Kepler-1633 b
Also written Kepler-1633b, Kepler 1633b, Kepler 1633 b
- Mass
- 3.12 × Earth
- Radius
- 1.58 × Earth
- Gravity
- 1.25 g
- Surface (est.)
- 657 K
- Year
- 186 days
- From Earth
- 3,620 ly
- Mass
- 3.12 × Earth
- Radius
- 1.58 × Earth
- Gravity
- 1.25 g
- Surface (est.)
- 657 K
- Year
- 186 days
- From Earth
- 3,620 ly
Kepler-1633 system
- Type
- F-type (White)
- Temperature
- 6,256 K
- Radius
- 1.32 ☉
- Mass
- 1.2 ☉
- Planets
- 1
- Luminosity
- 4.43 ☉
Published by the NASA Exoplanet Archive. This world’s temperature and habitability score are computed from this star’s measured luminosity, not from a stand-in for its class.
Kepler-1633 b0.39 AUYou are here3.1 M⊕Star and planets drawn to scale: the star is 91 times as wide as Kepler-1633 b, so only its edge is in view. Orbits spaced as in the star system view.
Sub-Neptune, likely · its density could also fit a rocky world
Kepler-1633 b, from the NASA Exoplanet Archive (found 2016). Measured: 3.12 Earth masses, 0.388 AU, a 6256 K F-type star. Composition inferred from a measured bulk density of 0.79x Earth's, too low for bare rock at this size, suggesting a rocky core under roughly a 0.6% hydrogen/helium envelope by mass, with an assumed 24-hour day — rotation cannot be measured for exoplanets. Note: TerraForge comes out at 657 K against the archive's 925 K, because it models stars by spectral class, and Kepler-1633 is not an average F-type.
Surface. No solid surface - a hydrogen-helium envelope wrapped around a rocky core (a sub-Neptune)
Deep hydrogen-helium envelope with photochemical haze
Hydrogen-rich atmosphere typical of gas giants