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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:44  
clear_day Transit: 12:10  
SunsetSet: 17:38
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All Constellations » Tucana » 

η Tucanae (eta Tucanae)

Altitude: -62.3°   Azimuth: 224.0°   Direction: South-West

η Tucanae is a main-sequence star in the constellation of Tucana.

η Tucanae visual magnitude is 5. Because of its moderate brightness, η Tucanae should be easily visible from locations with dark skies, while it can be barely visible, or not visible at all, from skies affected by light pollution.

The proper motion of η Tucanae is 0.086 arcsec per year in Right Ascension and -0.068 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of η Tucanae (eta Tucanae) star
DSS2 image of η Tucanae. The red arrow shows the motion of η Tucanae during the next 10000 years (14.33 arcmin in Right Ascension and -11.33 arcmin in declination);

Key facts about η Tucanae


η Tucanae (eta Tucanae) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -62.3°
Azimuth: 224.0°
Direction: South-West

Celestial coordinates and finder chart of η Tucanae

η 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 η Tucanae are provided in the following table:

23h 57m 35s
-64° 17’ 53”

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

Finder chart η Tucanae (eta Tucanae) star
Simplified finder chart for η Tucanae (eta Tucanae).

Visibility of η Tucanae from your location

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

η Tucanae (eta Tucanae) is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of η Tucanae from the Sun and relative movement

η Tucanae is distant 158.79 light years from the Sun and it is moving far from the Sun at the speed of 33 kilometers per second.

48.71 pc
158.79 ly
33 km/s
0.086 arcsec/year
-0.068 arcsec/year

Spectral properties of η Tucanae

η Tucanae belongs to spectral class A1 and has a luminosity class of V corresponding to a main-sequence star.


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

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

Alternative designations of η Tucanae

η Tucanae
(eta Tucanae)