TOI-1749

Planetary system · 324.7 light-years away

TOI-1749 is 325 light-years from the Sun. The NASA Exoplanet Archive lists 3 planets around this M0 V star; the first was found in 2021 by transit (Transiting Exoplanet Survey Satellite (TESS)).

Fly there in 3D

Worth knowing

TOI-1749 b goes round its star every 2.39 days, 37 times as often as Mercury goes round the Sun.

The star

Spectral typeM0 V
Surface temperature3,985 K
Mass0.58 solar masses
Radius0.55 solar radii
Luminosity0.06974 times the Sun
Apparent magnitude13.86
Ageabout 0.8 billion years
Distance from the Sun324.7 light-years (99.6 parsecs)
Position (J2000)RA 282.7372°, Dec 64.4195°
ConstellationDraco

Planets (3)

PlanetYearOrbitRadiusMassFound
TOI-1749 b2.39 days0.0291 AU1.39 R⊕57 M⊕Transit, 2021
TOI-1749 c4.49 days0.0443 AU2.12 R⊕14 M⊕Transit, 2021
TOI-1749 d9.05 days0.0707 AU2.52 R⊕15 M⊕Transit, 2021

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 3,985 K, 0.070 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.27 to 0.51 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 325 years ago, around 1700.

Nearest systems to it

Also found by Transiting Exoplanet Survey Satellite (TESS)

Sources

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