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public LocationGreenwich, UK
Sunrise: 5:01 
Transit: 13:04 
Sunset: 21:06
sunny   (Daytime)   What's Visible Now?
All Constellations » Serpens » 

τ2 Serpentis (tau2 Serpentis)

Below the horizon.  Rise: 13:30 | Tran: 20:52 | Set: 4:18
Alt: -15.11°   Az: 37.17°   Direction: North-East

τ2 Serpentis is a main-sequence star of spectral class B9 in the constellation of Serpens.

τ2 Serpentis visual magnitude is 6.22. Because of its faintness, τ2 Serpentis is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

τ2 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.

Image of τ2 Serpentis (tau2 Serpentis) star
DSS2 image of τ2 Serpentis. The red arrow shows the motion of τ2 Serpentis during the next 100000 years (1.67 arcmin in Right Ascension and 15.00 arcmin in declination);

Celestial Coordinates


15h 33m 17s
+15° 58’ 27”
14h 29m 24s
06h 02m 42s


15h 32m 09s
+16° 03’ 21”

Galactic Coordinates


Finder Chart

Finder chart τ2 Serpentis (tau2 Serpentis) star
Simplified finder chart for τ2 Serpentis (tau2 Serpentis).

Magnitude, Color, Spectral Class



The red dot in the diagram below shows where τ2 Serpentis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of τ2 Serpentis. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

τ2 Serpentis is distant 431.22 light years from the Sun and it is moving towards the Sun at the speed of 18 kilometers per second.

132.28 pc
431.22 ly
-18 km/s
0.001 arcsec/y
0.009 "/y

Alternative Designations

τ2 Serpentis
(tau2 Serpentis)
12 Serpentis

Visibility from Your Location

Today's τ2 Serpentis (tau2 Serpentis) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 74.0°
Max altitude: 54.5°
Azimuth: 286.0°