16 Serpentis

Below the horizon. Rise: 9:56 | Tran: 16:45 | Set: 23:34

Alt: -21.08° Az: 321.36° Direction: North-West

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

16 Serpentis visual magnitude is 5.26. Because of its faintness, 16 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 16 Serpentis. The red arrow shows the motion of 16 Serpentis during the next 1000 years (0.75 arcmin in Right Ascension and -2.15 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 15h 37m 40s

Declination +09° 55’ 46”

Hour Angle 09h 34m 57s

Sideral Time 01h 12m 38s

J2000

Right Ascension 15h 36m 29s

Declination +10° 00’ 35”

Galactic Coordinates

Galactic Longitude 17.21°

Galactic Latitude 47.57°

Finder Chart

Simplified finder chart for 16 Serpentis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.26

Class Hypergiant

Absolute magnitude 0.97

Spectral Type K0III

Color Index (B-V) 0.95

Temperature 4866K

The red dot in the diagram below shows where 16 Serpentis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 16 Serpentis. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

16 Serpentis is distant 234.70 light years from the Sun and it is moving far from the Sun at the speed of 8 kilometers per second.

Distance (parsec) 71.99

Distance (light year) 234.70

Radial Speed 8 km/s

Proper Motion RA 0.045 arcsec/y

Proper Motion Dec -0.129"/y

Alternative Designations

Flamsteed designation 16 Serpentis

Henry Draper Catalogue HD139195

SAO Catalogue SAO101640

Hipparcos Catalogue HIP76425

Durchmusterung Catalogue BD+10 2884

Visibility from Your Location

Today's 16 Serpentis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 80.1° RISE 9:56

Max altitude: 48.4° TRANSIT 16:45

Azimuth: 279.9° SET 23:34

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

Location

Other stars in Serpens