TOI-700 d
TOI-700 d is a near-Earth-sized exoplanet, likely rocky, orbiting within the habitable zone of the red dwarf TOI-700, the outermost planet within the system. It is located roughly 101.4 light-years (31.1 pc) away from Earth in the constellation of Dorado. The exoplanet is the first Earth-sized exoplanet in the habitable zone discovered by the Transiting Exoplanet Survey Satellite (TESS).
An artist's impression of TOI-700 d, depicted here as a possible ocean planet. The actual appearance of the planet is not currently known. | |
| Discovery | |
|---|---|
| Discovered by | Emily Gilbert |
| Discovery date | 3 January 2020 |
| Transit | |
| Orbital characteristics | |
| 0.1633±0.0027 AU | |
| Eccentricity | 0.042+0.045 −0.030 |
| 37.42396+0.00039 −0.00035 d | |
| Inclination | 89.80°+0.12° −0.10° |
| 10°+120° −140° | |
| Star | TOI-700 |
| Physical characteristics | |
Mean radius | 1.073+0.059 −0.054 R🜨 |
| Mass | ≙1.72+1.29 −0.63 ME |
| Temperature | Teq: 268.8 K (−4.3 °C; 24.2 °F) |
TOI-700 d orbits its star at a distance of 0.163 AU (24,400,000 km; 15,200,000 mi) from its host star with an orbital period of roughly 37.4 days and has a radius of around 1.19 times that of Earth. It has been estimated that the planet receives about 86% the energy that the Earth receives from the Sun.
It was discovered in early January 2020 by the Transiting Exoplanet Survey Satellite (TESS).