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public LocationGreenwich, UK
Sunrise: 4:42 
Transit: 13:00 
Sunset: 21:18
sunny   (Daytime)   What's Visible Now?

θ1 Tauri (theta1 Tauri)

Above the horizon.  Rise: 4:02 | Tran: 11:24 | Set: 18:46
Altitude: 22.4°   Azimuth: 92.3°   Direction: East

θ1 Tauri is a multiple hypergiant star of spectral class K0 in the constellation of Taurus.

θ1 Tauri visual magnitude is 3.84. Because of its moderate brightness, θ1 Tauri is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

Celestial coordinates and finder chart of θ1 Tauri

Finder chart θ1 Tauri (theta1 Tauri) star
Simplified finder chart for θ1 Tauri (theta1 Tauri).

θ1 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 θ1 Tauri are provided in the following table:

04h 28m 34s
+15° 57’ 43”
Image of θ1 Tauri (theta1 Tauri) star
DSS2 image of θ1 Tauri. The red arrow shows the motion of θ1 Tauri during the next 1000 years (1.72 arcmin in Right Ascension and -0.45 arcmin in declination);

Key facts about θ1 Tauri


and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where θ1 Tauri is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of θ1 Tauri. Attribution: Richard Powell / CC BY-SA

θ1 Tauri star system properties

θ1 Tauri is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the θ1 Tauri double sysyem:

337.4 arcsec

Distance of θ1 Tauri from the Sun and relative movement

θ1 Tauri is distant 157.79 light years from the Sun and it is moving far from the Sun at the speed of 40 kilometers per second.

48.40 pc
157.79 ly
40 km/s
0.103 arcsec/year
-0.027 arcsec/year

Alternative designations of θ1 Tauri

θ1 Tauri
(theta1 Tauri)

Visibility of θ1 Tauri from your location

Today's θ1 Tauri (theta1 Tauri) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 74.0°
Max altitude: 54.5°
Azimuth: 286.0°