TOI-1820 is 811 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this 5,734 K star; the first was found in 2022 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DTOI-1820 b goes round its star every 4.86 days, 18 times as often as Mercury goes round the Sun.
| Surface temperature | 5,734 K |
| Mass | 1.04 solar masses |
| Radius | 1.51 solar radii |
| Luminosity | 1.969 times the Sun |
| Apparent magnitude | 10.899 |
| Age | about 11 billion years |
| Distance from the Sun | 810.5 light-years (248.5 parsecs) |
| Position (J2000) | RA 187.6867°, Dec 27.4520° |
| Constellation | Coma Berenices |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| TOI-1820 b | 4.86 days | 0.0610 AU | 12.778 R⊕ | 731.01 M⊕ | Transit, 2022 |
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.