The Kepler-278 System
Kepler-278 is a planetary system in the constellation Lyra hosting 2 confirmed exoplanets, about 1,445 light-years from Earth.
Size Comparison: The Planets of Kepler-278
Kepler-278: Star and Habitable Zone
Kepler-278
- Spectral type
- K2 III-IV
- Surface temperature
- 4,965 K (Sun: 5,772 K)
- Mass
- 1.23 M☉
- Radius
- 2.86 R☉
- Luminosity
- 4.4600 L☉
- Age
- 5.8 billion years (Sun: 4.6)
Habitable zone of Kepler-278: 1.657–4.012 AU (conservative: 2.099–3.803 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 Kepler-278 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-278 b | Super Earth | 30 d | 3.96 R⊕ | 0.19 | 2014 |
| Kepler-278 c | Super Earth | 51 d | 3.27 R⊕ | 0.21 | 2014 |
Discovery History
The first planet found here, Kepler-278 b, was discovered in 2014 using the transit method.
- 2014 — Kepler-278 b (Transit)
- 2014 — Kepler-278 c (Transit)
Frequently Asked Questions About Kepler-278
How many planets does Kepler-278 have?
Kepler-278 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-278 system habitable?
None of the known planets in Kepler-278 orbit within the star's habitable zone.
How far away is Kepler-278?
Kepler-278 is about 1,445 light-years from Earth in the constellation Lyra.
Explore the Kepler-278 system in the app
Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.
