The TOI-700 system contains 3 exoplanets. It is located 101.52 light years away from the solar system.
| Mass | 0.42 solar masses |
| Radius | 0.42 solar radiae |
| Temperature | 3461 kelvin |
| Stellar Metallicity | -0.07 decimal exponent |
| Age | 1.5 billion years |
At less than 1.5 Earth masses, TOI-700 b is a terrestrial planet, much like the terrestrial planets we find in our solar system, namely Mercury, Venus, Earth and Mars.
| Mass | 1.110 Earth masses |
| Density | 5.470 grams per cubic centimeter |
| Radius | 1.037 Earth radiae |
| Semi-major Axis | 0.0677 AU |
| Eccentricity | 0.081 |
| Orbital Period | 9.977 days |
| Discovery Method | Transit |
| Discovery Facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery Telescope | 0.1 m TESS Telescope |
| Discovery Instrument | TESS CCD Array |
| Discovery Date | 2020-09 |
| Reference | Gilbert et al. 2020 |
At more than 10 Earth masses, TOI-700 c is an ice giant, a planet that is made up mostly of volatiles like water, amonia and methane, and enveloped by a dense hydrogen and helium atmosphere, much like Uranus and Neptune.
| Mass | 7.510 Earth masses |
| Density | 2.220 grams per cubic centimeter |
| Radius | 2.650 Earth radiae |
| Semi-major Axis | 0.0929 AU |
| Eccentricity | 0.078 |
| Orbital Period | 16.051 days |
| Discovery Method | Transit |
| Discovery Facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery Telescope | 0.1 m TESS Telescope |
| Discovery Instrument | TESS CCD Array |
| Discovery Date | 2020-09 |
| Reference | Gilbert et al. 2020 |
At 1.574 Earth masses, TOI-700 d is a so called Super Earth. Super Earths could be terrestrial worlds like Earth, but they could also be ocean worlds or terrestrial worlds wrapped in a substantial atmosphere, in which case some refer to them as Mini Neptunes. TOI-700 d orbits within the habitable zone of its parent star and could, potentially, be a habitable planet with stable bodies of liquid water on its surface, like Earth.
| Mass | 1.570 Earth masses |
| Density | 5.760 grams per cubic centimeter |
| Radius | 1.144 Earth radiae |
| Semi-major Axis | 0.1633 AU |
| Eccentricity | 0.111 |
| Orbital Period | 37.425 days |
| Discovery Method | Transit |
| Discovery Facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery Telescope | 0.1 m TESS Telescope |
| Discovery Instrument | TESS CCD Array |
| Discovery Date | 2020-09 |
| Reference | Gilbert et al. 2020 |