TOI-199

Planetary system · 333.6 light-years away

TOI-199 is 334 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this G9 V star; the first was found in 2023 by transit (Transiting Exoplanet Survey Satellite (TESS)).

Fly there in 3D

Worth knowing

TOI-199 c takes 273.7 days to go round its star once.

The star

Spectral typeG9 V
Surface temperature5,255 K
Mass0.936 solar masses
Radius0.82 solar radii
Luminosity0.459 times the Sun
Apparent magnitude10.701
Ageabout 0.8 billion years
Distance from the Sun333.6 light-years (102.3 parsecs)
Position (J2000)RA 80.1059°, Dec -59.8954°
ConstellationDorado

Planets (2)

PlanetYearOrbitRadiusMassFound
TOI-199 b104.9 days0.425 AU9.0793 R⊕54.031 M⊕Transit, 2023
TOI-199 c273.7 days0.807 AU11.4 R⊕ estimated88.992 M⊕Transit Timing Variations, 2023

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.

Sources

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