Kepler-411#Planetary system

The primary star's surface temperature is {{val|4773|ul=K|fmt=commas}}. Kepler-411A is similar to the Sun in its concentration of heavy elements, with a metallicity Fe/H index of 0.11{{±|0.1}}, but is much younger at an age of 212{{±|31}} million years.

Kepler-411A exhibits significant starspot activity, with starspots covering 1.7{{±|0.3|0.2}}% of the stellar surface.{{citation|arxiv=2002.09135|year=2020|title=A relationship between stellar age and spot coverage|doi=10.3847/1538-4357/ab79a0|last1=Morris|first1=Brett M.|journal=The Astrophysical Journal|volume=893|issue=1|page=67|bibcode=2020ApJ...893...67M|s2cid=211252547 |doi-access=free }} Darker starspots are concentrated around the equator of the star. Kepler-411A exhibits differential rotation, but with smaller amount of differential shear compared to the Sun.

The companion Kepler-411B is {{val|533|ul=au}} away from Kepler-411A. It is a red dwarf and a flare star.{{cite journal |bibcode=2021MNRAS.502.2033J |title=Stellar flares from blended and neighbouring stars in Kepler short cadence observations |last1=Jackman |first1=James A. G. |last2=Shkolnik |first2=Evgenya |last3=Loyd |first3=R. O. Parke |journal=Monthly Notices of the Royal Astronomical Society |year=2021 |volume=502 |issue=2 |page=2033 |doi=10.1093/mnras/stab166 |doi-access=free |arxiv=2101.07269 }}

In 2013, one planet, named Kepler-411b, was discovered,{{citation|arxiv=1309.7097|year=2013|title=Influence of Stellar Multiplicity On Planet Formation. I. Evidence of Suppressed Planet Formation Due to Stellar Companions Within 20 AU and Validation of Four Planets From the Kepler Multiple Planet Candidates|doi=10.1088/0004-637X/783/1/4|last1=Wang|first1=Ji|last2=Xie|first2=Ji-Wei|last3=Barclay|first3=Thomas|last4=Fischer|first4=Debra A.|journal=The Astrophysical Journal|volume=783|issue=1 |page=4|bibcode=2014ApJ...783....4W |s2cid=119214390}} followed by planet Kepler-411c in 2016. Third planet in system detected by transit method, d, along with e detected by radial velocity method, were discovered in 2019.{{citation|arxiv=1902.09719|year=2019|title=Kepler-411: a four-planet system with an active host star|doi=10.1051/0004-6361/201834275|last1=Sun|first1=L.|last2=Ioannidis|first2=P.|last3=Gu|first3=S.|last4=Schmitt|first4=J. H. M. M.|last5=Wang|first5=X.|last6=Kouwenhoven|first6=M. B. N.|journal=Astronomy & Astrophysics|volume=624|pages=A15|bibcode=2019A&A...624A..15S|s2cid=102481339}}{{citation|arxiv=2006.01102|year=2020|title=Masses for the seven planets in K2-32 and K2-233. Four diverse planets in resonant chain and the first young rocky worlds|doi=10.1051/0004-6361/202037896|last1=Lillo-Box|first1=J.|last2=Lopez|first2=T. A.|last3=Santerne|first3=A.|last4=Nielsen|first4=L. D.|last5=Barros|first5=S. C. C.|last6=Deleuil|first6=M.|last7=Acuña|first7=L.|last8=Mousis|first8=O.|last9=Sousa|first9=S. G.|last10=Adibekyan|first10=V.|last11=Armstrong|first11=D. J.|last12=Barrado|first12=D.|last13=Bayliss|first13=D.|last14=Brown|first14=D. J. A.|last15=Demangeon|first15=O. D. S.|last16=Dumusque|first16=X.|last17=Figueira|first17=P.|last18=Hojjatpanah|first18=S.|last19=Osborn|first19=H. P.|last20=Santos|first20=N. C.|last21=Udry|first21=S.|journal=Astronomy & Astrophysics|volume=A48|page=640|bibcode=2020A&A...640A..48L|s2cid=219176756}}

{{OrbitboxPlanet begin

| name = Kepler-411

| table_ref =

}}

{{OrbitboxPlanet

| exoplanet = b{{Cite encyclopedia |title=The Extrasolar Planet Encyclopaedia — Kepler-411 b |url=https://exoplanet.eu/catalog/kepler_411_b--1407/ |encyclopedia=Extrasolar Planets Encyclopaedia |access-date=2022-09-27 }}

| mass = 0.08055{{±|0.00818}}

| radius = 0.214{{±|0.005}}

| semimajor = 0.0375{{±|0.0008}}

| period = 3.005156{{±|0.000002}}

| eccentricity = 0.146{{±|0.004|0.005}}

| inclination = 87.4{{±|0.1}}

}}

{{OrbitboxPlanet

| exoplanet = c{{Cite encyclopedia |title=The Extrasolar Planet Encyclopaedia — Kepler-411 c |url=https://exoplanet.eu/catalog/kepler_411_c--3210/ |encyclopedia=Extrasolar Planets Encyclopaedia |access-date=2022-09-27 }}

| mass = 0.08306{{±|0.01856}}

| radius = 0.394{{±|0.006}}

| semimajor = 0.0739{{±|0.001}}

| period = {{val|7.834436247|0.000001137|fmt=commas}}

| eccentricity = 0.108{{±|0.003|0.004}}

| inclination = 88.61{{±|0.04}}

}}

{{OrbitboxPlanet

| exoplanet = d{{Cite encyclopedia |title=The Extrasolar Planet Encyclopaedia — Kepler-411 d |url=https://exoplanet.eu/catalog/kepler_411_d--7030/ |encyclopedia=Extrasolar Planets Encyclopaedia |access-date=2022-09-27 }}

| mass = 0.04782{{±|0.01605}}

| radius = 0.296{{±|0.009}}

| semimajor = 0.279{{±|0.004}}

| period = {{val|58.02023116|0.00004203|fmt=commas}}

| eccentricity = 0.128{{±|0.003}}

| inclination = 89.43{{±|0.02}}

}}

{{OrbitboxPlanet

| exoplanet = e{{Cite encyclopedia |title=The Extrasolar Planet Encyclopaedia — Kepler-411 e |url=https://exoplanet.eu/catalog/kepler_411_e--7031/ |encyclopedia=Extrasolar Planets Encyclopaedia |access-date=2022-09-27 }}

| mass = 0.03398{{±|0.00346}}

| radius =

| semimajor = 0.186{{±|0.003}}

| period = 31.509728{{±|0.000085}}

| eccentricity = 0.016{{±|0.002|0.001}}

| inclination = 88.04{{±|0.02}}

}}

{{Orbitbox end}}

{{reflist|refs=

{{cite journal | title=Revisiting the Kepler field with TESS: Improved ephemerides using TESS 2 min data | last1=Battley | first1=Matthew P | last2=Kunimoto | first2=Michelle | last3=Armstrong | first3=David J | last4=Pollacco | first4=Don | display-authors=1 | journal=Monthly Notices of the Royal Astronomical Society | date=10 March 2021 | volume=503 | issue=3 | pages=4092–4104 | arxiv=2103.03259 | bibcode=2021MNRAS.503.4092B | bibcode-access=free | doi=10.1093/mnras/stab701 | doi-access=free }}

}}

{{Sky|19|10|25.3471|+|49|31|23.7119}}

{{Stars of Cygnus}}

Category:Cygnus (constellation)

Category:Planetary transit variables

Category:K-type main-sequence stars

Category:Planetary systems with four confirmed planets

J19102533+4931237

1781

Category:Binary stars