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KELT-1 b is a Gas Giant exoplanet (a massive planet composed primarily of hydrogen and helium), about 12.4 times the radius of Earth. The planet completes one orbit around its star every 29 hours. It was discovered in 2012 using the transit method. It orbits the star KELT-1, located approximately 268 parsecs (876 light-years) from Earth.
2012
Discovered
8654.1
Earth Masses
12.44
Earth Radii
Discovery Information
Discovery MethodTransit
Discovery Year2,012
Discovery FacilityKELT
Orbital Properties
Orbital Period1.2175 days
Semi-Major Axis0.0247 AU
Eccentricity0.0099
Inclination87.8 deg
Physical Properties
Mass (Jupiter)27.23 MJ
Mass (Earth)8,654.15 M⊕
Radius (Jupiter)1.11 RJ
Radius (Earth)12.442 R⊕
Density24.7 g/cm3
Planetary Extremes
Where KELT-1 b sits on the spectrum of all known exoplanets.
Mass8654.1 M⊕
FeatherweightColossus
Radius12.44 R⊕
TinyEnormous
Year Length1.2 days
LightningGlacial
Density24.70 g/cm³
FluffyIron-dense
Star Distance0.025 AU
ScorchedFrozen exile
Star System View
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Size Comparison
12.44x Earth's radius (1.11x Jupiter)
Orbit Comparison
Earth: 365.25 days (1 AU)KELT-1 b: 29 hours (0.025 AU)
Host Star: KELT-1
Effective Temperature6,516 K
Mass1.335 M☉
Radius1.471 R☉
Size vs Sun1.47x larger
Luminosity3.5075 L☉
Luminosity vs Sun3.508x brighter
Metallicity [Fe/H]0.052
Distance (pc)268.43 pc
Distance (ly)875.5 light-years
Planets in the KELT-1 System
What If You Lived Here?
3913.3 kg
Your weight (from 70 kg)
55.90g
Lethal
No human could survive. You'd be pinned to the ground.
29 hours
Year length
Unknown sunrise
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