δ2 Tauri (delta2 Tauri)

Altitude: 45.0° Azimuth: 234.8° Direction: South-West

δ2 Tauri is a double main-sequence star in the constellation of Taurus.

δ2 Tauri visual magnitude is 4.8. Because of its moderate brightness, δ2 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 δ2 Tauri:

Color of δ2 Tauri ⬤

Magnitude of δ2 Tauri 4.8

Class Main-sequence

VISIBILITY RIGHT NOW

δ2 Tauri (delta2 Tauri) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 45.0°
Azimuth: 234.8°
Direction: South-West

Celestial coordinates and finder chart of δ2 Tauri

δ2 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 δ2 Tauri are provided in the following table:

Right Ascension J2000 04h 24m 05s

Declination J2000 +17° 26’ 38”

Galactic Longitude 178.29°

Galactic Latitude -21.86°

Constellation Taurus

The simplified sky map below shows the position of δ2 Tauri in the sky:

Finder chart δ2 Tauri (delta2 Tauri) star

Simplified finder chart for δ2 Tauri (delta2 Tauri).

Visibility of δ2 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 δ2 Tauri (delta2 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: 72.6° RISE 4:39

Max altitude: 56.0° TRANSIT 12:09

Azimuth: 287.4° SET 19:40

RIGHT NOW δ2 Tauri (delta2 Tauri) is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of δ2 Tauri

The image below is a photograph of δ2 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 δ2 Tauri is 0.11 arcsec per year in Right Ascension and -0.038 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of δ2 Tauri. The red arrow shows the motion of δ2 Tauri during the next 1000 years (1.83 arcmin in Right Ascension and -0.63 arcmin in declination);

Distance of δ2 Tauri from the Sun and relative movement

δ2 Tauri is distant 145.80 light years from the Sun and it is moving far from the Sun at the speed of 39 kilometers per second.

Distance (parsec) 44.72 pc

Distance (light year) 145.80 ly

Heliocentric radial velocity 39 km/s

Proper Motion RA 0.11 arcsec/year

Proper Motion Dec -0.038 arcsec/year

Spectral properties of δ2 Tauri

δ2 Tauri belongs to spectral class A7 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude 1.55

Spectral Type A7V

Color Index (B-V) 0.15

Temperature of δ2 Tauri 8571K

The red dot in the diagram below shows where δ2 Tauri is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of δ2 Tauri. Attribution: Richard Powell / CC BY-SA

δ2 Tauri star system properties

δ2 Tauri is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the δ2 Tauri double sysyem:

Main star magnitude 4.8

Secondary star magnitude 13.3

Magnitude difference 8.5

Separation 143 arcsec

Alternative designations of δ2 Tauri

Bayer designation δ2 Tauri
(delta2 Tauri)

Flamsteed designation 64 Tauri

Henry Draper Catalogue HD27819

SAO Catalogue SAO93907

Hipparcos Catalogue HIP20542

Durchmusterung Catalogue BD+17 714

In Evidence

Other stars in Taurus