The Kepler-553 System
Kepler-553 is a planetary system in the constellation Cygnus hosting 2 confirmed exoplanets, about 2,376 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 Kepler-553
Kepler-553: Star and Habitable Zone
Kepler-553
- Surface temperature
- 5,191 K (Sun: 5,772 K)
- Mass
- 0.89 M☉
- Radius
- 0.90 R☉
- Luminosity
- 0.5360 L☉
- Age
- 8.8 billion years (Sun: 4.6)
Habitable zone of Kepler-553: 0.568–1.363 AU (conservative: 0.719–1.293 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-553 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| Kepler-553 b | Neptune-like | 4.0 d | 4.74 R⊕ | 0.16 | 2016 |
| Kepler-553 c HZ | Cold Gas Giant | 328 d | 11.58 R⊕ | 0.39 | 2016 |
Discovery History
The first planet found here, Kepler-553 b, was discovered in 2016 using the transit method.
- 2016 — Kepler-553 b (Transit)
- 2016 — Kepler-553 c (Transit)
Frequently Asked Questions About Kepler-553
How many planets does Kepler-553 have?
Kepler-553 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the Kepler-553 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 Kepler-553?
Kepler-553 is about 2,376 light-years from Earth in the constellation Cygnus.
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