| 词条 | Kepler-19 |
| 释义 |
| name = Kepler-19 }}{{Starbox observe | constell = Lyra | epoch = J2000 | ra = {{RA|19|21|40.9996}}[1] | dec = {{DEC|+37|51|06.436}}[1] | appmag_v = 12.04[1] }}{{Starbox astrometry | radial_v = | prop_mo_ra = {{val|25.284|0.033}}[1] | prop_mo_dec = {{val|−30.711|0.037}}[1] | parallax = 4.5465 | p_error = 0.0202 | parallax_footnote = [1] | absmag_v = }}{{Starbox detail | mass = {{val|0.936|0.04}}[2] | radius = {{val|0.85|0.018}}[2] | temperature = {{val|5541|60}}[2] | age_gyr = {{val|1.9|1.7}}[2] | metal_fe = -0.13[11] | gravity = 4.54[11] | rotational_velocity = {{val|1.8|0.5}}[3] }}{{Starbox catalog | names = KIC 2571238, KOI-84, TYC 3134-1549-1, GSC 03134-01549, 2MASS J19214099+3751064[4] }}{{Starbox reference | Simbad = Kepler-19 | KIC = 2571238 }}{{Starbox end}} Kepler-19 (TYC 3134-1549-1, 2MASS J19214099+3751064, GSC 03134-01549, KOI-84)[4] is a G7V star that is host to planets Kepler-19b, Kepler-19c, and Kepler-19d. It is located five arcminutes northwest of the much more distant open cluster NGC 6791. Planetary systemThere are three known planets in the Kepler-19 planetary system. Planet b was discovered by the transit method, c by transit-timing variations and d by radial velocity measurements.[17] {{OrbitboxPlanet begin| table_ref = [17] }}{{OrbitboxPlanet | exoplanet = b | mass_earth = {{val|8.4|1.6|1.5}} | period = {{val|9.28716|0.00004|0.00006}} | semimajor = | eccentricity = {{val|0.12|0.02}} | inclination = 89.94 | radius_earth = {{val|2.209|0.048}} }}{{OrbitboxPlanet | exoplanet = c | mass_earth = {{val|13.1|2.7}} | period = {{val|28.731|0.012|0.005}} | semimajor = | eccentricity = {{val|0.21|0.05|0.07}} }}{{OrbitboxPlanet | exoplanet = d | mass_earth = {{val|22.5|1.2|5.6}} | period = {{val|62.95|0.04|0.30}} | semimajor = | eccentricity = {{val|0.05|0.16|0.01}} }}{{Orbitbox end}} References1. ^{{cite journal|title=The Tycho-2 catalogue of the 2.5 million brightest stars|author1=Høg, E.|display-authors=etal|date=2000|journal=Astronomy and Astrophysics|volume=355|pages=L27–L30|bibcode=2000A&A...355L..27H}} [5][6]2. ^1 2 3 {{cite web|title=Notes on Kepler-19 b|url=http://exoplanet.eu/catalog/kepler-19_b/|accessdate=21 January 2017}} 3. ^{{cite journal|title=An abundance of small exoplanets around stars with a wide range of metallicities|author1=Buchhave, Lars A.|display-authors=etal|date=2012|journal=Nature|volume=486|issue=7403|pages=375–377|bibcode=2012Natur.486..375B|doi=10.1038/nature11121|pmid=22722196}} 4. ^1 2 3 {{cite simbad|title=KOI-84|accessdate=21 January 2017}} 5. ^1 2 3 4 5 {{cite DR2}} Gaia Data Release 2 catalog entry 6. ^1 2 {{cite journal | title=The Kepler-19 System: A Thick-envelope Super-Earth with Two Neptune-mass Companions Characterized Using Radial Velocities and Transit Timing Variations | last1=Malavolta | first1=Luca | last2=Borsato | first2=Luca | last3=Granata | first3=Valentina | last4=Piotto | first4=Giampaolo | last5=Lopez | first5=Eric | last6=Vanderburg | first6=Andrew | last7=Figueira | first7=Pedro | last8=Mortier | first8=Annelies | last9=Nascimbeni | first9=Valerio | last10=Affer | first10=Laura | last11=Bonomo | first11=Aldo S. | last12=Bouchy | first12=Francois | last13=Buchhave | first13=Lars A. | last14=Charbonneau | first14=David | last15=Cameron | first15=Andrew Collier | last16=Cosentino | first16=Rosario | last17=Dressing | first17=Courtney D. | last18=Dumusque | first18=Xavier | last19=Fiorenzano | first19=Aldo F. M. | last20=Harutyunyan | first20=Avet | last21=Haywood | first21=Raphaëlle D. | last22=Johnson | first22=John Asher | last23=Latham | first23=David W. | last24=Lopez-Morales | first24=Mercedes | last25=Lovis | first25=Christophe | last26=Mayor | first26=Michel | last27=Micela | first27=Giusi | last28=Molinari | first28=Emilio | last29=Motalebi | first29=Fatemeh | last30=Pepe | first30=Francesco | display-authors=1 | journal=The Astronomical Journal | volume=153 | issue=5 | at=224 | year=2017 | arxiv=1703.06885 | bibcode=2017AJ....153..224M | doi=10.3847/1538-3881/aa6897 }} }} External links
5 : Lyra (constellation)|G-type main-sequence stars|Planetary systems with two confirmed planets|Planetary transit variables|Kepler Objects of Interest |
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