The K2-166 System
K2-166 is a planetary system in the constellation Virgo hosting 2 confirmed exoplanets, about 1,555 light-years from Earth.
Size Comparison: The Planets of K2-166
K2-166: Star and Habitable Zone
K2-166
- Surface temperature
- 5,960 K (Sun: 5,772 K)
- Mass
- 1.16 M☉
- Radius
- 1.61 R☉
Habitable zone of K2-166: 1.271–2.982 AU (conservative: 1.610–2.827 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 K2-166 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| K2-166 b | Mini Neptune | 8.5 d | 2.19 R⊕ | 0.25 | 2018 |
| EPIC 201615463 c | Terrestrial | 3.8 d | 1.22 R⊕ | 0.29 | 2019 |
Discovery History
The first planet found here, K2-166 b, was discovered in 2018 using the transit method. The most recent addition, EPIC 201615463 c, followed in 2019.
- 2018 — K2-166 b (Transit)
- 2019 — EPIC 201615463 c (Transit)
Frequently Asked Questions About K2-166
How many planets does K2-166 have?
K2-166 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the K2-166 system habitable?
None of the known planets in K2-166 orbit within the star's habitable zone.
How far away is K2-166?
K2-166 is about 1,555 light-years from Earth in the constellation Virgo.
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