The TOI-1669 System
TOI-1669 is a planetary system in the constellation Cepheus hosting 2 confirmed exoplanets, about 363 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-1669
Planets without a measured radius are not shown.
TOI-1669: Star and Habitable Zone
TOI-1669
- Surface temperature
- 5,497 K (Sun: 5,772 K)
- Mass
- 0.99 M☉
- Radius
- 1.06 R☉
- Luminosity
- 0.9210 L☉
- Age
- 7.7 billion years (Sun: 4.6)
Habitable zone of TOI-1669: 0.732–1.739 AU (conservative: 0.927–1.649 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-1669 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| TOI-1669 b HZ | Cold Gas Giant | 500 d | — | 0.37 | 2023 |
| TOI-1669 c | Super Earth | 2.7 d | 2.30 R⊕ | — | 2024 |
Discovery History
The first planet found here, TOI-1669 b, was discovered in 2023 using the radial velocity method. The most recent addition, TOI-1669 c, followed in 2024.
- 2023 — TOI-1669 b (Radial Velocity)
- 2024 — TOI-1669 c (Transit)
Frequently Asked Questions About TOI-1669
How many planets does TOI-1669 have?
TOI-1669 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the TOI-1669 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-1669?
TOI-1669 is about 363 light-years from Earth in the constellation Cepheus.
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