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| '''Kepler-37''' is a yellow dwarf, ], 215.2 ] from Earth |
'''Kepler-37''' is a yellow dwarf, ], located in the ] ], 215.2 ] from Earth. It is host to ] Kepler-37b, Kepler-37c and Kepler-37d, all of which orbit very close to the star. Kepler-37 has a mass about 80.3 percent of the ] and a radius about 77 percent as large. It has a temperature similar to that of the Sun, but a bit cooler at 5,417 ]. It has about half the ] of our Sun. With an age of roughly 6 billion years, it is slightly older than the Sun, but is still a main-sequence star. | ||
| == Planetary system == | == Planetary system == | ||
| Kepler-37b is the closest planet to the Kelper-37. At the time of its discovery in February 2013, it was the smallest known exoplanet.<ref name= |
Kepler-37b is the closest planet to the Kelper-37. At the time of its discovery in February 2013, it was the smallest known exoplanet.<ref name=scienceworld>{{cite news|title=Tiniest Planet Yet Discovered by NASA Outside our Solar System|author=Catherine Griffin|work=Science World Report|date=February 21, 2013|url=http://www.scienceworldreport.com/articles/5098/20130221/tiniest-planet-discovered-nasa-outside-solar-system.htm|accessdate=February 21, 2013}}</ref> At 3865 kilometers in diameter, it is slightly larger than ] ].<ref name=scienceworld /> It orbits Kepler-37 once every 13 Earth days at a distance of about 0.1 ]s (AU). Kepler-37b has a rocky surface and is believed to be too small and too close to its star to support water or maintain an atmosphere.<ref name=scienceworld /> | ||
| Kepler-37c is around three-quarters of the diameter of Earth and orbits approximately every 21 Earth days at a distance of just under 0.14 AU. | Kepler-37c is around three-quarters of the diameter of Earth and orbits approximately every 21 Earth days at a distance of just under 0.14 AU. Kepler-37d is about twice the diameter of Earth. It orbits in around 40 Earth days at a distance of nearly 0.21 AU. Neither is able to support water due to their close proximity to Kepler-37.<ref name=scienceworld /> | ||
| ===Discovery=== | |||
| Kepler-37d is about twice the diameter of Earth. It orbits in around 40 Earth days at a distance of nearly 0.21 AU. | |||
| The Kelpler planets were discovered in February 2013 with the aid of the ]. The exoplanets planets were considerably smaller than any previously detected, leading '']'' to state that a "a major technological improvement for the telescope" had been achieved.<ref name=scienceworld /> | |||
| ==References== | ==References== | ||
| {{reflist}} | {{reflist}} | ||
| ⚫ | * ''Nature'', |
||
| * "Bad Astronomy", | * "Bad Astronomy", | ||
| * NASA, | * NASA, | ||
| Line 25: | Line 25: | ||
| ==External links== | ==External links== | ||
| ⚫ | * ''Nature'', on the discovery | ||
| ** | |||
| * NASA, Kepler mission, | * NASA, Kepler mission, | ||
Revision as of 14:46, 21 February 2013
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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 yellow dwarf, G-type star, located in the constellation Lyra, 215.2 light years from Earth. It is host to exoplanets Kepler-37b, Kepler-37c and Kepler-37d, all of which orbit very close to the star. Kepler-37 has a mass about 80.3 percent of the Sun's and a radius about 77 percent as large. It has a temperature similar to that of the Sun, but a bit cooler at 5,417 Kelvin. It has about half the metallicity of our Sun. With an age of roughly 6 billion years, it is slightly older than the Sun, but is still a main-sequence star.
Planetary system
Kepler-37b is the closest planet to the Kelper-37. At the time of its discovery in February 2013, it was the smallest known exoplanet. At 3865 kilometers in diameter, it is slightly larger than Earth's moon. It orbits Kepler-37 once every 13 Earth days at a distance of about 0.1 astronomical units (AU). Kepler-37b has a rocky surface and is believed to be too small and too close to its star to support water or maintain an atmosphere.
Kepler-37c is around three-quarters of the diameter of Earth and orbits approximately every 21 Earth days at a distance of just under 0.14 AU. Kepler-37d is about twice the diameter of Earth. It orbits in around 40 Earth days at a distance of nearly 0.21 AU. Neither is able to support water due to their close proximity to Kepler-37.
Discovery
The Kelpler planets were discovered in February 2013 with the aid of the Kepler space telescope. The exoplanets planets were considerably smaller than any previously detected, leading Science World Reports to state that a "a major technological improvement for the telescope" had been achieved.
References
- ^ Catherine Griffin (February 21, 2013). "Tiniest Planet Yet Discovered by NASA Outside our Solar System". Science World Report. Retrieved February 21, 2013.
- "Bad Astronomy",
- NASA,
- JPL
External links
- Nature, article on the discovery
- NASA, Kepler mission, Table of Confirmed Planets
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