7 Serpentis

Above the horizon. Rise: 14:42 | Tran: 20:52 | Set: 3:06

Alt: 79.66° Az: 266.81° Direction: West

7 Serpentis is a hypergiant star of spectral class A0 in the constellation of Serpens.

7 Serpentis visual magnitude is 6.28. Because of its faintness, 7 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 7 Serpentis. The red arrow shows the motion of 7 Serpentis during the next 100000 years (-6.67 arcmin in Right Ascension and -6.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 15h 23m 35s

Declination +12° 28’ 39”

Hour Angle 00h 42m 17s

Sidereal Time 16h 05m 52s

J2000

Right Ascension 15h 22m 23s

Declination +12° 34’ 03”

Galactic Coordinates

Galactic Longitude 18.09°

Galactic Latitude 51.83°

Finder Chart

Loading map...

Finder chart for 7 Serpentis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.28

Class Hypergiant

Absolute magnitude 0.61

Spectral Type A0V

Color Index (B-V) -0.02

Temperature 10382K

The red dot in the diagram below shows where 7 Serpentis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 7 Serpentis. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

7 Serpentis is distant 444.75 light years from the Sun and it is moving far from the Sun at the speed of 4 kilometers per second.

Distance (parsec) 136.43

Distance (light year) 444.75

Radial Speed 4 km/s

Proper Motion RA -0.004 arcsec/y

Proper Motion Dec -0.004"/y

Alternative Designations

Flamsteed designation 7 Serpentis

Henry Draper Catalogue HD136831

SAO Catalogue SAO101508

Hipparcos Catalogue HIP75230

Durchmusterung Catalogue BD+13 2928

FK5 Catalogue 3213

Visibility from Your Location

Today's 7 Serpentis rise, transit and set times from Kumbija, Gambia are the following (all times relative to the local timezone Africa/Banjul):

Azimuth: 77.5° RISE 14:42

Max altitude: 89.2° TRANSIT 20:52

Azimuth: 282.5° SET 3:06

Name:	Kumbija, Gambia
Latitude:	13° 16' 0.1" N
Longitude:	14° 10' 59.9" W
Timezone:	Africa/Banjul

In Evidence

Other stars in Serpens

7 Serpentis

Celestial Coordinates

Apparent

J2000

Galactic Coordinates

Finder Chart

Magnitude, Color, Spectral Class

Distance, Radial Speed, Proper Motion

Alternative Designations

Visibility from Your Location

Set Location

In Evidence

Other stars in Serpens

7 Serpentis

Celestial Coordinates

Apparent

J2000

Galactic Coordinates

Finder Chart

Magnitude, Color, Spectral Class

Distance, Radial Speed, Proper Motion

Alternative Designations

Visibility from Your Location