| 词条 | Kepler-102 |
| 释义 |
| name = Kepler-102 }}{{Starbox observe | epoch = J2000 | ra = {{RA|18|45|55.8553}} | dec = {{DEC|+47|12|28.859}} | constell = Lyra | appmag_v = 12.07[3] }}{{Starbox astrometry | radial_v = | prop_mo_ra = {{val|−40.603|1.244}} | prop_mo_dec = {{val|−44.144|0.889}} | parallax = 9.62 | p_error = 0.34 | parallax_footnote = | absmag_v = }}{{Starbox detail | mass = 0.8[7] | radius = 0.74[7] | temperature = 4903[7] | metal_fe = +0.08[7] | luminosity = | rotation = {{val|26.572|0.153|s= d}}[11] | age_gyr = }}{{Starbox catalog | names = {{odlist|KOI=82|KIC=10187017|TYC=3544-1383-1}} }}{{Starbox reference | Simbad = Kepler-102 }}{{Starbox end}} Kepler-102 is a star in the constellation of Lyra. It has five known exoplanets. Kepler-102 is less luminous than the Sun.{{cn|date=January 2018}} Planetary systemOn January 2014, a system of five planets around the star was announced, three of them being smaller than Earth. While 3 of the transit signals were discovered during the first year of the Kepler mission, their small size made them hard to confirm as possibilities of these being false positives were needed to be removed. Later, two other signals were detected. Follow-up radial velocity data helped to determine the mass of the largest planet.[1] {{OrbitboxPlanet begin| name = Kepler-102 | table_ref= [13] }}{{OrbitboxPlanet | exoplanet = b | period = 5.28696 | semimajor = 0.055 | radius_earth = 0.47 | inclination = 85.37 }}{{OrbitboxPlanet | exoplanet = c | period = 7.07142 | semimajor = 0.067 | radius_earth = 0.58 | inclination = 87.09 }}{{OrbitboxPlanet | exoplanet = d | period = 10.3117 | semimajor = 0.086 | radius_earth = 1.18 | inclination = 87.09 }}{{OrbitboxPlanet | exoplanet = e | mass_earth = 8.9 ± 2.0 | period = 16.1457 | semimajor = 0.116 | radius_earth = 2.22 | inclination = 87.66 }}{{OrbitboxPlanet | exoplanet = f | period = 27.4536 | semimajor = 0.165 | radius_earth = 0.88 | inclination = 88.24 }}{{Orbitbox end}} See also
References1. ^Masses, radii, and orbits of small Kepler planets: the transition from gaseous to rocky planets accessdate=8 January 2014 Gaia Data Release 1 catalog entry[2][3][4][5]2. ^1 {{cite journal | title=Stellar Rotation Periods of The Kepler objects of Interest: A Dearth of Close-In Planets Around Fast Rotators | last1=McQuillan | first1=A. | last2=Mazeh | first2=T. | last3=Aigrain | first3=S. | journal=The Astrophysical Journal Letters | volume=775 | issue=1 | at=L11 | year=2013 | arxiv=1308.1845 | bibcode=2013ApJ...775L..11M | doi=10.1088/2041-8205/775/1/L11 }} 3. ^1 {{cite simbad|title=KOI-82|accessdate=29 January 2018}} 4. ^1 2 3 4 {{Cite web | url=http://kepler.nasa.gov/Mission/discoveries/ | title=How many exoplanets has Kepler discovered?| date=2015-04-09}} 5. ^1 {{Cite web | url=http://astro.berkeley.edu/~gmarcy/22kois.pdf | title=Geoffrey Marcy – Personal Website}} }}{{Stars of Lyra}}{{Main-star-stub}} 3 : Lyra (constellation)|Kepler Objects of Interest|Planetary systems with five confirmed planets |
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