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The KOI-55 System

2 planets Cygnus

KOI-55 is a planetary system in the constellation Cygnus hosting 2 confirmed exoplanets, about 4,015 light-years from Earth.

Size Comparison: The Planets of KOI-55

Earth1.00 R⊕b0.76 R⊕c0.87 R⊕
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KOI-55: Star and Habitable Zone

KOI-55

Spectral type
B
Surface temperature
27,730 K (Sun: 5,772 K)
Mass
0.50 M☉
Radius
0.20 R☉
Luminosity
22.9087 L☉

All 2 Planets in the KOI-55 System

PlanetTypeOrbitRadiusESIDiscovered
KOI-55 bTerrestrial0.2 d0.76 R⊕0.292011
KOI-55 cTerrestrial0.3 d0.87 R⊕0.292011

Discovery History

The first planet found here, KOI-55 b, was discovered in 2011 using the orbital brightness modulation method.

  • 2011 — KOI-55 b (Orbital Brightness Modulation)
  • 2011 — KOI-55 c (Orbital Brightness Modulation)

Frequently Asked Questions About KOI-55

How many planets does KOI-55 have?

KOI-55 has 2 confirmed exoplanets. More may await discovery.

Are any planets in the KOI-55 system habitable?

None of the known planets in KOI-55 orbit within the star's habitable zone.

How far away is KOI-55?

KOI-55 is about 4,015 light-years from Earth in the constellation Cygnus.

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