The HD 22946 System
HD 22946 is a planetary system in the constellation Eridanus hosting 3 confirmed exoplanets, about 205 light-years from Earth.
Size Comparison: The Planets of HD 22946
HD 22946: Star and Habitable Zone
HD 22946
- Surface temperature
- 6,169 K (Sun: 5,772 K)
- Mass
- 1.10 M☉
- Radius
- 1.12 R☉
- Age
- 2.5 billion years (Sun: 4.6)
Habitable zone of HD 22946: 0.933–2.178 AU (conservative: 1.182–2.065 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 HD 22946 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| TOI-411 b | Super Earth | 4.0 d | 1.36 R⊕ | 0.29 | 2022 |
| TOI-411 c | Super Earth | 9.6 d | 2.33 R⊕ | 0.25 | 2022 |
| HD 22946 d | Super Earth | 47 d | 2.61 R⊕ | 0.29 | 2023 |
Discovery History
The first planet found here, TOI-411 b, was discovered in 2022 using the transit method. The most recent addition, HD 22946 d, followed in 2023.
- 2022 — TOI-411 b (Transit)
- 2022 — TOI-411 c (Transit)
- 2023 — HD 22946 d (Transit)
Frequently Asked Questions About HD 22946
How many planets does HD 22946 have?
HD 22946 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the HD 22946 system habitable?
None of the known planets in HD 22946 orbit within the star's habitable zone.
How far away is HD 22946?
HD 22946 is about 205 light-years from Earth in the constellation Eridanus.
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