λ Tauri (lambda Tauri)

λ Tauri is a variable main-sequence star in the constellation of Taurus.

λ Tauri visual magnitude is 3.47. Because of its moderate brightness, λ 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 λ Tauri:

Color of λ Tauri ⬤

Magnitude of λ Tauri 3.47

Class Main-sequence

VISIBILITY RIGHT NOW λ Tauri (lambda Tauri) is above the horizon from Greenwich, United Kingdom [change]. Altitude: 17°.

Celestial coordinates and finder chart of λ Tauri

λ 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 λ Tauri are provided in the following table:

Right Ascension J2000 04h 00m 40s

Declination J2000 +12° 29’ 25”

Galactic Longitude 178.37°

Galactic Latitude -29.38°

Constellation Taurus

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

Finder chart λ Tauri (lambda Tauri) star

Simplified finder chart for λ Tauri (lambda Tauri).

Visibility of λ Tauri from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's λ Tauri (lambda Tauri) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 77.5° RISE 9:39

Max altitude: 51.0° TRANSIT 16:41

Azimuth: 282.5° SET 23:43

RIGHT NOW λ Tauri (lambda Tauri) is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of λ Tauri

The image below is a photograph of λ 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 λ Tauri is -0.006 arcsec per year in Right Ascension and -0.012 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of λ Tauri. The red arrow shows the motion of λ Tauri during the next 10000 years (-1.00 arcmin in Right Ascension and -2.00 arcmin in declination);

Distance of λ Tauri from the Sun and relative movement

λ Tauri is distant 370.03 light years from the Sun and it is moving far from the Sun at the speed of 18 kilometers per second.

Distance (parsec) 113.51 pc

Distance (light year) 370.03 ly

Heliocentric radial velocity 18 km/s

Proper Motion RA -0.006 arcsec/year

Proper Motion Dec -0.012 arcsec/year

Spectral properties of λ Tauri

λ Tauri belongs to spectral class B3 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude -1.81

Spectral Type B3V

Color Index (B-V) -0.12

Temperature of λ Tauri 11920K

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

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

Alternative designations of λ Tauri

Bayer designation λ Tauri
(lambda Tauri)

Flamsteed designation 35 Tauri

Henry Draper Catalogue HD25204

SAO Catalogue SAO93719

Hipparcos Catalogue HIP18724

Durchmusterung Catalogue BD+12 539

FK5 Catalogue 150

General Catalogue of Variable Stars Lam Tau

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