Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:48  
clear_day Transit: 12:56  
SunsetSet: 21:05 south
sunny DaytimeWhat's Visible Now
All Constellations » Antlia » 

η Antliae (eta Antliae)

η Antliae is a double giant star in the constellation of Antlia.

η Antliae visual magnitude is 5.23. Because of its reltive faintness, η Antliae 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 η Antliae:

η Antliae (eta Antliae) is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 2°.

Celestial coordinates and finder chart of η Antliae

η Antliae 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 Antliae are provided in the following table:

09h 58m 52s
-35° 53’ 27”

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

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

Visibility of η Antliae 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 η Antliae (eta Antliae) 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: 125.9°
Max altitude: 2.6°
Azimuth: 234.1°
η Antliae (eta Antliae) is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of η Antliae

The image below is a photograph of η Antliae 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 η Antliae is -0.087 arcsec per year in Right Ascension and -0.02 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of η Antliae (eta Antliae) star
DSS2 image of η Antliae. The red arrow shows the motion of η Antliae during the next 10000 years (-14.50 arcmin in Right Ascension and -3.33 arcmin in declination);

Distance of η Antliae from the Sun and relative movement

η Antliae is distant 106.29 light years from the Sun and it is moving far from the Sun at the speed of 30 kilometers per second.

32.61 pc
106.29 ly
30 km/s
-0.087 arcsec/year
-0.02 arcsec/year

Spectral properties of η Antliae

η Antliae belongs to spectral class F1 and has a luminosity class of III corresponding to a giant star.


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

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

η Antliae star system properties

η Antliae 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 η Antliae double sysyem:

31.1 arcsec

Alternative designations of η Antliae

η Antliae
(eta Antliae)