Kepler-37b
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Exoplanet Kepler-37b |
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| artist's impression | |
| Constellation | lyre |
| Position equinox : J2000.0 |
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| Right ascension | 18h 56m 14.308s |
| declination | + 44 ° 31 ′ 05.389 ″ |
| Orbit data | |
| Central star | Kepler 37 |
| Major semi-axis | 0.1003 AU |
| Period of circulation | 13,367 d |
| Further data | |
| radius | 0.34 R E |
| distance | 64 pc |
| Discovery method | Transit method |
| Orbit inclination | 88.63 +0.3−0.53° |
| history | |
| discovery | Jack Lissauer (Head of Discovery) |
| Date of discovery | 20th February 2013 |
| Catalog names | |
| Kepler-37b, KOI-245b, KOI-245.03 | |
Kepler-37b is an extrasolar planet that accompanies the star Kepler-37 in the constellation Lyra . It is the smallest exoplanet to date (as of 2013) that orbits a main sequence star. Its radius (and probably also its mass) are only slightly larger than that of the earthly moon .
discovery
Kepler-37b was discovered by the Kepler Space Telescope along with the planets Kepler-37c and -37d . Its size was determined by asteroseismology . Kepler-37 is the smallest star to date to have this type of technique applied. This procedure allows the size of a planet to be determined very precisely. Its discovery was made possible by its short orbital period , its relative brightness, and the low activity of its sun. The discovery of Kepler-37b was directed by Jack Lissauer.
Data
Physical quantities
The planet, which is around 210 light years from Earth , is only slightly larger than our moon with a diameter of 3900 km. According to NASA, the planet may not have an atmosphere , so no life is possible. In addition, its surface is actually only composed of rocks, as it circles the sun so closely. Its surface temperature is around 425 ° C.
Orbital sizes
Kepler-37b orbits its sun at a distance of around 15 million kilometers with an orbital period of around 13 days. The two outer planets orbit their sun in an approximate ratio of 8: 5 and 3: 1 to the extrasolar Kepler-37b.
Web links
- NASA: Smallest exoplanet discovered to date - Report to Heise online , from February 20, 2013
Individual evidence
- ↑ KOI-245.03. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed on January 13, 2019 .
- ↑ a b c d Kepler-37 b. In: Extrasolar Planets Encyclopaedia . Retrieved January 13, 2019 .
- ↑ Kepler-37 b. In: NASA Exoplanet Archive . Retrieved January 13, 2019 .
- ^ KOI-245. In: SIMBAD. Center de Données astronomiques de Strasbourg, accessed on January 13, 2019 .
- ↑ Smallest Alien Planet Kepler-37b Explained (Infographic)