Kepler-385: Difference between revisions
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{{Starbox begin}} |
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{{Starbox observe |
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| epoch = [[J2000]] |
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| constell = [[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> |
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| ra = {{RA|19|37|21.23819}}<ref name="GaiaDR3"/> |
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| dec = {{DEC|+50|20|11.5477}}<ref name="GaiaDR3"/> |
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| appmag_v = 15.76<ref name="NASAExoplanetArchive"/> |
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}} |
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{{Starbox astrometry |
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| radial_v = |
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| prop_mo_ra = 2.738 |
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| prop_mo_dec = -5.398 |
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| pm_footnote = <ref name="GaiaDR3"/> |
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| parallax = 0.6597 |
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| p_error = 0.0183 |
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| parallax_footnote = <ref name="GaiaDR3"/> |
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| absmag_v = |
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| absmag_bol = |
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}} |
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{{Starbox detail |
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| source = <ref name="Lissauer2023"/> |
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| mass = {{val|0.99|0.03}} |
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| radius = {{val|1.09|0.05}} |
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| luminosity = |
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| gravity = {{val|4.19|0.10}} |
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| temperature = {{val|5835|64}} |
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| metal_fe = {{val|0.010|0.037}} |
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| rotation = |
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| rotational_velocity = |
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| age_gyr = |
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}} |
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{{Starbox catalog |
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| names = {{odlist | 2MASS = J19372123+5020115 | Kepler = 385 | KIC = 11968463 | KOI = 2433 | TIC = 27082352}}<ref name="SIMBAD"/> |
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}} |
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{{Starbox reference |
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| Simbad = Kepler-385 |
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}} |
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{{Starbox end}} |
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'''Kepler-385''' (also designated '''KOI-2433''') is an [[F-type main-sequence star]] located about {{convert|4900|ly|pc|lk=on|abbr=off}} away from [[Earth]] in the [[constellation]] of [[Cygnus (constellation)|Cygnus]]. The [[star]] is 10% larger and 5% [[Heat|hotter]] than the [[Sun]]. The star has at least three, and potentially up to seven, [[exoplanet]]s discovered [[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> |
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{{Infobox star|name=Kepler-385|constellation=Cygnus|galaxy=[[Milky way galaxy]]|ascension=19h37m21.24s|declination=+50d20m11.46s|distance=4627.548883 [[light years]]|spectral=[[F-type main sequence star]]|mass=1.05 [[solar mass]]|radius=1.157 [[Solar radii]]}} |
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The star has a [[mass]] of 1.05 [[solar mass]]es, a [[radius]] of 1.157 [[Solar radius|solar radii]], a [[temperature]] of 5829 [[Kelvin]] and a [[luminosity]] of 1.39 times the [[solar luminosity]].<ref name="NASAExoplanetArchive"/> |
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'''Kepler-385''' (also designated as '''KOI-2433''') is a [[F-type main-sequence star|F-type main sequence]] [[star]] located 4627.548883 [[Light-year|light years]] (1432.61 [[Parsec|parsecs]]) away from [[earth]] in the [[constellation]] of [[Cygnus (constellation)|Cygnus]]. The [[star]] is 10% larger and 5% [[Heat|hotter]] than the [[sun]]. The [[star]] has up to six [[Exoplanet|exoplanets]] discovered [[Orbit|orbiting]] it.<ref>{{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><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> |
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==Planetary system== |
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The star has a [[mass]] of 1.05 [[Solar mass|solar masses]], a [[Radius|radii]] of 1.157 [[Solar radius|solar radii]], a [[temperature]] of 5829 [[Kelvin]] and a [[solar luminosity]] of 0.1437374 [[solar luminosity]].<ref name=":0">{{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> |
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Kepler-385 was observed by the [[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"/> |
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{| class="wikitable" |
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|+The Kepler-385 planetary system<ref name=":0" /> |
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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 [[Kepler-90]] - a confirmed eight-planet system - as the Kepler system with the most planet candidates. |
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!Companion |
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(in order from star) |
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{{Orbitbox planet begin |
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![[Mass]] |
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| table_ref = <ref name="NASAExoplanetArchive"/><ref name="Lissauer2023"/> |
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![[Semi-major and semi-minor axes|Semi major axis]] |
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}} |
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([[Astronomical unit|AU]]) |
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{{Orbitbox planet hypothetical |
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![[Orbital period]] |
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| exoplanet = .08 |
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([[Day|Days]]) |
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| mass_earth = |
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![[Orbital eccentricity|Eccentircy]] |
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| radius_earth = {{val|1.206|0.110|0.101}} |
