25 Serpentis

Above the horizon. Rise: 10:58 | Tran: 16:47 | Set: 22:35

Alt: 35.88° Az: 193.19° Direction: South-South-West

25 Serpentis is a giant star of spectral class B8 in the constellation of Serpens.

25 Serpentis visual magnitude is 5.4. Because of its faintness, 25 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 25 Serpentis. The red arrow shows the motion of 25 Serpentis during the next 10000 years (-4.50 arcmin in Right Ascension and -6.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 15h 47m 22s

Declination -01° 52’ 48”

Hour Angle 00h 42m 37s

Sideral Time 16h 30m 00s

J2000

Right Ascension 15h 46m 05s

Declination -01° 48’ 15”

Galactic Coordinates

Galactic Longitude 5.53°

Galactic Latitude 38.99°

Finder Chart

Simplified finder chart for 25 Serpentis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.4

Class Giant

Absolute magnitude -0.09

Spectral Type B8III

Color Index (B-V) -0.03

Temperature 10516K

The red dot in the diagram below shows where 25 Serpentis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 25 Serpentis. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

25 Serpentis is distant 408.01 light years from the Sun and it is moving towards the Sun at the speed of 12 kilometers per second.

Distance (parsec) 125.16

Distance (light year) 408.01

Radial Speed -12 km/s

Proper Motion RA -0.027 arcsec/y

Proper Motion Dec -0.038"/y

Alternative Designations

Flamsteed designation 25 Serpentis

Henry Draper Catalogue HD140873

SAO Catalogue SAO140740

Hipparcos Catalogue HIP77227

Durchmusterung Catalogue BD-01 3092

Visibility from Your Location

Today's 25 Serpentis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 91.9° RISE 10:58

Max altitude: 36.6° TRANSIT 16:47

Azimuth: 268.1° SET 22:35

Name:	Greenwich, UK
Latitude:	51° 28' 48.0" N
Longitude:	0° 0' 0.0" E
Timezone:	Europe/London

Location

Other stars in Serpens