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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 7:28 
Transit: 12:14 
Sunset: 17:00
wb_twilight   (Civil Twilight)  
What's Visible Now • Tonight Timeline
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All Constellations » Serpens » 

39 Serpentis

Above the horizon.  Rise: 23:34 | Tran: 6:43 | Set: 13:49
Alt: 51.51°   Az: 186.17°   Direction: South

39 Serpentis is a variable and double hypergiant star of spectral class G0 in the constellation of Serpens.

39 Serpentis visual magnitude is 6.1. Because of its faintness, 39 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.

Image of 39 Serpentis star
DSS2 image of 39 Serpentis. The red arrow shows the motion of 39 Serpentis during the next 1000 years (-2.52 arcmin in Right Ascension and -9.35 arcmin in declination);

Celestial Coordinates

Apparent

15h 54m 22s
+13° 07’ 24”
00h 15m 44s
16h 10m 07s

J2000

15h 53m 12s
+13° 11’ 48”

Galactic Coordinates

24.07°
45.4°

Finder Chart

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Finder chart for 39 Serpentis.

Magnitude, Color, Spectral Class

6.1
Hypergiant

4.89
G0V
5968K

The red dot in the diagram below shows where 39 Serpentis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 39 Serpentis. Attribution: Richard Powell / CC BY-SA

Star System Properties

39 Serpentis is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the 39 Serpentis double sysyem:

6.1
11.7
5.6
98.3 arcsec

Distance, Radial Speed, Proper Motion

39 Serpentis is distant 56.92 light years from the Sun and it is moving far from the Sun at the speed of 36 kilometers per second.

17.46
56.92
36 km/s
-0.151 arcsec/y
-0.561"/y

Alternative Designations

39 Serpentis
SAO101792
SAO101792

Visibility from Your Location

Today's 39 Serpentis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 76.9°
Max altitude: 51.6°
Azimuth: 283.1°