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public LocationGreenwich, UK
TimezoneEurope/London
Sunrise: 5:14 
Transit: 13:06 
Sunset: 20:58
wb_twilight   (Nautical Twilight)   What's Visible Now?
All Constellations » Serpens » 

σ Serpentis (sigma Serpentis)

Below the horizon.  Rise: 15:08 | Tran: 21:11 | Set: 3:17
Alt: -8.86°   Az: 282.91°   Direction: West-North-West

σ Serpentis is a hypergiant star of spectral class F0 in the constellation of Serpens.

σ Serpentis visual magnitude is 4.82. Because of its moderate brightness, σ 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.

Image of σ Serpentis (sigma Serpentis) star
DSS2 image of σ Serpentis. The red arrow shows the motion of σ Serpentis during the next 1000 years (-2.58 arcmin in Right Ascension and 0.83 arcmin in declination);

Celestial Coordinates

Apparent

16h 23m 19s
+00° 58’ 22”
07h 02m 21s
23h 25m 40s

J2000

16h 22m 04s
+01° 01’ 45”

Galactic Coordinates

14.78°
33.22°

Finder Chart

Finder chart σ Serpentis (sigma Serpentis) star
Simplified finder chart for σ Serpentis (sigma Serpentis).

Magnitude, Color, Spectral Class

4.82
Hypergiant

2.64
F0V
7217K

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

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

Distance, Radial Speed, Proper Motion

σ Serpentis is distant 89.17 light years from the Sun and it is moving towards the Sun at the speed of 50 kilometers per second.

27.35
89.17
-50 km/s
-0.155 arcsec/y
0.05"/y

Alternative Designations

σ Serpentis
(sigma Serpentis)
50 Serpentis
SAO121540
SAO121540

Visibility from Your Location

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

Azimuth: 89.0°
Max altitude: 39.5°
Azimuth: 271.0°