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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: 7:52  
clear_day Transit: 11:51  
SunsetSet: 15:49 south
sunny DaytimeWhat's Visible Now?
All Constellations » Taurus » 

90 Tauri

Altitude: -23.2°   Azimuth: 336.4°   Direction: North-North-West

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

90 Tauri visual magnitude is 4.27. Because of its moderate brightness, 90 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 90 Tauri:


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

Altitude: -23.2°
Azimuth: 336.4°
Direction: North-North-West

Celestial coordinates and finder chart of 90 Tauri

90 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 90 Tauri are provided in the following table:

04h 38m 09s
+12° 30’ 38”

The simplified sky map below shows the position of 90 Tauri in the sky:

Finder chart 90 Tauri star
Simplified finder chart for 90 Tauri.

Visibility of 90 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 90 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: 77.5°
Max altitude: 51.0°
Azimuth: 282.5°

Digitized Sky Survey image of 90 Tauri

The image below is a photograph of 90 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 90 Tauri is 0.103 arcsec per year in Right Ascension and -0.013 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of 90 Tauri star
DSS2 image of 90 Tauri. The red arrow shows the motion of 90 Tauri during the next 1000 years (1.72 arcmin in Right Ascension and -0.22 arcmin in declination);

Distance of 90 Tauri from the Sun and relative movement

90 Tauri is distant 149.61 light years from the Sun and it is moving far from the Sun at the speed of 45 kilometers per second.

45.89 pc
149.61 ly
45 km/s
0.103 arcsec/year
-0.013 arcsec/year

Spectral properties of 90 Tauri

90 Tauri belongs to spectral class A6 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where 90 Tauri is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 90 Tauri. Attribution: Richard Powell / CC BY-SA

90 Tauri star system properties

90 Tauri is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the 90 Tauri double sysyem:

119.8 arcsec

Alternative designations of 90 Tauri