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![[Orbital inclination|Inclination]] |
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| semimajor = |
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![[Radius|Radii]] |
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| period = {{val|3.37376|0.00003}} |
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([[Earth radius|Earth radii]]) |
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| eccentricity = |
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|- |
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| inclination = |
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|[[Kepler-385 b]] |
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}} |
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|? |
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{{Orbitbox planet hypothetical |
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|0.097 |
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| exoplanet = .06 |
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|10.043686 [[Day|days]] |
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| mass_earth = |
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|? |
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| radius_earth = {{val|1.441|0.129|0.106}} |
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|? |
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| semimajor = 0.067 |
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|2.73 |
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| period = {{val|6.06325|0.00006}} |
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|- |
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| eccentricity = |
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|[[Kepler-385 c]] |
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| inclination = |
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|13.2 |
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}} |
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|0.127 |
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{{Orbitbox planet |
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|13.163161 days |
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| exoplanet = b |
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|? |
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| mass_earth = |
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|? |
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| radius_earth = {{val|2.313|0.210|0.162}} |
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|? |
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| semimajor = 0.097 |
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|- |
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| period = {{val|10.04381|0.00008}} |
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|[[Kepler-385 d]] |
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| eccentricity = |
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|? |
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| inclination = |
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|? |
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}} |
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|51.4159 days |
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{{Orbitbox planet |
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|? |
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| exoplanet = c |
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|? |
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| mass_earth = |
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|2.618644 |
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| radius_earth = {{val|2.406|0.549|0.146}} |
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|- |
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| semimajor = 0.127 |
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|[[Kepler-385 f]]? |
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| period = {{val|15.16213|0.00014}} |
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| |
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| eccentricity = |
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|0.0671 |
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| inclination = |
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|6.0633 days |
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}} |
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|0 |
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{{Orbitbox planet hypothetical |
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|89.95° |
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| exoplanet = .04 |
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|1.64 |
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| mass_earth = |
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|- |
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| radius_earth = {{val|1.903|0.184|0.142}} |
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|[[Kepler-385 g]]? |
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| semimajor = 0.189 |
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| |
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| period = {{val|27.90426|0.00040}} |
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| |
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| eccentricity = |
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|27.904 days |
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| inclination = |
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|0 |
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}} |
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|87.79° |
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{{Orbitbox planet |
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| |
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| exoplanet = d |
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|- |
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| mass_earth = |
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|[[Kepler-385 h]]? |
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| radius_earth = {{val|2.423|0.210|0.161}} |
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| |
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| semimajor = 0.302 |
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| |
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| period = {{val|56.41581|0.00135}} |
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|86.481 days |
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| eccentricity = |
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|0 |
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| inclination = |
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|88.4° |
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}} |
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| |
