HD 221416 is 312 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this K0 IV/V star; the first was found in 2019 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DHD 221416 b goes round its star every 14.3 days, 6 times as often as Mercury goes round the Sun.
| Spectral type | K0 IV/V |
| Surface temperature | 5,080 K |
| Mass | 1.212 solar masses |
| Radius | 2.943 solar radii |
| Luminosity | 5.15 times the Sun |
| Apparent magnitude | 8.15 |
| Age | about 4.9 billion years |
| Distance from the Sun | 311.6 light-years (95.5 parsecs) |
| Position (J2000) | RA 353.0332°, Dec -21.8012° |
| Constellation | Aquarius |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| HD 221416 b | 14.3 days | 0.123 AU | 9.17 R⊕ | 60.5 M⊕ | Transit, 2019 |
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.
For a star of 5,080 K, 5.2 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 2.24 to 4.05 AU. None of its known planets orbits inside it. The zone says how much starlight arrives, not whether a planet has water or air. The edges follow Kopparapu et al. (2014), as the 3D view draws them.
The light you see left 312 years ago, around 1710.