TOI-1634 is 115 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this M2 star; the first was found in 2021 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DTOI-1634 b goes round its star every 23.7 hours, 89 times as often as Mercury goes round the Sun.
TOI-1634 is one of 2 stars in its system: the other is drawn where the Washington Double Star Catalog measures it on the sky.
Where the archive gives only a period or only an orbit size, the other is worked out from Kepler’s third law with the star’s mass.
| Spectral type | M2 |
| Surface temperature | 3,550 K |
| Mass | 0.502 solar masses |
| Radius | 0.45 solar radii |
| Luminosity | 0.0289 times the Sun |
| Apparent magnitude | 13.217 |
| Distance from the Sun | 115.0 light-years (35.3 parsecs) |
| Position (J2000) | RA 56.3906°, Dec 37.1123° |
| Constellation | Perseus |
TOI-1634 A has no spectral type listed of magnitude 15.6, moving through space with it. In 2021 it was 2.5″ from TOI-1634, at position angle 271° (Washington Double Star Catalog, 03456+3707 TOI1634): 88.2 AU on the sky at this distance. The true distance can only be larger. Its colour is estimated from its brightness.
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| TOI-1634 b | 23.7 hours | 0.0154 AU | 1.759 R⊕ | 4.9 M⊕ | Transit, 2021 |
| TOI-1634 c | 103.0 days | 0.342 AU from Kepler’s law | — | — | Radial Velocity, 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.