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{{Orbitbox planet hypothetical |
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|} |
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| exoplanet = .07 |
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The [[exoplanet]] Kepler-385 e was falsely identified as an exoplanet while Kepler-385 f, Kepler-385-g and Kepler-385 h are candidate exoplanets. |
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| mass_earth = |
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| radius_earth = {{val|2.252|0.199}} |
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| semimajor = 0.402 |
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| period = {{val|86.43086|0.00205}} |
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| eccentricity = |
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| inclination = |
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}} |
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{{Orbitbox end}} |
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== Reference == |
== Reference == |
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{{reflist |
{{reflist|refs= |
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<ref name="SIMBAD">{{cite simbad |title=Kepler-385 |access-date=8 November 2023}}</ref> |
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<ref name="GaiaDR3">{{Cite Gaia DR3|2135203000771400320}}</ref> |
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<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> |
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<ref name="Rowe2014">{{cite journal |last1=Rowe |first1=Jason F. |last2=Bryson |first2=Stephen T. |display-authors=etal |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=[[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> |
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<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=[[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> |
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<ref name="Lissauer2023">{{cite journal |last1=Lissauer |first1=Jack J. |last2=Rowe |first2=Jason F. |display-authors=etal |date=November 2023 |title=Updated Catalog of Kepler Planet Candidates: Focus on Accuracy and Orbital Periods |journal=[[The Planetary Science Journal]] |volume= |issue= |pages= |doi= |arxiv=2311.00238}} Data is available [https://kona.ubishops.ca/architecture/ here].</ref> |
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<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> |
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}} |
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{{Cygnus (constellation)}} |
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[[Category:F-type main-sequence stars]] |
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[[Category:Cygnus (constellation)]] |
[[Category:Cygnus (constellation)]] |
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[[Category:F-type main-sequence stars]] |
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[[Category:Planetary systems with three confirmed planets]] |
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[[Category:2MASS objects|J19372123+5020115]] |
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[[Category:Kepler objects of interest|2433]] |
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Revision as of 16:22, 8 November 2023
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus[1] |
| Right ascension | 19h 37m 21.23819s[2] |
| Declination | +50° 20′ 11.5477″[2] |
| Apparent magnitude (V) | 15.76[3] |
| Astrometry | |
| Proper motion (μ) | RA: 2.738 mas/yr[2] Dec.: -5.398 mas/yr[2] |
| Parallax (π) | 0.6597 ± 0.0183 mas[2] |
| Distance | 4,900 ± 100 ly (1,520 ± 40 pc) |
| Details[4] | |
| Mass | 0.99±0.03 M☉ |
| Radius | 1.09±0.05 R☉ |
| Surface gravity (log g) | 4.19±0.10 cgs |
| Temperature | 5835±64 K |
| Metallicity [Fe/H] | 0.010±0.037 dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
Kepler-385 (also designated KOI-2433) is an F-type main-sequence star located about 4,900 light-years (1,500 parsecs) away from Earth in the constellation of Cygnus. The star is 10% larger and 5% hotter than the Sun. The star has at least three, and potentially up to seven, exoplanets discovered orbiting it.[6][7]
The star has a mass of 1.05 solar masses, a radius of 1.157 solar radii, a temperature of 5829 Kelvin and a luminosity of 1.39 times the solar luminosity.[3]
Planetary system
Kepler-385 was observed by the 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,[8] and a third, KOI-2433.03, was confirmed in 2020 as Kepler-385 d.[9] 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.[4]
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.[4][6] Kepler-385 is tied with Kepler-90 - a confirmed eight-planet system - as the Kepler system with the most planet candidates.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| .08 (unconfirmed) | — | — | 3.37376±0.00003 | — | — | 1.206+0.110 −0.101 R🜨 |
| .06 (unconfirmed) | — | 0.067 | 6.06325±0.00006 | — | — | 1.441+0.129 −0.106 R🜨 |
| b | — | 0.097 | 10.04381±0.00008 | — | — | 2.313+0.210 −0.162 R🜨 |
| c | — | 0.127 | 15.16213±0.00014 | — | — | 2.406+0.549 −0.146 R🜨 |
| .04 (unconfirmed) | — | 0.189 | 27.90426±0.00040 | — | — | 1.903+0.184 −0.142 R🜨 |
| d | — | 0.302 | 56.41581±0.00135 | — | — | 2.423+0.210 −0.161 R🜨 |
| .07 (unconfirmed) | — | 0.402 | 86.43086±0.00205 | — | — | 2.252±0.199 R🜨 |
Reference
- ^ "Finding the constellation which contains given sky coordinates". djm.cc. 2 August 2008.
- ^ a b c d Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b c "Kepler-385 | NASA Exoplanet Archive". exoplanetarchive.ipac.caltech.edu. Retrieved 2023-11-07.
- ^ a b c d Lissauer, Jack J.; Rowe, Jason F.; et al. (November 2023). "Updated Catalog of Kepler Planet Candidates: Focus on Accuracy and Orbital Periods". The Planetary Science Journal. arXiv:2311.00238. Data is available here.
- ^ "Kepler-385". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 8 November 2023.
- ^ a b "Scorching, Seven-Planet System Revealed by New Kepler Exoplanet List - NASA". 2023-11-02. Retrieved 2023-11-07.
- ^ Anderson, Natali (2023-11-06). "Kepler-385 Hosts Seven Large Exoplanets, Astronomers Say | Sci.News". Sci.News: Breaking Science News. Retrieved 2023-11-07.
- ^ Rowe, Jason F.; Bryson, Stephen T.; et al. (March 2014). "Validation of Kepler's Multiple Planet Candidates. III. Light Curve Analysis and Announcement of Hundreds of New Multi-planet Systems". The Astrophysical Journal. 784 (1): 45. arXiv:1402.6534. Bibcode:2014ApJ...784...45R. doi:10.1088/0004-637X/784/1/45.
- ^ Armstrong, David J.; Gamper, Jevgenij; Damoulas, Theodoros (July 2021). "Exoplanet validation with machine learning: 50 new validated Kepler planets". Monthly Notices of the Royal Astronomical Society. 504 (4): 5327–5344. arXiv:2008.10516. Bibcode:2021MNRAS.504.5327A. doi:10.1093/mnras/staa2498.
{{cite journal}}: CS1 maint: unflagged free DOI (link)