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
sleep NighttimeWhat's Visible Now?
All Constellations » Taurus » 

40 Tauri

Altitude: 27.7°   Azimuth: 119.3°   Direction: East-South-East

40 Tauri is a main-sequence star in the constellation of Taurus.

40 Tauri visual magnitude is 5.33. Because of its reltive faintness, 40 Tauri should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 40 Tauri:


40 Tauri is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 27.7°
Azimuth: 119.3°
Direction: East-South-East

Celestial coordinates and finder chart of 40 Tauri

40 Tauri 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 40 Tauri are provided in the following table:

04h 03m 44s
+05° 26’ 08”

The simplified sky map below shows the position of 40 Tauri in the sky:

Finder chart 40 Tauri star
Simplified finder chart for 40 Tauri.

Visibility of 40 Tauri 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 40 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: 84.6°
Max altitude: 44.0°
Azimuth: 275.4°

Digitized Sky Survey image of 40 Tauri

The image below is a photograph of 40 Tauri 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 40 Tauri is 0.003 arcsec per year in Right Ascension and -0.01 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 40 Tauri star
DSS2 image of 40 Tauri. The red arrow shows the motion of 40 Tauri during the next 10000 years (0.50 arcmin in Right Ascension and -1.67 arcmin in declination);

Distance of 40 Tauri from the Sun and relative movement

40 Tauri is distant 1,044.87 light years from the Sun and it is moving far from the Sun at the speed of 11 kilometers per second.

320.51 pc
1,044.87 ly
11 km/s
0.003 arcsec/year
-0.01 arcsec/year

Spectral properties of 40 Tauri

40 Tauri belongs to spectral class B3 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where 40 Tauri is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 40 Tauri. Attribution: Richard Powell / CC BY-SA

Alternative designations of 40 Tauri