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Diagram showing star positions and boundaries of the constellation and its surroundings Location of Kepler-37 in (circled) |
Kepler-37 is a star 215.2 light years away in the constellation Lyra. It is host to the exoplanets Kepler-37b, Kepler-37c and Kepler-37d. They all orbit very close to the star. Kepler-37 has a mass of about 80.3 percent the Sun's, and a radius of about 77 percent. It is roughly 6 billion years old.
Planetary system
Kepler-37b is closest to the star. It is the smallest known exoplanet as of February 2013. At 3865 kilometers in diameter it is barely larger than Earth's moon. It orbits Kepler-37 once every 13 Earth days and is too small and too close to its star to maintain an atmosphere.
Kepler-37c is similar in size to Venus.
Kepler-37d is about three times the size of Earth. It has an orbital period of 39.792187 Earth days.
References
- Nature,
- Bad Astronomy,
- NASA,
- JPL
See also
- NASA, Kepler mission, Table of Confirmed Planets
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