TOI-561 is 280 light-years from the Sun. The NASA Exoplanet Archive lists 4 planets around this G9 V star; the first was found in 2020 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DTOI-561 b goes round its star every 10.7 hours, 197 times as often as Mercury goes round the Sun.
| Spectral type | G9 V |
| Surface temperature | 5,342 K |
| Mass | 0.806 solar masses |
| Radius | 0.843 solar radii |
| Luminosity | 0.522 times the Sun |
| Apparent magnitude | 10.252 |
| Age | about 16.1 billion years |
| Distance from the Sun | 279.8 light-years (85.8 parsecs) |
| Position (J2000) | RA 148.1852°, Dec 6.2161° |
| Constellation | Sextans |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| TOI-561 b | 10.7 hours | 0.0106 AU | 1.397 R⊕ | 2.02 M⊕ | Transit, 2020 |
| TOI-561 c | 10.8 days | 0.0889 AU | 2.865 R⊕ | 5.93 M⊕ | Transit, 2020 |
| TOI-561 d disputed | 25.7 days | 0.159 AU | 2.615 R⊕ | 13.33 M⊕ | Transit, 2020 |
| TOI-561 e disputed | 77.1 days | 0.330 AU | 2.517 R⊕ | 12.4 M⊕ | Transit, 2020 |
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.