View source for Astronomy:Kepler-385

{{Short description|F-type main-sequence star in the constellation Cygnus}}
{{Starbox begin}}
{{Starbox observe
| epoch = [[Astronomy:J2000|J2000]]
| constell = [[Astronomy:Cygnus (constellation)|Cygnus]]<ref>{{cite web |url=http://djm.cc/constellation.html |title=Finding the constellation which contains given sky coordinates |date=2 August 2008 |website=djm.cc}}</ref>
| ra = {{RA|19|37|21.23819}}<ref name="GaiaDR3"/>
| dec = {{DEC|+50|20|11.5477}}<ref name="GaiaDR3"/>
| appmag_v = 15.76<ref name="NASAExoplanetArchive"/>
}}
{{Starbox astrometry
| radial_v           = 
| prop_mo_ra         = 2.738
| prop_mo_dec        = -5.398
| pm_footnote        = <ref name="GaiaDR3"/>
| parallax           = 0.6597
| p_error            = 0.0183
| parallax_footnote  = <ref name="GaiaDR3"/>
| absmag_v           = 
| absmag_bol         = 
}}
{{Starbox detail
| source                 = <ref name="Lissauer2023"/>
| mass                   = {{val|0.99|0.03}}
| radius                 = {{val|1.09|0.05}}
| luminosity             = 
| gravity                = {{val|4.19|0.10}}
| temperature            = {{val|5835|64}}
| metal_fe               = {{val|0.010|0.037}}
| rotation               = 
| rotational_velocity    = 
| age_gyr                = 
}}
{{Starbox catalog
| names = {{odlist | 2MASS = J19372123+5020115 | Kepler = 385 | KIC = 11968463 | KOI = 2433 | TIC = 27082352}}<ref name="SIMBAD"/>
}}
{{Starbox reference
| Simbad = Kepler-385
}}
{{Starbox end}}

'''Kepler-385''' (also designated '''KOI-2433''') is an [[Astronomy:F-type main-sequence star|F-type main-sequence star]] located about {{convert|4900|ly|pc|lk=on|abbr=off}} away from [[Astronomy:Earth|Earth]] in the [[Astronomy:Constellation|constellation]] of [[Astronomy:Cygnus (constellation)|Cygnus]]. The [[Astronomy:Star|star]] is 10% larger and 5% [[Physics:Heat|hotter]] than the [[Astronomy:Sun|Sun]]. The star has at least three, and potentially up to seven, [[Astronomy:Exoplanet|exoplanet]]s discovered [[Physics:Orbit|orbiting]] it.<ref name="NASA-20231102"/><ref>{{Cite web |last=Anderson |first=Natali |date=2023-11-06 |title=Kepler-385 Hosts Seven Large Exoplanets, Astronomers Say {{!}} Sci.News |url=https://www.sci.news/astronomy/kepler-385-exoplanets-12423.html |access-date=2023-11-07 |website=Sci.News: Breaking Science News |language=en-US}}</ref>

The star has a [[Physics:Mass|mass]] of 1.05 [[Astronomy:Solar mass|solar mass]]es, a [[Radius|radius]] of 1.157 [[Astronomy:Solar radius|solar radii]], a [[Physics:Temperature|temperature]] of 5829 [[Kelvin]] and a [[Astronomy:Luminosity|luminosity]] of 1.39 times the [[Astronomy:Solar luminosity|solar luminosity]].<ref name="NASAExoplanetArchive"/>

==Planetary system==
Kepler-385 was observed by the [[Astronomy:Kepler space telescope|Kepler space telescope]], which initially detected a total of seven planet candidates. Two of these, KOI-2433.01 & .02, were confirmed in 2014 as Kepler-385 b & c,<ref name="Rowe2014"/> and a third, KOI-2433.03, was confirmed in 2020 as Kepler-385 d.<ref name="Armstrong2021"/> These confirmations were part of studies using statistical validation to confirm large numbers of Kepler candidates. The candidate KOI-2433.05 was shown to be a false positive.<ref name="Lissauer2023"/>

In 2023, a new updated catalog of Kepler candidates was presented, including an eighth candidate around Kepler-385, KOI-2433.08, making it a candidate seven-planet system.<ref name="Lissauer2023"/><ref name="NASA-20231102"/> Kepler-385 is tied with [[Astronomy:Kepler-90|Kepler-90]] - a confirmed eight-planet system - as the Kepler system with the most planet candidates.

