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The TOI-1736 System

2 planets 1 in habitable zone Cassiopeia

TOI-1736 is a planetary system in the constellation Cassiopeia hosting 2 confirmed exoplanets, about 290 light-years from Earth. One of its planets orbits within the habitable zone, where liquid water could exist on a planetary surface.

Size Comparison: The Planets of TOI-1736

Earth1.00 R⊕b3.18 R⊕
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Planets without a measured radius are not shown.

TOI-1736: Star and Habitable Zone

TOI-1736

Surface temperature
5,636 K (Sun: 5,772 K)
Mass
1.04 M☉
Radius
1.43 R☉
Luminosity
1.8650 L☉
Age
9.2 billion years (Sun: 4.6)
TOI-1736 b TOI-1736 c
Too hot Optimistic habitable zone Conservative habitable zone Too cold

Habitable zone of TOI-1736: 1.034–2.445 AU (conservative: 1.309–2.318 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 2 Planets in the TOI-1736 System

PlanetTypeOrbitRadiusESIDiscovered
TOI-1736 bSub Neptune7.1 d3.18 R⊕0.242023
TOI-1736 c HZCold Gas Giant571 d0.402023

Discovery History

The first planet found here, TOI-1736 b, was discovered in 2023 using the transit method.

Frequently Asked Questions About TOI-1736

How many planets does TOI-1736 have?

TOI-1736 has 2 confirmed exoplanets. More may await discovery.

Are any planets in the TOI-1736 system habitable?

One planet in the system orbits within the habitable zone, where liquid water could exist. Actual habitability depends on atmospheres and composition, which are not yet known.

How far away is TOI-1736?

TOI-1736 is about 290 light-years from Earth in the constellation Cassiopeia.

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