TOI-1199

Planetary system · 810.3 light-years away · also TYC 4146-244-1

TOI-1199 is 810 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this 5,710 K star; the first was found in 2024 by transit (Transiting Exoplanet Survey Satellite (TESS)).

Fly there in 3D

Worth knowing

TOI-1199 b goes round its star every 3.67 days, 24 times as often as Mercury goes round the Sun.

The star

Surface temperature5,710 K
Mass1.23 solar masses
Radius1.45 solar radii
Luminosity2.015 times the Sun
Apparent magnitude11.093
Ageabout 4.2 billion years
Distance from the Sun810.3 light-years (248.4 parsecs)
Position (J2000)RA 166.8807°, Dec 61.3526°
ConstellationUrsa Major

Planets (1)

PlanetYearOrbitRadiusMassFound
TOI-1199 b3.67 days0.0499 AU10.514 R⊕75.961 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.

Sources

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