Kepler 102

Database links to Kepler-102

Star Kepler-102
AladinLite
Observation dates equinox :  J2000.0 , epoch : J2000.0
Constellation	lyre
Right ascension	18 h 45 m 55.86 s
declination	+ 47 ° 12 ′ 28.8 ″
Apparent brightness	12.07 ± 0.19 mag
Typing
Known exoplanets	5
B − V color index	(0.51)
Spectral class	K3 V
Astrometry
Radial velocity	(-27.67 ± 0.61) km / s
parallax	(9.25 ± 0.02)  mas
distance	(352 ± 1)  ly (108)  pc
Proper movement
Rec. Share:	(−41.14 ± 0.04)  mas / a
Dec. portion:	(−43.14 ± 0.04)  mas / a
Physical Properties
Dimensions	0.81   +0.04−0.09 M ☉
radius	0.76 ± 0.07  R ☉
Luminosity	0.3 ± 0.1  L ☉
Effective temperature	4,909 ± 41  K
Metallicity [Fe / H]	0.18   +0.42−0.47
Age	1.41 billion  a
Other names and catalog entries
Tycho catalog TYC 3544-1383-1 [1] 2MASS catalog 2MASS J18455585 + 4712289 [2] Other names KIC 10187017, KOI-82, Kepler-102

Kepler-102 is a star in the constellation Lyra . The star in a main sequence star of the spectral class K. Its mass and radius as well as its luminosity are aösp lower than those of the sun . The system is approximately 350 LJ from the sun. Kepler-102 has a planetary system made up of five known exoplanets .

Planetary system

The discovery of 49 exoplanet candidates around 22 stars, including Kepler-102, was published in January 2014 based on observations from the Kepler Space Telescope . The two innermost planets and the outermost planet have a smaller radius than the earth . The largest planet is Kepler-102d, whose mass could be determined from measurements of the radial velocity to be a little less than 9 Earth masses . All planets need far less time to orbit their central star than Mercury does to orbit the sun.

Planetary system from Kepler-102

Planet (by distance from the star)	Discovery (year)	Radius (in ) ${\displaystyle R_{\oplus }}$	Mass (in M ⊕ )	Cycle time (in days)	Major semi-axis (in AU )	eccentricity
Kepler-102b	2014	0.47 ± 0.02	0.41 ± 1.6	5,28696	-	-
Kepler-102c	2014	0.58 ± 0.02	<3.0	7.07142	-	-
Kepler-102d	2014	1.18 ± 0.04	3.80 ± 1.8	10.3117	-	-
Kepler-102e	2014	2.22 ± 0.07	8.93 ± 2.0	16.1457	-	-
Kepler-102f	2014	0.88 ± 0.03	0.62 ± 3.3	27.4536	-	-

Individual evidence

1. ↑ ^{a b c d e f g} KOI-82. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed on September 3, 2018 . 
2. ↑ ^{a b c d e f g h i j k} NASA Exoplanet Archive: Kepler 102.Retrieved September 3, 2018 . 
3. ^ ^{A b} Marcy, Geoffrey W. et al .: Masses, Radii, and Orbits of Small Kepler Planets: The Transition from Gaseous to Rocky Planets . arxiv : 1401.4195 .