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: 4:51  
clear_day Transit: 12:56  
SunsetSet: 21:00 south
sunny DaytimeWhat's Visible Now
All Constellations » Taurus » 

45 Tauri

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

45 Tauri visual magnitude is 5.72. Because of its reltive faintness, 45 Tauri should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 45 Tauri:

45 Tauri is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 39°.

Celestial coordinates and finder chart of 45 Tauri

45 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 45 Tauri are provided in the following table:

04h 11m 20s
+05° 31’ 23”

The simplified sky map below shows the position of 45 Tauri in the sky:

Finder chart 45 Tauri star
Simplified finder chart for 45 Tauri.

Visibility of 45 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 45 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: 84.5°
Max altitude: 44.0°
Azimuth: 275.5°
45 Tauri is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 45 Tauri

The image below is a photograph of 45 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 45 Tauri is 0.149 arcsec per year in Right Ascension and 0.005 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of 45 Tauri star
DSS2 image of 45 Tauri. The red arrow shows the motion of 45 Tauri during the next 1000 years (2.48 arcmin in Right Ascension and 0.08 arcmin in declination);

Distance of 45 Tauri from the Sun and relative movement

45 Tauri is distant 125.92 light years from the Sun and it is moving far from the Sun at the speed of 37 kilometers per second.

38.62 pc
125.92 ly
37 km/s
0.149 arcsec/year
0.005 arcsec/year

Spectral properties of 45 Tauri

45 Tauri belongs to spectral class F4 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where 45 Tauri is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 45 Tauri. Attribution: Richard Powell / CC BY-SA

45 Tauri star system properties

45 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 45 Tauri double sysyem:

124.1 arcsec

Alternative designations of 45 Tauri