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: 6:55  
clear_day Transit: 12:49  
SunsetSet: 18:41 south
sunny DaytimeWhat's Visible Now
All Constellations » Taurus » 

104 Tauri

Altitude: -16.4°   Azimuth: 334.9°   Direction: North-North-West

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

104 Tauri visual magnitude is 5. Because of its moderate brightness, 104 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 104 Tauri:


104 Tauri is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -16.4°
Azimuth: 334.9°
Direction: North-North-West

Celestial coordinates and finder chart of 104 Tauri

104 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 104 Tauri are provided in the following table:

05h 07m 27s
+18° 38’ 41”

The simplified sky map below shows the position of 104 Tauri in the sky:

Finder chart 104 Tauri star
Simplified finder chart for 104 Tauri.

Visibility of 104 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 104 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: 71.4°
Max altitude: 57.2°
Azimuth: 288.6°

Digitized Sky Survey image of 104 Tauri

The image below is a photograph of 104 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 104 Tauri is 0.537 arcsec per year in Right Ascension and 0.016 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of 104 Tauri star
DSS2 image of 104 Tauri. The red arrow shows the motion of 104 Tauri during the next 1000 years (8.95 arcmin in Right Ascension and 0.27 arcmin in declination);

Distance of 104 Tauri from the Sun and relative movement

104 Tauri is distant 51.73 light years from the Sun and it is moving far from the Sun at the speed of 20 kilometers per second.

15.87 pc
51.73 ly
20 km/s
0.537 arcsec/year
0.016 arcsec/year

Spectral properties of 104 Tauri

104 Tauri belongs to spectral class G4 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where 104 Tauri is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 104 Tauri. Attribution: Richard Powell / CC BY-SA

104 Tauri star system properties

104 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 104 Tauri double sysyem:

0.1 arcsec

Alternative designations of 104 Tauri

Gl 188 A