3 Serpentis

Below the horizon. Rise: 22:56 | Tran: 5:22 | Set: 11:45

Alt: -27.05° Az: 322.54° Direction: North-West

3 Serpentis is a hypergiant star of spectral class K0 in the constellation of Serpens.

3 Serpentis visual magnitude is 5.33. Because of its faintness, 3 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.

DSS2 image of 3 Serpentis. The red arrow shows the motion of 3 Serpentis during the next 10000 years (-3.00 arcmin in Right Ascension and 0.83 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 15h 16m 26s

Declination +04° 50’ 51”

Hour Angle 09h 48m 17s

Sidereal Time 01h 04m 44s

J2000

Right Ascension 15h 15m 11s

Declination +04° 56’ 21”

Galactic Coordinates

Galactic Longitude 6.46°

Galactic Latitude 49.21°

Finder Chart

Loading map...

Finder chart for 3 Serpentis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.33

Class Hypergiant

Absolute magnitude -0.45

Spectral Type K0III

Color Index (B-V) 1.09

Temperature 4537K

The red dot in the diagram below shows where 3 Serpentis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 3 Serpentis. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

3 Serpentis is distant 467.05 light years from the Sun and it is moving towards the Sun at the speed of 34 kilometers per second.

Distance (parsec) 143.27

Distance (light year) 467.05

Radial Speed -34 km/s

Proper Motion RA -0.018 arcsec/y

Proper Motion Dec 0.005"/y

Alternative Designations

Flamsteed designation 3 Serpentis

Henry Draper Catalogue HD135482

SAO Catalogue SAO120916

Hipparcos Catalogue HIP74649

Durchmusterung Catalogue BD+05 2985

FK5 Catalogue 562

Visibility from Your Location

Today's 3 Serpentis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 85.2° RISE 22:56

Max altitude: 43.4° TRANSIT 5:22

Azimuth: 274.8° SET 11:45

Set Location

Other stars in Serpens