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public LocationGreenwich, UK
Sunrise: 5:12 
Transit: 13:06 
Sunset: 20:59
wb_twilight   (Nautical Twilight)   What's Visible Now?
All Constellations » Sagittarius » 

υ Sagittarii (upsilon Sagittarii)

Above the horizon.  Rise: 19:39 | Tran: 0:14 | Set: 4:52
Alt: 16.32°   Az: 145.74°   Direction: South-East

υ Sagittarii is a variable and double main-sequence star of spectral class B2 in the constellation of Sagittarius.

υ Sagittarii visual magnitude is 4.61. Because of its moderate brightness, υ Sagittarii is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

Image of υ Sagittarii (upsilon Sagittarii) star
DSS2 image of υ Sagittarii. The red arrow shows the motion of υ Sagittarii during the next 100000 years (3.33 arcmin in Right Ascension and -10.00 arcmin in declination);

Celestial Coordinates


19h 23m 07s
-15° 54’ 24”
21h 43m 16s
17h 06m 24s


19h 21m 43s
-15° 57’ 18”

Galactic Coordinates


Finder Chart

Finder chart υ Sagittarii (upsilon Sagittarii) star
Simplified finder chart for υ Sagittarii (upsilon Sagittarii).

Magnitude, Color, Spectral Class



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

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

Star System Properties

υ 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 υ Sagittarii double sysyem:

0 arcsec

Distance, Radial Speed, Proper Motion

υ Sagittarii is distant 1,671.79 light years from the Sun and it is moving far from the Sun at the speed of 9 kilometers per second.

9 km/s
0.002 arcsec/y

Alternative Designations

υ Sagittarii
(upsilon Sagittarii)
46 Sagittarii

Visibility from Your Location

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

Azimuth: 105.9°
Max altitude: 22.6°
Azimuth: 254.1°