Kepler-17

{{Starbox begin

| name= Kepler-17

}}

{{Starbox observe

| constell = Cygnus

| epoch = J2000

| ra = {{RA|19|53|34.8643}}

| dec = {{DEC|+47|48|54.050}}

| appmag_v = 14.0{{cite encyclopedia|title=Notes on Kepler-17 b|url=https://exoplanet.eu/catalog/kepler_17_b--870/|encyclopedia=Extrasolar Planets Encyclopaedia|access-date=15 January 2017}}

}}

{{Starbox character

| type = main sequence

| class = G2V

}}

{{Starbox astrometry

| prop_mo_ra = {{val|−3.811|(17)}}

| prop_mo_dec = {{val|−6.339|(19)}}

| pm_footnote =

| parallax = 1.4115

| p_error = 0.0151

| parallax_footnote =

}}

{{Starbox detail

| source =

| mass = {{val|1.16|0.06}}

| radius = {{val|1.05|0.03}}

| temperature = {{val|5781|85}}

| metal_fe = 0.26 (± 0.1)

| rotation = {{val|12.159|0.029|s= days}}

| rotational_velocity = {{val|4.2|0.5}}{{cite simbad|title=Kepler-17|access-date=16 January 2017}}

| age_gyr = 3.0{{±|1.6}}{{citation|arxiv=1807.04886|title=Robust Transiting Exoplanet Radii in the Presence of Starspots from Ingress and Egress Durations|year=2018|doi=10.3847/1538-3881/aad3b7|last1=Morris|first1=Brett M.|last2=Agol|first2=Eric|last3=Hebb|first3=Leslie|last4=Hawley|first4=Suzanne L.|journal=The Astronomical Journal|volume=156|issue=3|page=91|bibcode=2018AJ....156...91M |s2cid=119420137 |doi-access=free }}

}}

{{Starbox catalog

| names = {{odlist | KIC=10619192 | KOI=203 | 2MASS=J19533486+4748540|Gaia DR2=2086449761846310784 }}

}}

{{Starbox reference

| Simbad = Kepler-17

| KIC = 10619192

}}

Kepler-17 is a main-sequence yellow dwarf star that is much more active than the Sun with starspots covering roughly 6% of its surface. Starspots are long-lived, with at least one persisting for 1400 days.{{citation|arxiv=1904.04489|title=Stellar activity and rotation of the planet host Kepler-17 from long-term space-borne photometry|year=2019|doi=10.1051/0004-6361/201833894|last1=Lanza|first1=A. F.|last2=Netto|first2=Y.|last3=Bonomo|first3=A. S.|last4=Parviainen|first4=H.|last5=Valio|first5=A.|last6=Aigrain|first6=S.|journal=Astronomy & Astrophysics|volume=626|pages=A38|bibcode=2019A&A...626A..38L |s2cid=104292264}}

Planetary system

The Kepler-17 is known to host one superjovian exoplanet, Kepler-17b, in orbit around it. It was discovered by the transit method in 2011.

{{OrbitboxPlanet begin

| table_ref = [https://exoplanet.eu/catalog/kepler_17_b--870/ Planet Kepler-17 b on exoplanet.eu]

}}

{{OrbitboxPlanet

| exoplanet = b

| mass = 2.45{{±|0.014}}

| radius = 1.312{{±|0.018}}

| period = 1.4857108{{±|2e-07}}

| semimajor = 0.02591{{±|0.00037}}

| eccentricity = <0.011

| inclination = 87.2{{±|0.15}}

}}

References

{{reflist|refs=

{{cite journal | title=The Hot-Jupiter Kepler-17b: Discovery, Obliquity from Stroboscopic Starspots, and Atmospheric Characterization | last1=Désert | first1=Jean-Michel | last2=Charbonneau | first2=David | last3=Demory | first3=Brice-Olivier | last4=Ballard | first4=Sarah | last5=Carter | first5=Joshua A. | last6=Fortney | first6=Jonathan J. | last7=Cochran | first7=William D. | last8=Endl | first8=Michael | last9=Quinn | first9=Samuel N. | last10=Isaacson | first10=Howard T. | last11=Fressin | first11=François | last12=Buchhave | first12=Lars A. | last13=Latham | first13=David W. | last14=Knutson | first14=Heather A. | last15=Bryson | first15=Stephen T. | last16=Torres | first16=Guillermo | last17=Rowe | first17=Jason F. | last18=Batalha | first18=Natalie M. | last19=Borucki | first19=William J. | last20=Brown | first20=Timothy M. | last21=Caldwell | first21=Douglas A. | last22=Christiansen | first22=Jessie L. | last23=Deming | first23=Drake | last24=Fabrycky | first24=Daniel C. | last25=Ford | first25=Eric B. | last26=Gilliland | first26=Ronald L. | last27=Gillon | first27=Michaël | last28=Haas | first28=Michaël R. | last29=Jenkins | first29=Jon M. | last30=Kinemuchi | first30=Karen | last31=Koch | first31=David | last32=Lissauer | first32=Jack J. | last33=Lucas | first33=Philip | last34=Mullally | first34=Fergal | last35=MacQueen | first35=Phillip J. | last36=Marcy | first36=Geoffrey W. | last37=Sasselov | first37=Dimitar D. | last38=Seager | first38=Sara | last39=Still | first39=Martin | last40=Tenenbaum | first40=Peter | last41=Uddin | first41=Kamal | last42=Winn | first42=Joshua N. | display-authors=1 | journal=The Astrophysical Journal Supplement Series | volume=197 | issue=1 | at=14 | year=2011 | arxiv=1107.5750 | bibcode=2011ApJS..197...14D | bibcode-access=free | doi=10.1088/0067-0049/197/1/14 | doi-access=free }}

{{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 | bibcode-access=free | doi=10.1088/2041-8205/775/1/L11 | doi-access=free }}

{{cite journal | title=Activity and Rotation of Kepler-17 | last1=Valio | first1=Adriana | last2=Estrela | first2=Raissa | last3=Netto | first3=Yuri | last4=Bravo | first4=J. P. | last5=Medeiros | first5=J. R. de | display-authors=1 | journal=The Astrophysical Journal | volume=835 | issue=2 | at=294 | year=2017 | arxiv=1702.02213 | bibcode=2017ApJ...835..294V | bibcode-access=free | doi=10.3847/1538-4357/835/2/294 | doi-access=free }}

}}

External links

[https://web.archive.org/web/20111113211334/http://exoplanet.eu/star.php?st=Kepler-17&showPubli=yes&sortByDate Exoplanet EU]

Category:Cygnus (constellation)

Category:G-type main-sequence stars

Category:Planetary transit variables

203

Category:Planetary systems with one confirmed planet

J19533486+4748540