The Kepler-87 System
Kepler-87 is a planetary system in the constellation Cygnus hosting 2 confirmed exoplanets, about 4,021 light-years from Earth.
Size Comparison: The Planets of Kepler-87
Kepler-87: Star and Habitable Zone
Kepler-87
- Surface temperature
- 5,600 K (Sun: 5,772 K)
- Mass
- 1.10 M☉
- Radius
- 1.82 R☉
- Age
- 7.5 billion years (Sun: 4.6)
Habitable zone of Kepler-87: 1.297–3.070 AU (conservative: 1.642–2.911 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-87 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-87 b | Cold Gas Giant | 115 d | 13.49 R⊕ | 0.17 | 2013 |
| Kepler-87 c | Cold Gas Giant | 191 d | 6.14 R⊕ | 0.32 | 2013 |
Discovery History
The first planet found here, Kepler-87 b, was discovered in 2013 using the transit method.
- 2013 — Kepler-87 b (Transit)
- 2013 — Kepler-87 c (Transit)
Frequently Asked Questions About Kepler-87
How many planets does Kepler-87 have?
Kepler-87 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-87 system habitable?
None of the known planets in Kepler-87 orbit within the star's habitable zone.
How far away is Kepler-87?
Kepler-87 is about 4,021 light-years from Earth in the constellation Cygnus.
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