.

51.52 pc
167.95 ly
-30 km/s
-0.069 arcsec/year
-0.052 arcsec/year

Alternative designations of ο Serpentis

ο Serpentis
(omicron Serpentis)
56 Serpentis

Visibility of ο Serpentis from your location

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

Azimuth: 102.9°
Max altitude: 25.6°
Azimuth: 257.1°