Your Guide to the Solar System and the Night Sky
This site is free and ad-free thanks to the support of our users. If you can, please consider a donation.
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 6:55  
clear_day Transit: 12:49  
SunsetSet: 18:41 south
sleep NighttimeWhat's Visible Now
All Constellations » Taurus » 

Atlas - 27 Tauri

Altitude: 46.7°   Azimuth: 112.3°   Direction: East-South-East

Atlas, also designated as 27 Tauri , is a variable and multiple giant star in the constellation of Taurus.

Atlas visual magnitude is 3.63. Because of its moderate brightness, Atlas 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 Atlas:


Atlas - 27 Tauri is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 46.7°
Azimuth: 112.3°
Direction: East-South-East

Celestial coordinates and finder chart of Atlas

Atlas 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 Atlas are provided in the following table:

03h 49m 09s
+24° 03’ 11”

The simplified sky map below shows the position of Atlas in the sky:

Finder chart Atlas - 27 Tauri star
Simplified finder chart for Atlas - 27 Tauri.

Visibility of Atlas 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 Atlas - 27 Tauri 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: 65.9°
Max altitude: 62.6°
Azimuth: 294.1°

Digitized Sky Survey image of Atlas

The image below is a photograph of Atlas 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 Atlas is 0.018 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 Atlas - 27 Tauri star
DSS2 image of Atlas. The red arrow shows the motion of Atlas during the next 10000 years (3.00 arcmin in Right Ascension and -7.83 arcmin in declination);

Distance of Atlas from the Sun and relative movement

Atlas is distant 380.40 light years from the Sun and it is moving far from the Sun at the speed of 9 kilometers per second.

116.69 pc
380.40 ly
9 km/s
0.018 arcsec/year
-0.047 arcsec/year

Spectral properties of Atlas

Atlas belongs to spectral class B8 and has a luminosity class of III corresponding to a giant star.


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

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

Atlas star system properties

Atlas 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 Atlas double sysyem:

0 arcsec

Alternative designations of Atlas