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The TOI-375 System

3 planets Hydrus

TOI-375 is a planetary system in the constellation Hydrus hosting 3 confirmed exoplanets, about 1,292 light-years from Earth.

Size Comparison: The Planets of TOI-375

Earth1.00 R⊕b10.77 R⊕
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Planets without a measured radius are not shown.

TOI-375: Star and Habitable Zone

TOI-375

Surface temperature
5,260 K (Sun: 5,772 K)
Mass
1.44 M☉
Radius
2.90 R☉
Luminosity
5.7540 L☉
Age
2.9 billion years (Sun: 4.6)
TOI-375 b TOI-375 c TOI-375 d
Too hot Optimistic habitable zone Conservative habitable zone Too cold

Habitable zone of TOI-375: 1.854–4.440 AU (conservative: 2.349–4.209 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.

See the full interactive habitable-zone view in the Exoplanet Explorer app ›

All 3 Planets in the TOI-375 System

PlanetTypeOrbitRadiusESIDiscovered
TOI-375 bHot Jupiter9.5 d10.77 R⊕2026
TOI-375 cCold Gas Giant116 d2026
TOI-375 dCold Gas Giant298 d2026

Discovery History

The first planet found here, TOI-375 b, was discovered in 2026 using the transit method.

Frequently Asked Questions About TOI-375

How many planets does TOI-375 have?

TOI-375 has 3 confirmed exoplanets. More may await discovery.

Are any planets in the TOI-375 system habitable?

None of the known planets in TOI-375 orbit within the star's habitable zone.

How far away is TOI-375?

TOI-375 is about 1,292 light-years from Earth in the constellation Hydrus.

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