4 Serpentis

Below the horizon. Rise: 9:18 | Tran: 15:18 | Set: 21:17

Alt: -37.58° Az: 12.39° Direction: North-North-East

4 Serpentis is a main-sequence star of spectral class A4 in the constellation of Serpens.

4 Serpentis visual magnitude is 5.63. Because of its faintness, 4 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 4 Serpentis. The red arrow shows the motion of 4 Serpentis during the next 1000 years (-1.78 arcmin in Right Ascension and 0.25 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 15h 17m 05s

Declination +00° 16’ 55”

Hour Angle 12h 39m 09s

Sideral Time 03h 56m 14s

J2000

Right Ascension 15h 15m 49s

Declination +00° 22’ 19”

Galactic Coordinates

Galactic Longitude 1.32°

Galactic Latitude 46.23°

Finder Chart

Simplified finder chart for 4 Serpentis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.63

Class Main-sequence

Absolute magnitude 2.16

Spectral Type A4V

Color Index (B-V) 0.18

Temperature 8321K

The red dot in the diagram below shows where 4 Serpentis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 4 Serpentis. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

4 Serpentis is distant 161.39 light years from the Sun and it is moving towards the Sun at the speed of 12 kilometers per second.

Distance (parsec) 49.50

Distance (light year) 161.39

Radial Speed -12 km/s

Proper Motion RA -0.107 arcsec/y

Proper Motion Dec 0.015"/y

Alternative Designations

Flamsteed designation 4 Serpentis

Henry Draper Catalogue HD135559

SAO Catalogue SAO120920

Hipparcos Catalogue HIP74689

Durchmusterung Catalogue BD+00 3327

Visibility from Your Location

Today's 4 Serpentis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 89.7° RISE 9:18

Max altitude: 38.8° TRANSIT 15:18

Azimuth: 270.3° SET 21:17

Set Location

Other stars in Serpens