The TOI-5789 System
TOI-5789 is a planetary system in the constellation Sagitta hosting 4 confirmed exoplanets, about 67 light-years from Earth.
Size Comparison: The Planets of TOI-5789
Planets without a measured radius are not shown.
TOI-5789: Star and Habitable Zone
TOI-5789
- Spectral type
- K1 V
- Surface temperature
- 5,185 K (Sun: 5,772 K)
- Mass
- 0.82 M☉
- Radius
- 0.83 R☉
- Luminosity
- 0.4690 L☉
- Age
- 9.4 billion years (Sun: 4.6)
Habitable zone of TOI-5789: 0.531–1.276 AU (conservative: 0.673–1.210 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 4 Planets in the TOI-5789 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| TOI-5789 b | Super Earth | 2.8 d | — | — | 2026 |
| TOI-5789 c | Puffy Planet | 13 d | 2.86 R⊕ | — | — |
| TOI-5789 d | Super Earth | 30 d | — | — | 2026 |
| TOI-5789 e | Neptune-like | 63 d | — | — | 2026 |
Discovery History
The first planet found here, TOI-5789 c, was discovered in 0 using the transit method. The most recent addition, TOI-5789 e, followed in 2026.
- 0 — TOI-5789 c (Transit)
- 2026 — TOI-5789 b (Radial Velocity)
- 2026 — TOI-5789 d (Radial Velocity)
- 2026 — TOI-5789 e (Radial Velocity)
Frequently Asked Questions About TOI-5789
How many planets does TOI-5789 have?
TOI-5789 has 4 confirmed exoplanets. More may await discovery.
Are any planets in the TOI-5789 system habitable?
None of the known planets in TOI-5789 orbit within the star's habitable zone.
How far away is TOI-5789?
TOI-5789 is about 67 light-years from Earth in the constellation Sagitta.
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