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Star profile

Iota Horologium

3D likeness based on its real data · class G · ~5,500 K

What is Iota Horologium

Iota Horologii is a yellow G-type star much like the Sun, lying only 56 light-years away in the small southern constellation of the Clock. Its astronomical importance is real: it hosts at least one confirmed gas-giant planet, discovered in 1999 by radial velocities, in an orbit of just over 300 days. It also belongs to the Hyades stellar stream, a kinematic current linked to the open cluster that adorns Taurus.

Where it is and when to see it

Iota Horologium lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is October: the Sun sits at the opposite point of the sky and the star culminates around midnight. How high it climbs above the horizon depends on the latitude you watch from.

Find it on the sky map

It opens in your browser. Free, no account, nothing to install.

The signature wall

Stelvia's sky works like a signature wall: anyone can leave their name and a message on a real star, and that signature goes up on the map for everyone to read. Signing is free.

A signature without a lock can be replaced by someone else's. The lock makes the signature permanent and lets you choose a symbolic name for the star, always shown next to the star's catalogue identifier. How the lock works

If you don't have an account yet, we'll ask for an email to confirm it's you: we send you a link and that's it, no password.

A public signature from a real person. The chosen name is a symbolic denomination within Stelvia, with no official standing or IAU recognition: the sky is not for sale and belongs to no one.

Astronomical data for Iota Horologium

Constellation
Horologium
Apparent magnitude
5.40
Distance
56.0 light years
Coordinates (J2000)
RA 40.639° · Dec -50.800°
Catalogue
HIP 12653 · HD 17051

A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.

Other stars in Horologium

Horologium has 18 stars in Stelvia's catalogue. Here are a few of them.

See all 18 stars in Horologium