δ3 Tauri (delta3 Tauri)

δ3 Tauri is a variable and multiple sub-giant star in the constellation of Taurus.

δ3 Tauri visual magnitude is 4.29. Because of its moderate brightness, δ3 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 δ3 Tauri:

Color of δ3 Tauri ⬤

Magnitude of δ3 Tauri 4.29

Class Sub-giant

VISIBILITY RIGHT NOW δ3 Tauri (delta3 Tauri) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of δ3 Tauri

δ3 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 δ3 Tauri are provided in the following table:

Right Ascension J2000 04h 25m 29s

Declination J2000 +17° 55’ 41”

Galactic Longitude 178.12°

Galactic Latitude -21.3°

Constellation Taurus

The simplified sky map below shows the position of δ3 Tauri in the sky:

Finder chart δ3 Tauri (delta3 Tauri) star

Simplified finder chart for δ3 Tauri (delta3 Tauri).

Visibility of δ3 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 δ3 Tauri (delta3 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: 72.1° RISE 5:17

Max altitude: 56.4° TRANSIT 12:50

Azimuth: 287.9° SET 20:24

RIGHT NOW δ3 Tauri (delta3 Tauri) is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of δ3 Tauri

The image below is a photograph of δ3 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 δ3 Tauri is 0.108 arcsec per year in Right Ascension and -0.028 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of δ3 Tauri. The red arrow shows the motion of δ3 Tauri during the next 1000 years (1.80 arcmin in Right Ascension and -0.47 arcmin in declination);

Distance of δ3 Tauri from the Sun and relative movement

δ3 Tauri is distant 147.85 light years from the Sun and it is moving far from the Sun at the speed of 35 kilometers per second.

Distance (parsec) 45.35 pc

Distance (light year) 147.85 ly

Heliocentric radial velocity 35 km/s

Proper Motion RA 0.108 arcsec/year

Proper Motion Dec -0.028 arcsec/year

Spectral properties of δ3 Tauri

δ3 Tauri belongs to spectral class A2 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude 1.01

Spectral Type A2IV

Color Index (B-V) 0.05

Temperature of δ3 Tauri 9542K

The red dot in the diagram below shows where δ3 Tauri is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of δ3 Tauri. Attribution: Richard Powell / CC BY-SA

δ3 Tauri star system properties

δ3 Tauri is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the δ3 Tauri double sysyem:

Main star magnitude 4.29

Secondary star magnitude 7.99

Magnitude difference 3.7

Separation 1.5 arcsec

Alternative designations of δ3 Tauri

Bayer designation δ3 Tauri
(delta3 Tauri)

Flamsteed designation 68 Tauri

Henry Draper Catalogue HD27962

SAO Catalogue SAO93923

Hipparcos Catalogue HIP20648

Durchmusterung Catalogue BD+17 719

General Catalogue of Variable Stars V776 Tau

Aitken Double Star Catalogue ADS3206

In Evidence

Other stars in Taurus