The TOI-5398 System
TOI-5398 is a planetary system in the constellation Leo Minor hosting 2 confirmed exoplanets, about 427 light-years from Earth.
Size Comparison: The Planets of TOI-5398
TOI-5398: Star and Habitable Zone
TOI-5398
- Spectral type
- G V
- Surface temperature
- 6,000 K (Sun: 5,772 K)
- Mass
- 1.15 M☉
- Radius
- 1.05 R☉
- Age
- 0.7 billion years (Sun: 4.6)
Habitable zone of TOI-5398: 0.839–1.966 AU (conservative: 1.063–1.864 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-5398 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| TOI-5398 b | Cold Gas Giant | 11 d | 10.30 R⊕ | 0.09 | 2022 |
| TOI-5398 c | Sub Neptune | 4.8 d | 3.52 R⊕ | 0.19 | 2023 |
Discovery History
The first planet found here, TOI-5398 b, was discovered in 2022 using the transit method. The most recent addition, TOI-5398 c, followed in 2023.
- 2022 — TOI-5398 b (Transit)
- 2023 — TOI-5398 c (Transit)
Frequently Asked Questions About TOI-5398
How many planets does TOI-5398 have?
TOI-5398 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the TOI-5398 system habitable?
None of the known planets in TOI-5398 orbit within the star's habitable zone.
How far away is TOI-5398?
TOI-5398 is about 427 light-years from Earth in the constellation Leo Minor.
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