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🌎  Greenwich, United Kingdom [change]

η Scorpii (eta Scorpii)

η Scorpii is a giant star in the constellation of Scorpius.

η Scorpii visual magnitude is 3.33. Because of its moderate brightness, η Scorpii should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about η Scorpii:

3.33
Giant
η Scorpii (eta Scorpii) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of η Scorpii

η Scorpii 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 η Scorpii are provided in the following table:

17h 12m 09s
-43° 14’ 21”
344.37°
-2.3°
Scorpius

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

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

Visibility of η Scorpii from your location

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

η Scorpii (eta Scorpii) is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of η Scorpii

The image below is a photograph of η Scorpii 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 Scorpii is 0.024 arcsec per year in Right Ascension and -0.287 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of η Scorpii (eta Scorpii) star
DSS2 image of η Scorpii. The red arrow shows the motion of η Scorpii during the next 1000 years (0.40 arcmin in Right Ascension and -4.78 arcmin in declination);

Distance of η Scorpii from the Sun and relative movement

η Scorpii is distant 71.55 light years from the Sun and it is moving towards the Sun at the speed of 28 kilometers per second.

21.95 pc
71.55 ly
-28 km/s
0.024 arcsec/year
-0.287 arcsec/year

Spectral properties of η Scorpii

η Scorpii belongs to spectral class F3 and has a luminosity class of III corresponding to a giant star.

1.62
F3III
6827K

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

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

Alternative designations of η Scorpii

η Scorpii
(eta Scorpii)
SAO227707
SAO227707