We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Donate now and help us to keep this site free and ad-free!
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:47  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
sunny DaytimeWhat's Visible Now?
All Constellations » Sagittarius » 

4 Sagittarii

Altitude: 14.7°   Azimuth: 179.1°   Direction: South

4 Sagittarii is a main-sequence star in the constellation of Sagittarius.

4 Sagittarii visual magnitude is 4.76. Because of its moderate brightness, 4 Sagittarii 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 4 Sagittarii:


4 Sagittarii is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 14.7°
Azimuth: 179.1°
Direction: South

Celestial coordinates and finder chart of 4 Sagittarii

4 Sagittarii 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 4 Sagittarii are provided in the following table:

17h 59m 47s
-23° 48’ 57”

The simplified sky map below shows the position of 4 Sagittarii in the sky:

Finder chart 4 Sagittarii star
Simplified finder chart for 4 Sagittarii.

Visibility of 4 Sagittarii 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 4 Sagittarii 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: 113.8°
Max altitude: 14.7°
Azimuth: 246.2°

Digitized Sky Survey image of 4 Sagittarii

The image below is a photograph of 4 Sagittarii 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 4 Sagittarii is 0.001 arcsec per year in Right Ascension and -0.047 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 4 Sagittarii star
DSS2 image of 4 Sagittarii. The red arrow shows the motion of 4 Sagittarii during the next 10000 years (0.17 arcmin in Right Ascension and -7.83 arcmin in declination);

Distance of 4 Sagittarii from the Sun and relative movement

4 Sagittarii is distant 436.41 light years from the Sun and it is moving towards the Sun at the speed of 18 kilometers per second.

133.87 pc
436.41 ly
-18 km/s
0.001 arcsec/year
-0.047 arcsec/year

Spectral properties of 4 Sagittarii

4 Sagittarii belongs to spectral class B9 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where 4 Sagittarii is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 4 Sagittarii. Attribution: Richard Powell / CC BY-SA

Alternative designations of 4 Sagittarii

4 Sagittarii