TOI-1799

Planetary system · 202.6 light-years away · also HIP 54491

TOI-1799 is 203 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this 5,690 K star; the first was found in 2024 by transit (Transiting Exoplanet Survey Satellite (TESS)).

Fly there in 3D

Worth knowing

TOI-1799 b goes round its star every 7.09 days, 12 times as often as Mercury goes round the Sun.

The star

Surface temperature5,690 K
Mass1.01 solar masses
Radius0.957 solar radii
Luminosity0.867 times the Sun
Apparent magnitude8.98
Ageabout 5.1 billion years
Distance from the Sun202.6 light-years (62.1 parsecs)
Position (J2000)RA 167.2329°, Dec 34.3030°
ConstellationUrsa Major

Planets (1)

PlanetYearOrbitRadiusMassFound
TOI-1799 b7.09 days0.0725 AU1.642 R⊕4 M⊕Transit, 2024

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.

The planets, compared

For a star of 5,690 K, 0.87 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.89 to 1.57 AU. None of its known planets orbits inside it. The zone says how much starlight arrives, not whether a planet has water or air. The edges follow Kopparapu et al. (2014), as the 3D view draws them.

The light you see left 203 years ago, around 1820.

Nearest systems to it

Also found by Transiting Exoplanet Survey Satellite (TESS)

Sources

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