YZ Cet is 12.1 light-years from the Sun. The NASA Exoplanet Archive lists 3 planets around this M4.5 V star; the first was found in 2017 by radial velocity (La Silla Observatory).
Fly there in 3DYZ Cet b goes round its star every 2.02 days, 44 times as often as Mercury goes round the Sun.
| Spectral type | M4.5 V |
| Surface temperature | 3,151 K |
| Mass | 0.142 solar masses |
| Radius | 0.157 solar radii |
| Luminosity | 0.002195 times the Sun |
| Apparent magnitude | 12.074 |
| Age | about 3.8 billion years |
| Distance from the Sun | 12.1 light-years (3.7 parsecs) |
| Position (J2000) | RA 18.1331°, Dec -16.9962° |
| Constellation | Cetus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| YZ Cet b | 2.02 days | 0.0163 AU | 0.913 R⊕ estimated | 0.7 M⊕ minimum | Radial Velocity, 2017 |
| YZ Cet c | 3.06 days | 0.0216 AU | 1.05 R⊕ estimated | 1.14 M⊕ minimum | Radial Velocity, 2017 |
| YZ Cet d | 4.66 days | 0.0285 AU | 1.03 R⊕ estimated | 1.09 M⊕ minimum | Radial Velocity, 2017 |
Values are the NASA Exoplanet Archive’s composite parameters. A radius marked estimated comes from a mass–radius relation; a mass marked minimum is M sin i. Planet sizes and colours in the 3D view are renderings: none of these worlds has been photographed as more than a point of light.