TOI-1453 is 257 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this 4,975 K star; the first was found in 2025 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DTOI-1453 b goes round its star every 4.31 days, 20 times as often as Mercury goes round the Sun.
TOI-1453 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.
| Surface temperature | 4,975 K |
| Mass | 0.715 solar masses |
| Radius | 0.72 solar radii |
| Luminosity | 0.2658 times the Sun |
| Apparent magnitude | 11.113 |
| Age | about 12 billion years |
| Distance from the Sun | 256.8 light-years (78.7 parsecs) |
| Position (J2000) | RA 258.2233°, Dec 57.1978° |
| Constellation | Draco |
TOI-1453 B has no spectral type listed of magnitude 15.6, moving through space with it. In 2021 it was 1.9″ from TOI-1453, at position angle 34° (Washington Double Star Catalog, 17129+5712 TOI1453): 150 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-1453 b | 4.31 days | 0.0464 AU from Kepler’s law | 1.173 R⊕ | 2.32 M⊕ | Transit, 2025 |
| TOI-1453 c | 6.59 days | 0.0615 AU from Kepler’s law | 2.224 R⊕ | 2.95 M⊕ | Transit, 2025 |
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.