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🌎  Greenwich, United Kingdom [change]

η1 Trianguli Australis (eta1 Trianguli Australis)

η1 Trianguli Australis is a sub-giant star in the constellation of Triangulum Australe.

η1 Trianguli Australis visual magnitude is 5.91. Because of its reltive faintness, η1 Trianguli Australis should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about η1 Trianguli Australis:

5.91
Sub-giant
η1 Trianguli Australis (eta1 Trianguli Australis) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of η1 Trianguli Australis

η1 Trianguli Australis is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of η1 Trianguli Australis are provided in the following table:

16h 41m 23s
-68° 17’ 45”
321.7°
-14.29°
Triangulum Australe

The simplified sky map below shows the position of η1 Trianguli Australis in the sky:

Finder chart η1 Trianguli Australis (eta1 Trianguli Australis) star
Simplified finder chart for η1 Trianguli Australis (eta1 Trianguli Australis).

Visibility of η1 Trianguli Australis from your location

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

η1 Trianguli Australis (eta1 Trianguli Australis) is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of η1 Trianguli Australis

The image below is a photograph of η1 Trianguli Australis 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 η1 Trianguli Australis is -0.006 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 η1 Trianguli Australis (eta1 Trianguli Australis) star
DSS2 image of η1 Trianguli Australis. The red arrow shows the motion of η1 Trianguli Australis during the next 10000 years (-1.00 arcmin in Right Ascension and -2.00 arcmin in declination);

Distance of η1 Trianguli Australis from the Sun and relative movement

η1 Trianguli Australis is distant 687.76 light years from the Sun and it is moving towards the Sun at the speed of 43 kilometers per second.

210.97 pc
687.76 ly
-43 km/s
-0.006 arcsec/year
-0.012 arcsec/year

Spectral properties of η1 Trianguli Australis

η1 Trianguli Australis belongs to spectral class B7 and has a luminosity class of IV corresponding to a sub-giant star.

-0.71
B7IV
11247K

The red dot in the diagram below shows where η1 Trianguli Australis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of η1 Trianguli Australis. Attribution: Richard Powell / CC BY-SA

Alternative designations of η1 Trianguli Australis

η1 Trianguli Australis
(eta1 Trianguli Australis)
SAO253649
SAO253649