δ Tucanae (delta Tucanae)

Below the horizon. Never rises today

Alt: -43.81° Az: 143.97° Direction: South-West

δ Tucanae is a variable and double main-sequence star of spectral class B9 in the constellation of Tucana.

δ Tucanae visual magnitude is 4.48. Because of its moderate brightness, δ Tucanae is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

DSS2 image of δ Tucanae. The red arrow shows the motion of δ Tucanae during the next 10000 years (11.83 arcmin in Right Ascension and 0.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 22h 29m 06s

Declination -64° 50’ 08”

Hour Angle 18h 13m 45s

Sidereal Time 16h 42m 52s

J2000

Right Ascension 22h 27m 20s

Declination -64° 57’ 59”

Galactic Coordinates

Galactic Longitude 323.87°

Galactic Latitude -45.87°

Finder Chart

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Finder chart for δ Tucanae (delta Tucanae).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.48

Class Main-sequence

Absolute magnitude -0.09

Spectral Type B9V

Color Index (B-V) -0.03

Temperature 10516K

The red dot in the diagram below shows where δ Tucanae is situated in the Hertzsprung–Russell diagram.

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

Star System Properties

δ Tucanae 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 δ Tucanae double sysyem:

Main star magnitude 4.48

Secondary star magnitude 8.98

Magnitude difference 4.5

Separation 6.9 arcsec

Distance, Radial Speed, Proper Motion

δ Tucanae is distant 266.99 light years from the Sun and it is moving far from the Sun at the speed of 12 kilometers per second.

Distance (parsec) 81.90

Distance (light year) 266.99

Radial Speed 12 km/s

Proper Motion RA 0.071 arcsec/y

Proper Motion Dec 0.003"/y

Alternative Designations

Bayer designation δ Tucanae
(delta Tucanae)

Henry Draper Catalogue HD212581

SAO Catalogue SAO255222

Hipparcos Catalogue HIP110838

Durchmusterung Catalogue CP-65 4044

General Catalogue of Variable Stars 14158

Visibility from Your Location

δ Tucanae (delta Tucanae) is currently not visible from Greenwich, UK

Set Location

Other stars in Tucana