90 Tauri

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:

Color of 90 Tauri ⬤

Magnitude of 90 Tauri 4.27

Class Main-sequence

VISIBILITY RIGHT NOW 90 Tauri is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 0°.

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:

Right Ascension J2000 04h 38m 09s

Declination J2000 +12° 30’ 38”

Galactic Longitude 184.74°

Galactic Latitude -22.24°

Constellation Taurus

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

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° RISE 5:56

Max altitude: 51.0° TRANSIT 12:59

Azimuth: 282.5° SET 20:01

RIGHT NOW 90 Tauri is above the horizon from Greenwich, United Kingdom

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.

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.

Distance (parsec) 45.89 pc

Distance (light year) 149.61 ly

Heliocentric radial velocity 45 km/s

Proper Motion RA 0.103 arcsec/year

Proper Motion Dec -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.

Absolute magnitude 0.96

Spectral Type A6V

Color Index (B-V) 0.12

Temperature of 90 Tauri 8839K

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

Main star magnitude 4.27

Secondary star magnitude 9.97

Magnitude difference 5.7

Separation 119.8 arcsec

Alternative designations of 90 Tauri

Flamsteed designation 90 Tauri

Henry Draper Catalogue HD29388

SAO Catalogue SAO94044

Hipparcos Catalogue HIP21589

Durchmusterung Catalogue BD+12 618

FK5 Catalogue 2342

In Evidence

Other stars in Taurus