Map of the Universe
Tau Ceti
Star · Single yellow-hued star in the constellation Cetus
About Tau Ceti
Tau Ceti is about 11.91 light-years from the Sun, so the light we see from it left about 11.91 years ago.
At apparent magnitude 3.49 it can be seen with the naked eye from a dark site.
It gives out 0.466 times as much light as the Sun.
It has 3 known planets.
The map lists it as a star and shows it among the stars around the Sun, drawn on the plane of the Milky Way.
Key numbers
| Distance | 11.91 light-years (3.65 pc) |
|---|---|
| Spectral type | G8V |
| Apparent magnitude | 3.49 |
| Absolute magnitude | 5.68 |
| Luminosity | 0.466 × the Sun |
| Constellation | Cet |
| Known planets | 3 |
Planets: NASA Exoplanet Archive (Planetary Systems Composite Parameters).
Known planets
| Planet | Mass (Earth = 1) | Radius (Earth = 1) | Orbit (days) | Found |
|---|---|---|---|---|
| tau Cet g | 1.75 | 1.18 | 20 | 2017, radial velocity |
| tau Cet h | 1.83 | 1.19 | 49.41 | 2017, radial velocity |
| tau Cet f | 3.93 | 1.81 | 636.13 | 2017, radial velocity |
Where it is
Its place in the universe, from the inside out: Solar neighbourhood › Local Bubble › Orion–Cygnus Arm (Local Arm) › Milky Way › Local Group › Virgo Supercluster › Laniakea Supercluster › Observable universe.
Zoom out to see it in context: Nearest stars, a view about 24 light-years across.
From Wikipedia
Tau Ceti is a single star in the constellation Cetus. Its name is a Bayer designation. Spectrally, this star is similar to the Sun, although it has only about 78% of the Sun's mass. At a distance of just under 12 light-years from the Solar System, it is a relatively nearby star and the closest solitary G-type star.
Excerpt from the Wikipedia article Tau Ceti, licensed CC BY-SA 4.0.
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