TOI-2374

Planetary system · 439.2 light-years away

TOI-2374 is 439 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this 5,002 K star; the first was found in 2024 by transit (Transiting Exoplanet Survey Satellite (TESS)).

Fly there in 3D

Worth knowing

TOI-2374 b goes round its star every 4.31 days, 20 times as often as Mercury goes round the Sun.

TOI-2374 is one of 2 stars in its system: the other is drawn where the Washington Double Star Catalog measures it on the sky.

The star

Surface temperature5,002 K
Mass0.802 solar masses
Radius0.711 solar radii
Luminosity0.285 times the Sun
Apparent magnitude12.095
Ageabout 4.5 billion years
Distance from the Sun439.2 light-years (134.7 parsecs)
Position (J2000)RA 319.4982°, Dec -22.0498°
ConstellationCapricornus

The other star

TOI-2374 A is a G1V star of magnitude 9.34, moving through space with it. In 2016 it was 22.3″ from TOI-2374, at position angle 47° (Washington Double Star Catalog, 21180-2203 RSS 558): 3,003 AU on the sky at this distance. The true distance can only be larger.

Planets (1)

PlanetYearOrbitRadiusMassFound
TOI-2374 b4.31 days0.0482 AU7.4876 R⊕61.659 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 5,002 K, 0.28 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.53 to 0.96 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 439 years ago, around 1590.

Nearest systems to it

Also found by Transiting Exoplanet Survey Satellite (TESS)

Sources

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