Kepler-34

Database links to Kepler-34

Double star Kepler-34
Observation dates equinox :  J2000.0 , epoch : J2000.0
AladinLite
Constellation	swan
Right ascension	19 h 45 m 44.597 s
declination	+ 44 ° 38 ′ 29.62 ″
Apparent brightness	15.0 mag
Known exoplanets	1
Astrometry
distance	1499 ± 33 pc
orbit
period	27.7958103 +0.00000016−0.00000015 d
Major semi-axis	0.22882 +.00019−0.00018 AE
eccentricity	0.52087 +0.00052−0.00055
Orbit inclination	89.8584 + 0.0075−0.0083
Individual data
Names	A; B.
Typing:
Spectral class	A.	G0V
	B.	G0V
Physical Properties:
Dimensions	A.	1.0479 + 0.0033−0.0030 M ☉
	B.	1.0208 ± 0.0022 M ☉
radius	A.	1.1618 + 0.0027−0.0031 R ☉
	B.	1.0927 + 0.0032−0.0027 R ☉
Other names and catalog entries
Further designations: 2MASS J19454459 + 4438296, KOI-2459, KIC 8572936, Kepler-34

Kepler-34 (also KOI-2459 ) is a binary system in the constellation Swan , which contains about 4900 light-years from the sun is removed. Both stars are orbited by a circumbinary exoplanet .

properties

The system consists of two of the sun comparable Yellow Dwarf the spectral G. mass and radius of both components are very similar, and somewhat greater than in the sun. Kepler-34 A and B circle once in a little less than 28 days on an eccentric orbit around their common barycentre . Its major orbit half axis is approximately 0.22882 AU . For an observer on earth , both stars move past each other as they orbit one another. Kepler-34 is therefore an eclipsing system .

Planetary system

A planet orbiting both stars was detected by the Kepler space telescope using the transit method , the discovery of which was published in 2012. The planet named Kepler-34 b (also Kepler-34 (AB) b ) has a radius of about 0.764 Jupiter radii and a mass of about 0.220 Jupiter masses . It orbits both stars once in about 288.822 days on a somewhat eccentric orbit with a major orbit half-axis of about 1.0896 AU.

The exoplanet probably did not originate in the area of ​​the system where it is now, but at a distance of more than 1.5 AU and then probably moved into its present orbit through migration .

Individual evidence

1. ↑ ^{a b} SIMBAD: Kepler-34. Retrieved May 31, 2015 . 
2. ↑ ^{a b} The Extrasolar Planets Enyclopaedia: Planet Kepler-34 (AB) b. (No longer available online.) Archived from the original on March 16, 2015 ; accessed on May 31, 2015 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.  
3. ↑ ^{a b c} NASA Exoplanet Archives: Kepler-34. Retrieved May 31, 2015 . 
4. ↑ ^{a b c d e f g h} Welsh et al .: The Transiting Circumbinary Planets Kepler-34 and Kepler-35 . arxiv : 1204.3955 .
5. ^ Lines et al .: Forming Circumbinary Planets: N-body Simulations of Kepler-34 . arxiv : 1402.0509 .