Kepler-62

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Star
Kepler-62
Kepler-62f with 62e as Morning Star.jpg
Artist's impression of Kepler-62f with Kepler-62 in the background
Location of Kepler-62
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation lyre
Right ascension 18 h 52 m 51.06 s
declination + 45 ° 20 ′ 59.5 ″
Typing
Known exoplanets 5
Spectral class K2 V
Astrometry
distance approx. 1200  ly
Physical Properties
Dimensions (0.69 ± 0.02)  M ☉
radius (0.64 ± 0.02)  R ☉
Effective temperature (4925 ± 70)  K.
Metallicity [Fe / H] −0.209
Age 7 ± 4 billion  a
Other names
and catalog entries
2MASS catalog 2MASS J18525105 + 4520595 [1]
Other names KIC 9002278

Kepler-62 is a star of the spectral class K2V in the constellation Lyra , 1200 light-years from Earth. It is slightly colder than the Sun and has at least five exoplanets orbiting it.

Planetary system

Comparison of the Kepler-62 system and the inner solar system, the planetary diameters are shown to scale, the surfaces of the planets of Kepler-62 are artistic speculation.

On April 18, 2013, researchers at the Kepler Telescope announced that the star has five planets. All of them were discovered using the transit method: seen from Earth, the planets pass in front of their star once per orbit. This leads to a difference in brightness, which is measured by the Kepler telescope. The masses of the planets could not yet be measured, so only very rough upper limits are known.

The two outermost planets, Kepler-62e and Kepler-62f , could be Earth-like and have rocks and liquid water on their surface. Some scientists even suspect that they could be so-called ocean planets .

planet Mass
(in earth masses) 		Radius
(in earth radii) 		Density
(g / cm 3 ) 		Cycle
time
(days) 		Semi-major
axis
( AE ) 		Orbit inclination
( degree )
b <9 1.31 ± 0.04 ? 5.71493 0.0553 89.2 ± 0.4
c <4 0.54 ± 0.03 ? 12.4417 0.0929 89.7 ± 0.2
d <14 1.95 ± 0.07 ? 18.16406 0.120 89.7 ± 0.3
e <36 1.61 ± 0.05 ? 122.3874 0.427 89.98 ± 0.02
f <35 1.41 ± 0.07 ? 267.291 0.718 89.90 ± 0.03

Web links

Commons : Kepler-62  - album with pictures, videos and audio files

Individual evidence

  1. ↑ Simbad
  2. ↑ Kepler Input Catalog (2009)
  3. ↑ a b William J. Borucki, et al. : Kepler-62: A Five-Planet System with Planets of 1.4 and 1.6 Earth Radii in the Habitable Zone . In: Science Express . April 18, 2013. doi : 10.1126 / science.1234702 .
  4. ↑ Welt ohne Land from Der Spiegel , accessed on April 6, 2014