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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 7:14 
Transit: 12:14 
Sunset: 17:14
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All Constellations » Serpens » 

η Serpentis (eta Serpentis)

Above the horizon.  Rise: 2:56 | Tran: 8:40 | Set: 14:23
Alt: 12.33°   Az: 110.93°   Direction: East-South-East

η Serpentis is a variable and double hypergiant star of spectral class K0 in the constellation of Serpens.

η Serpentis visual magnitude is 3.26. Because of its moderate brightness, η 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 η Serpentis (eta Serpentis) star
DSS2 image of η Serpentis. The red arrow shows the motion of η Serpentis during the next 1000 years (-9.12 arcmin in Right Ascension and -11.67 arcmin in declination);

Celestial Coordinates

Apparent

18h 22m 37s
-02° 53’ 07”
19h 35m 57s
13h 58m 35s

J2000

18h 21m 18s
-02° 53’ 56”

Galactic Coordinates

26.91°
5.36°

Finder Chart

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Finder chart for η Serpentis (eta Serpentis).

Magnitude, Color, Spectral Class

3.26
Hypergiant

1.87
K0III
4892K

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

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

Star System Properties

η Serpentis is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the η Serpentis double sysyem:

3.26
11.96
8.7
179.7 arcsec

Distance, Radial Speed, Proper Motion

η Serpentis is distant 61.73 light years from the Sun and it is moving far from the Sun at the speed of 9 kilometers per second.

18.94
61.73
9 km/s
-0.547 arcsec/y
-0.7"/y

Alternative Designations

η Serpentis
(eta Serpentis)
58 Serpentis
SAO142241
SAO142241

Visibility from Your Location

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

Azimuth: 92.9°
Max altitude: 35.6°
Azimuth: 267.1°