{{Orbitbox planet begin
| table_ref = <ref name="NASAExoplanetArchive"/><ref name="Lissauer2023"/>
}}
{{Orbitbox planet hypothetical
| exoplanet = .08
| mass_earth = 
| radius_earth = {{val|1.206|0.110|0.101}}
| semimajor = 
| period = {{val|3.37376|0.00003}}
| eccentricity = 
| inclination = 
}}
{{Orbitbox planet hypothetical
| exoplanet = .06
| mass_earth = 
| radius_earth = {{val|1.441|0.129|0.106}}
| semimajor = 0.067
| period = {{val|6.06325|0.00006}}
| eccentricity = 
| inclination = 
}}
{{Orbitbox planet
| exoplanet = b
| mass_earth = 
| radius_earth = {{val|2.313|0.210|0.162}}
| semimajor = 0.097
| period = {{val|10.04381|0.00008}}
| eccentricity = 
| inclination = 
}}
{{Orbitbox planet
| exoplanet = c
| mass_earth = 
| radius_earth = {{val|2.406|0.549|0.146}}
| semimajor = 0.127
| period = {{val|15.16213|0.00014}}
| eccentricity = 
| inclination = 
}}
{{Orbitbox planet hypothetical
| exoplanet = .04
| mass_earth = 
| radius_earth = {{val|1.903|0.184|0.142}}
| semimajor = 0.189
| period = {{val|27.90426|0.00040}}
| eccentricity = 
| inclination = 
}}
{{Orbitbox planet
| exoplanet = d
| mass_earth = 
| radius_earth = {{val|2.423|0.210|0.161}}
| semimajor = 0.302
| period = {{val|56.41581|0.00135}}
| eccentricity = 
| inclination = 
}}
{{Orbitbox planet hypothetical
| exoplanet = .07
| mass_earth = 
| radius_earth = {{val|2.252|0.199}}
| semimajor = 0.402
| period = {{val|86.43086|0.00205}}
| eccentricity = 
| inclination = 
}}
{{Orbitbox end}}

== Reference ==
{{reflist|refs=

<ref name="SIMBAD">{{cite simbad |title=Kepler-385 |access-date=8 November 2023}}</ref>

<ref name="GaiaDR3">{{Cite Gaia DR3|2135203000771400320}}</ref>

<ref name="NASAExoplanetArchive">{{Cite web |title=Kepler-385 {{!}} NASA Exoplanet Archive |url=https://exoplanetarchive.ipac.caltech.edu/overview/Kepler-385 |access-date=2023-11-07 |website=exoplanetarchive.ipac.caltech.edu}}</ref>

<ref name="Rowe2014">{{cite journal |last1=Rowe |first1=Jason F. |last2=Bryson |first2=Stephen T. |display-authors=0 |date=March 2014 |title=Validation of Kepler's Multiple Planet Candidates. III. Light Curve Analysis and Announcement of Hundreds of New Multi-planet Systems |journal=[[Astronomy:The Astrophysical Journal|The Astrophysical Journal]] |volume=784 |issue=1 |pages=45 |doi=10.1088/0004-637X/784/1/45 |arxiv=1402.6534 |bibcode=2014ApJ...784...45R}}</ref>

<ref name="Armstrong2021">{{cite journal |last1=Armstrong |first1=David J. |last2=Gamper |first2=Jevgenij |last3=Damoulas |first3=Theodoros |date=July 2021 |title=Exoplanet validation with machine learning: 50 new validated Kepler planets |journal=[[Organization:Monthly Notices of the Royal Astronomical Society|Monthly Notices of the Royal Astronomical Society]] |volume=504 |issue=4 |pages=5327-5344 |doi=10.1093/mnras/staa2498 |arxiv=2008.10516 |bibcode=2021MNRAS.504.5327A}}</ref>

<ref name="Lissauer2023">{{cite journal |last1=Lissauer |first1=Jack J. |last2=Rowe |first2=Jason F. |display-authors=0 |date=November 2023 |title=Updated Catalog of Kepler Planet Candidates: Focus on Accuracy and Orbital Periods |journal=[[Astronomy:The Planetary Science Journal|The Planetary Science Journal]] |volume= |issue= |pages= |doi= |arxiv=2311.00238}} Data is available [https://kona.ubishops.ca/architecture/ here].</ref>

<ref name="NASA-20231102">{{Cite web |date=2023-11-02 |title=Scorching, Seven-Planet System Revealed by New Kepler Exoplanet List - NASA |url=https://www.nasa.gov/general/scorching-seven-planet-system-revealed-by-new-kepler-exoplanet-list/ |access-date=2023-11-07 |language=en-US}}</ref>

}}

{{Cygnus (constellation)}}

[[Category:Cygnus (constellation)]]
[[Category:F-type main-sequence stars]]
[[Category:2MASS objects|J19372123+5020115]]

{{Sourceattribution|Kepler-385}}