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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:54  
clear_day Transit: 11:51  
SunsetSet: 15:49 south
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All Constellations » Sagitta » 

β Sagittae (beta Sagittae)

Altitude: -15.3°   Azimuth: 327.4°   Direction: North-North-West

β Sagittae is a giant star in the constellation of Sagitta.

β Sagittae visual magnitude is 4.37. Because of its moderate brightness, β Sagittae should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about β Sagittae:


β Sagittae (beta Sagittae) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -15.3°
Azimuth: 327.4°
Direction: North-North-West

Celestial coordinates and finder chart of β Sagittae

β Sagittae is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of β Sagittae are provided in the following table:

19h 41m 02s
+17° 28’ 33”

The simplified sky map below shows the position of β Sagittae in the sky:

Finder chart β Sagittae (beta Sagittae) star
Simplified finder chart for β Sagittae (beta Sagittae).

Visibility of β Sagittae from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's β Sagittae (beta Sagittae) rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 72.5°
Max altitude: 56.0°
Azimuth: 287.5°

Digitized Sky Survey image of β Sagittae

The image below is a photograph of β Sagittae from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of β Sagittae is 0.01 arcsec per year in Right Ascension and -0.032 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of β Sagittae (beta Sagittae) star
DSS2 image of β Sagittae. The red arrow shows the motion of β Sagittae during the next 10000 years (1.67 arcmin in Right Ascension and -5.33 arcmin in declination);

Distance of β Sagittae from the Sun and relative movement

β Sagittae is distant 466.38 light years from the Sun and it is moving towards the Sun at the speed of 22 kilometers per second.

143.06 pc
466.38 ly
-22 km/s
0.01 arcsec/year
-0.032 arcsec/year

Spectral properties of β Sagittae

β Sagittae belongs to spectral class G8 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where β Sagittae is situated in the Hertzsprung–Russell diagram.

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

Alternative designations of β Sagittae

β Sagittae
(beta Sagittae)