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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 5:13 
Transit: 12:56 
Sunset: 20:39
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All Constellations » Sagittarius » 

18 Sagittarii

Below the horizon.  Rise: 1:20 | Tran: 4:06 | Set: 6:51
Alt: -44.46°   Az: 85.25°   Direction: East

18 Sagittarii is a hypergiant star of spectral class K0 in the constellation of Sagittarius.

18 Sagittarii visual magnitude is 5.6. Because of its faintness, 18 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 18 Sagittarii star
DSS2 image of 18 Sagittarii. The red arrow shows the motion of 18 Sagittarii during the next 1000 years (-2.05 arcmin in Right Ascension and -1.20 arcmin in declination);

Celestial Coordinates

Apparent

18h 26m 39s
-30° 44’ 26”
15h 43m 25s
10h 10m 04s

J2000

18h 25m 01s
-30° 45’ 24”

Galactic Coordinates

2.57°
-8.35°

Finder Chart

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Finder chart for 18 Sagittarii.

Magnitude, Color, Spectral Class

5.6
Hypergiant

-0.91
K0III
4430K

The red dot in the diagram below shows where 18 Sagittarii is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 18 Sagittarii. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

18 Sagittarii is distant 653.31 light years from the Sun and it is moving towards the Sun at the speed of 19 kilometers per second.

200.40
653.31
-19 km/s
-0.123 arcsec/y
-0.072"/y

Alternative Designations

18 Sagittarii
SAO210116
SAO210116

Visibility from Your Location

Today's 18 Sagittarii rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 120.7°
Max altitude: 7.8°
Azimuth: 239.3°