Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 6:43  
clear_day Transit: 12:51  
SunsetSet: 18:59 south
sunny DaytimeWhat's Visible Now
All Constellations » Taurus » 

φ Tauri (phi Tauri)

Altitude: -10.9°   Azimuth: 353.3°   Direction: North

φ Tauri is a double giant star in the constellation of Taurus.

φ Tauri visual magnitude is 4.95. Because of its moderate brightness, φ 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 φ Tauri:


φ Tauri (phi Tauri) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -10.9°
Azimuth: 353.3°
Direction: North

Celestial coordinates and finder chart of φ Tauri

φ Tauri is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of φ Tauri are provided in the following table:

04h 20m 21s
+27° 21’ 02”

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

Finder chart φ Tauri (phi Tauri) star
Simplified finder chart for φ Tauri (phi Tauri).

Visibility of φ 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 φ Tauri (phi 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: 62.6°
Max altitude: 65.9°
Azimuth: 297.4°

Digitized Sky Survey image of φ Tauri

The image below is a photograph of φ 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 φ Tauri is -0.025 arcsec per year in Right Ascension and -0.08 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of φ Tauri (phi Tauri) star
DSS2 image of φ Tauri. The red arrow shows the motion of φ Tauri during the next 10000 years (-4.17 arcmin in Right Ascension and -13.33 arcmin in declination);

Distance of φ Tauri from the Sun and relative movement

φ Tauri is distant 342.08 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

104.93 pc
342.08 ly
3 km/s
-0.025 arcsec/year
-0.08 arcsec/year

Spectral properties of φ Tauri

φ Tauri belongs to spectral class K1 and has a luminosity class of III corresponding to a giant star.


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

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

φ Tauri star system properties

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

50 arcsec

Alternative designations of φ Tauri

φ Tauri
(phi Tauri)