Star profile

Theta Ceti

3D likeness based on its real data · class K · ~4,200 K

What is Theta Ceti

Theta Ceti is a Horizontal Branch orange giant: a star that has already passed through the red giant phase and now lives in chemical calm, fusing helium at its core. About a billion years old, it shines with the light of fifty-seven Suns and its radius has swollen to nearly twelve times solar. It belongs to Cetus, the sea monster Perseus slew to rescue Andromeda.

Where it is and when to see it

Theta Ceti 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

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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.

Write my signature

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 Theta Ceti

Constellation: Cetus
Apparent magnitude: 3.60
Distance: 113.8 light years
Coordinates (J2000): RA 21.006° · Dec -8.183°
Catalogue: HIP 6537 · HD 8512

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

Other stars in Cetus

Cetus has 111 stars in Stelvia's catalogue. Here are a few of them.

See all 111 stars in Cetus