Your guide to the Solar System and the night sky
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🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 6:03  ☀️ Transit: 12:06  🌅 Sunset: 18:09

ι Telescopii (iota Telescopii)

ι Telescopii is a hypergiant star in the constellation of Telescopium.

ι Telescopii visual magnitude is 4.9. Because of its moderate brightness, ι Telescopii 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 ι Telescopii:

ι Telescopii (iota Telescopii) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of ι Telescopii

ι Telescopii 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 ι Telescopii are provided in the following table:

19h 35m 12s
-48° 05’ 57”

The simplified sky map below shows the position of ι Telescopii in the sky:

Finder chart ι Telescopii (iota Telescopii) star
Simplified finder chart for ι Telescopii (iota Telescopii).

Visibility of ι Telescopii from your location

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

ι Telescopii (iota Telescopii) is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of ι Telescopii

The image below is a photograph of ι Telescopii 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 ι Telescopii is -0.009 arcsec per year in Right Ascension and -0.038 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of ι Telescopii (iota Telescopii) star
DSS2 image of ι Telescopii. The red arrow shows the motion of ι Telescopii during the next 10000 years (-1.50 arcmin in Right Ascension and -6.33 arcmin in declination);

Distance of ι Telescopii from the Sun and relative movement

ι Telescopii is distant 398.05 light years from the Sun and it is moving far from the Sun at the speed of 22 kilometers per second.

122.10 pc
398.05 ly
22 km/s
-0.009 arcsec/year
-0.038 arcsec/year

Spectral properties of ι Telescopii

ι Telescopii belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where ι Telescopii is situated in the Hertzsprung–Russell diagram.

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

Alternative designations of ι Telescopii

ι Telescopii
(iota Telescopii)