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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 6:41 
Transit: 12:53 
Sunset: 19:05
wb_twilight   (Astronomical Twilight)  
What's Visible Now • Tonight Timeline
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All Constellations » Sagittarius » 

16 Sagittarii

Below the horizon.  Rise: 15:16 | Tran: 19:24 | Set: 23:31
Alt: -46.02°   Az: 299.78°   Direction: West-North-West

16 Sagittarii is a double bright giant star of spectral class O9 in the constellation of Sagittarius.

16 Sagittarii visual magnitude is 5.95. Because of its faintness, 16 Sagittarii 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.

Image of 16 Sagittarii star
DSS2 image of 16 Sagittarii. The red arrow shows the motion of 16 Sagittarii during the next 100000 years (-3.33 arcmin in Right Ascension and 1.67 arcmin in declination);

Celestial Coordinates

Apparent

18h 16m 41s
-20° 22’ 42”
09h 19m 58s
03h 36m 39s

J2000

18h 15m 12s
-20° 23’ 17”

Galactic Coordinates

10.76°
-1.58°

Finder Chart

Finder chart 16 Sagittarii star
Simplified finder chart for 16 Sagittarii.

Magnitude, Color, Spectral Class

5.95
Bright giant

-24.05
O9II
9882K

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

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

Star System Properties

16 Sagittarii is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the 16 Sagittarii double sysyem:

5.95
12.95
7
6 arcsec

Distance, Radial Speed, Proper Motion

16 Sagittarii is distant 32,600,000.00 light years from the Sun and it is moving towards the Sun at the speed of 5 kilometers per second.

10,000,000.00
32,600,000.00
-5 km/s
-0.002 arcsec/y
0.001"/y

Alternative Designations

16 Sagittarii
SAO186544
SAO186544

Visibility from Your Location

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

Azimuth: 110.4°
Max altitude: 18.1°
Azimuth: 249.6°