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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: 7:47  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
sleep NighttimeWhat's Visible Now?
All Constellations » Taurus » 

31 Tauri

Altitude: 40.3°   Azimuth: 145.8°   Direction: South-East

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

31 Tauri visual magnitude is 5.67. Because of its reltive faintness, 31 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 31 Tauri:


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

Altitude: 40.3°
Azimuth: 145.8°
Direction: South-East

Celestial coordinates and finder chart of 31 Tauri

31 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 31 Tauri are provided in the following table:

03h 52m 00s
+06° 32’ 04”

The simplified sky map below shows the position of 31 Tauri in the sky:

Finder chart 31 Tauri star
Simplified finder chart for 31 Tauri.

Visibility of 31 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 31 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: 83.5°
Max altitude: 45.1°
Azimuth: 276.5°

Digitized Sky Survey image of 31 Tauri

The image below is a photograph of 31 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 31 Tauri is 0.009 arcsec per year in Right Ascension and -0.008 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of 31 Tauri star
DSS2 image of 31 Tauri. The red arrow shows the motion of 31 Tauri during the next 100000 years (15.00 arcmin in Right Ascension and -13.33 arcmin in declination);

Distance of 31 Tauri from the Sun and relative movement

31 Tauri is distant 704.10 light years from the Sun and it is moving far from the Sun at the speed of 16 kilometers per second.

215.98 pc
704.10 ly
16 km/s
0.009 arcsec/year
-0.008 arcsec/year

Spectral properties of 31 Tauri

31 Tauri belongs to spectral class B5 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where 31 Tauri is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 31 Tauri. Attribution: Richard Powell / CC BY-SA

31 Tauri star system properties

31 Tauri is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the 31 Tauri double sysyem:

0.6 arcsec

Alternative designations of 31 Tauri