Your guide to the Solar System and the night sky
🌎 Location: Greenwich, United Kingdom [change]

τ Tauri (tau Tauri)

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

τ Tauri visual magnitude is 4.28. Because of its moderate brightness, τ Tauri 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 τ Tauri:

4.28
Main-sequence
τ Tauri (tau Tauri) is above the horizon from Greenwich, United Kingdom [change]. Altitude: 21°.

Celestial coordinates and finder chart of τ Tauri

τ 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 τ Tauri are provided in the following table:

04h 42m 14s
+22° 57’ 24”
176.64°
-15.07°
Taurus

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

Finder chart τ Tauri (tau Tauri) star
Simplified finder chart for τ Tauri (tau Tauri).

Visibility of τ Tauri from your location

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

Today's τ Tauri (tau Tauri) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 67.0°
Max altitude: 61.5°
Azimuth: 293.0°
τ Tauri (tau Tauri) is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of τ Tauri

The image below is a photograph of τ 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 τ Tauri is -0.002 arcsec per year in Right Ascension and -0.016 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of τ Tauri (tau Tauri) star
DSS2 image of τ Tauri. The red arrow shows the motion of τ Tauri during the next 10000 years (-0.33 arcmin in Right Ascension and -2.67 arcmin in declination);

Distance of τ Tauri from the Sun and relative movement

τ Tauri is distant 400.49 light years from the Sun and it is moving far from the Sun at the speed of 15 kilometers per second.

122.85 pc
400.49 ly
15 km/s
-0.002 arcsec/year
-0.016 arcsec/year

Spectral properties of τ Tauri

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

-1.17
B3V
12103K

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

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

τ Tauri star system properties

τ Tauri 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 τ Tauri double sysyem:

4.28
4.98
0.7
0.1 arcsec

Alternative designations of τ Tauri

τ Tauri
(tau Tauri)
SAO76721
SAO76721