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HD 15337 c is a Neptune-like exoplanet (an ice giant with a thick atmosphere), about 2.5 times the radius of Earth. The planet completes one orbit around its star every 17.2 Earth days. It was discovered in 2019 using the transit method. It orbits the star HD 15337, located approximately 45 parsecs (146 light-years) from Earth.
2019
Discovered
6.8
Earth Masses
2.53
Earth Radii
Discovery Information
Discovery MethodTransit
Discovery Year2,019
Discovery FacilityTransiting Exoplanet Survey Satellite (TESS)
Orbital Properties
Orbital Period17.1805 days
Semi-Major Axis0.1224 AU
Eccentricity0.096
Inclination88.41 deg
Physical Properties
Mass (Jupiter)0.0214 MJ
Mass (Earth)6.792 M⊕
Radius (Jupiter)0.2254 RJ
Radius (Earth)2.526 R⊕
Density2.303 g/cm3
Planetary Extremes
Where HD 15337 c sits on the spectrum of all known exoplanets.
Mass6.8 M⊕
FeatherweightColossus
Radius2.53 R⊕
TinyEnormous
Year Length17.2 days
LightningGlacial
Density2.30 g/cm³
FluffyIron-dense
Star Distance0.122 AU
ScorchedFrozen exile
Star System View
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Size Comparison
2.53x Earth's radius (0.23x Jupiter)
Orbit Comparison
Earth: 365.25 days (1 AU)HD 15337 c: 17.2 Earth days (0.122 AU)
Host Star: HD 15337
Effective Temperature5,131 K
Mass0.829 M☉
Radius0.855 R☉
Size vs Sun1.17x smaller
Metallicity [Fe/H]0.03
Distance (pc)44.8155 pc
Distance (ly)146.2 light-years
Planets in the HD 15337 System
What If You Lived Here?
74.5 kg
Your weight (from 70 kg)
1.06g
Earth-like
Feels just like home — comfortably familiar.
17.2 Earth days
Year length
Unknown sunrise
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Related Research
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