Kepler 37

from Wikipedia, the free encyclopedia
Star
Kepler-37
Size comparison of the planets of Kepler-37 with objects of the solar system
Size comparison of the planets of Kepler-37 with objects of the solar system
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation lyre
Right ascension 18 h 56 m 14.31 s
declination + 44 ° 31 ′ 5.4 ″
Apparent brightness 9.77 likes
Typing
Known exoplanets 3
B − V color index (+0.68) 
Astrometry
Radial velocity (−30.58 ± 0.30) km / s
parallax (15.62 ± 0.03)  mas
distance (208.7 ± 0.4)  Lj
(64.0 ± 0.1)  pc
Proper movement 
Rec. Share: (−60.52 ± 0.05)  mas / a
Dec. portion: (48.69 ± 0.05)  mas / a
Physical Properties
Dimensions (0.80 ± 0.07)  M ☉
radius (0.77 ± 0.03)  R ☉
Effective temperature (5417 ± 75)  K.
Metallicity [Fe / H] (−0.32 ± 0.07)
Age 6 billion  a
Other names
and catalog entries
Tycho catalog TYC 3131-1199-1 [1]
2MASS catalog 2MASS J18561431 + 4431052 [2]
Other names Kepler-37, KOI-245

Kepler-37 is a star about 210 light-years away from Earth . The star is located in the constellation Lyra and is slightly smaller than the sun .

With the Kepler space telescope , three planets orbiting it were discovered. There are also 2 planet candidates in the system.

Planets

Kepler 37 planets
planet Discovery year Semi-major axis
( AE ) 		Period
( days ) 		Radius
( R E )
b 2013 0.1003 13.37 0.34
c 2013 0.1368 21.30 0.75
d 2013 0.2076 39.79 1.94

Kepler-37b is only slightly larger than the moon , but smaller than the planet Mercury . This makes it about a third the diameter of the earth . It orbits its central star at a very short distance (approx. 0.1 AU). Currently (2013) it is the smallest known exoplanet .

There are at least two other exoplanets in the planetary system around Kepler-37 . Kepler-37c orbit around the central star in a further outward orbit and is slightly smaller than Venus .

Even further out is Kepler-37d, which is twice the size of Earth. Its distance to the central star is probably too small to be in the habitable zone .

Web links

Commons : Kepler-37  - collection of pictures, videos and audio files

Individual evidence

  1. ↑ a b c d e f KOI-245. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed on January 13, 2019 .
  2. ↑ a b c d e Kepler-37 b. In: Extrasolar Planets Encyclopaedia . Retrieved January 13, 2019 .
  3. ↑ Kepler 37. In: NASA Exoplanet Archive . Retrieved January 13, 2019 .