16 Ophiuchi

Above the horizon. Rise: 19:44 | Tran: 1:51 | Set: 7:53

Alt: 17.59° Az: 248.31° Direction: West-South-West

16 Ophiuchi is a giant star of spectral class B9 in the constellation of Ophiuchus.

16 Ophiuchi visual magnitude is 6.03. Because of its faintness, 16 Ophiuchi 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 Ophiuchi. The red arrow shows the motion of 16 Ophiuchi during the next 10000 years (0.33 arcmin in Right Ascension and 2.17 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 16h 46m 47s

Declination +00° 58’ 31”

Hour Angle 04h 09m 27s

Sidereal Time 20h 56m 14s

J2000

Right Ascension 16h 45m 29s

Declination +01° 01’ 13”

Galactic Coordinates

Galactic Longitude 18.32°

Galactic Latitude 28.22°

Finder Chart

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Finder chart for 16 Ophiuchi.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.03

Class Giant

Absolute magnitude 0.21

Spectral Type B9III

Color Index (B-V) -0.02

Temperature 10382K

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

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

Distance, Radial Speed, Proper Motion

16 Ophiuchi is distant 476.61 light years from the Sun and it is moving towards the Sun at the speed of 13 kilometers per second.

Distance (parsec) 146.20

Distance (light year) 476.61

Radial Speed -13 km/s

Proper Motion RA 0.002 arcsec/y

Proper Motion Dec 0.013"/y

Alternative Designations

Flamsteed designation 16 Ophiuchi

Henry Draper Catalogue HD151133

SAO Catalogue SAO121834

Hipparcos Catalogue HIP82037

Durchmusterung Catalogue BD+01 3298

Visibility from Your Location

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

Azimuth: 89.0° RISE 19:44

Max altitude: 39.5° TRANSIT 1:51

Azimuth: 271.0° SET 7:53

Set Location

Other stars in Ophiuchus