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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:46  
clear_day Transit: 12:11  
SunsetSet: 17:36
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All Constellations » Tucana » 

θ Tucanae (theta Tucanae)

Altitude: -39.2°   Azimuth: 200.3°   Direction: South-South-West

θ Tucanae is a variable sub-giant star in the constellation of Tucana.

θ Tucanae visual magnitude is 6.13. Because of its reltive faintness, θ Tucanae should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of θ Tucanae is 0.067 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.

Image of θ Tucanae (theta Tucanae) star
DSS2 image of θ Tucanae. The red arrow shows the motion of θ Tucanae during the next 10000 years (11.17 arcmin in Right Ascension and -2.00 arcmin in declination);

Key facts about θ Tucanae


θ Tucanae (theta Tucanae) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -39.2°
Azimuth: 200.3°
Direction: South-South-West

Celestial coordinates and finder chart of θ Tucanae

θ Tucanae is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of θ Tucanae are provided in the following table:

00h 33m 23s
-71° 15’ 57”

The simplified sky map below shows the position of θ Tucanae in the sky:

Finder chart θ Tucanae (theta Tucanae) star
Simplified finder chart for θ Tucanae (theta Tucanae).

Visibility of θ Tucanae from your location

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

θ Tucanae (theta Tucanae) is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of θ Tucanae from the Sun and relative movement

θ Tucanae is distant 490.23 light years from the Sun and it is moving far from the Sun at the speed of 2 kilometers per second.

150.38 pc
490.23 ly
2 km/s
0.067 arcsec/year
-0.012 arcsec/year

Spectral properties of θ Tucanae

θ Tucanae belongs to spectral class A7 and has a luminosity class of IV corresponding to a sub-giant star.


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

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

Alternative designations of θ Tucanae

θ Tucanae
(theta Tucanae)