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an open source database of all discovered extrasolar planets

Kepler-186

The planetary system Kepler-186 hosts at least 5 planets.

  System parameters
Primary system name Kepler-186
Alternative system names KOI-571, KIC 8120608
Right ascension 19 54 36.6536
Declination +43 57 18.0258
Distance [parsec] 151±18
Distance [lightyears] 492±59
Number of stars in system 1
Number of planets in system 5

ArchitectureArchitecture of the system

This list shows all planetary and stellar components in the system. It gives a quick overview of the hierarchical architecture.

  •  Kepler-186, stellar object
    •  Kepler-186 c, planet, semi-major axis: 0.052±0.007 AU
      •  Kepler-186 d, planet, semi-major axis: 0.078±0.010 AU
        •  Kepler-186 b, planet, semi-major axis: 0.034±0.005 AU
          •  Kepler-186 e, planet, semi-major axis: 0.110±0.015 AU
            •  Kepler-186 f, planet, semi-major axis: 0.36±0.05 AU

            PlanetsPlanets in the system

            This table lists all planets in the system Kepler-186.

              Kepler-186 c Kepler-186 d Kepler-186 b Kepler-186 e Kepler-186 f
            Alternative planet names KOI-571 c, KOI-571.01, KIC 8120608 c, KIC 8120608.01, Gaia DR2 2079000330051813504 c KOI-571 d, KOI-571.02, KIC 8120608 d, KIC 8120608.02, Gaia DR2 2079000330051813504 d KOI-571 b, KOI-571.03, KIC 8120608 b, KIC 8120608.03, Gaia DR2 2079000330051813504 b KOI-571 e, KOI-571.04, KIC 8120608 e, KIC 8120608.04, Gaia DR2 2079000330051813504 e KOI-571 f, KOI-571.05, KIC 8120608 f, KIC 8120608.05, Gaia DR2 2079000330051813504 f
            Description Kepler-186 c has been discovered by the Kepler spacecraft and was originally classified as a planet candidate. A new statistical analysis led by a team at NASA Ames Research Center has validated the planet with more than 99 percent confidence. Although many parameters of Kepler-186 c are still unknown, the object is highly unlikely to be a false positive. Kepler-186 d has been discovered by the Kepler spacecraft and was originally classified as a planet candidate. A new statistical analysis led by a team at NASA Ames Research Center has validated the planet with more than 99 percent confidence. Although many parameters of Kepler-186 d are still unknown, the object is highly unlikely to be a false positive. Kepler-186 b has been discovered by the Kepler spacecraft and was originally classified as a planet candidate. A new statistical analysis led by a team at NASA Ames Research Center has validated the planet with more than 99 percent confidence. Although many parameters of Kepler-186 b are still unknown, the object is highly unlikely to be a false positive. Kepler-186 e has been discovered by the Kepler spacecraft and was originally classified as a planet candidate. A new statistical analysis led by a team at NASA Ames Research Center has validated the planet with more than 99 percent confidence. Although many parameters of Kepler-186 e are still unknown, the object is highly unlikely to be a false positive. Kepler-186 f is the first Earth-size planet in the habitable zone. The mass of the planet is not known, therefore one can only speculate about the planet's composition. If it is rocky, it could have liquid water on its surface. Kepler-186 orbits an M-dwarf, a star that is much cooler than the Sun. This is why the system's habitable zone is much closer to the star than in the Solar system.
            Lists Confirmed planets
            Mass [Mjup] N/A N/A N/A N/A N/A
            Mass [Mearth] N/A N/A N/A N/A N/A
            Radius [Rjup] 0.098±0.011 0.128±0.015 0.098±0.011 0.116±0.014 0.0990
            Radius [Rearth] 1.09±0.12 1.43±0.16 1.09±0.12 1.30±0.15 1.110
            Orbital period [days] 7.2673±0.0000 13.3430±0.0000 3.8868±0.0000 22.4077±0.0001 N/A
            Semi-major axis [AU] 0.052±0.007 0.078±0.010 0.034±0.005 0.110±0.015 0.36±0.05
            Eccentricity N/A N/A N/A N/A N/A
            Equilibrium temperature [K] N/A N/A N/A N/A N/A
            Discovery method transit
            Discovery year 2014
            Last updated [yy/mm/dd] 14/04/17 14/04/17 14/04/17 14/04/17 14/04/18

            starStars in the system

            This table lists all stars in the system Kepler-186.

              Kepler-186
            Alternative star names KOI-571, KIC 8120608, 2MASS J19543665+4357180, Gaia DR2 2079000330051813504
            Mass [MSun] 0.48±0.06
            Radius [RSun] 0.47±0.05
            Age [Gyr] N/A
            Metallicity [Fe/H] -0.28±0.10
            Temperature [K] 3788±54
            Spectral type N/A
            Visual magnitude N/A

            Planet sizes

            The following plot shows the approximate sizes of the planets in this system The Solar System planets are shown as a comparison. Note that unless the radius has been determined through a transit observation, this is only an approximation (see Lissauer et al. 2011b).

            PlutoMercuryMarsVenusEarthNeptuneUranusSaturnJupiterKepler-186 cKepler-186 dKepler-186 bKepler-186 eKepler-186 f

            Habitable zone

            The following plot shows the approximate location of the planets in this system with respect to the habitable zone (green) and the size of the star (red). This is only an estimate, using the star's spectral type and mass. Note that if no green band is shown in the plot, then the planet's orbit is far outside the habitable zone. The equations of Selsis, Kasting et al are used to draw the inner and outer boundaries.

            Habitable zoneKepler-186 cKepler-186 dKepler-186 bKepler-186 eKepler-186 f

            referencesScientific references and contributors

            Links to scientific papers and other data sources

            history http://simbad.u-strasbg.fr/simbad
            history http://www.sciencemag.org/content/344/6181/277
            history http://exoplanets.eu/

            This table lists all links which are relevant to this particular system. Note that this is just a summary. More references to the scientific publications and comments can be found in the commit messages. To see these, head over the github or click here to directly go to the git blame output of this system. In the left column of the output you can see the commit message corresponding to each parameter. It also lists the date of the last commit and the person making the changes. Within the commit message, you will find a link to the scientific publication where the data is taken from. Note that this is a new feature and not all system parameters might have a reference associated with it yet. Please help making this catalogue better and contribute data or references!

            Open Exoplanet Catalogue contributors

            Contributor E-mail Number of commits
            Andrew Tribick ajtribick(at)googlemail.com 1
            Hanno Rein hanno(at)hanno-rein.de 10
            Paul Zwerger 1
            Ryan Varley ryanjvarley(at)gmail.com 2

            This table lists all people who have contributed to the Open Exoplanet Catalogue. Please consider contributing! Click here to find out how. You can also view all commits contributing to this file on github.

            xmlData download

            You can download the xml file corresponding to this planetary system, which is part of the Open Exoplanet Catalogue. All information on this page has been directly generated from this XML file. You can also download the entire catalogue over at github. If you prefer to download the dataset as an ASCII tables, you might find the oec_tables repository useful.

            correctionsCorrections

            If you spot an error or if you can contribute additional data to this entry, please send an e-mail to exoplanet@hanno-rein.de. Please include the corrected xml file and a reference to where the new data is coming from, ideally a scientific paper. If you are fluent with git and github, you can also create a pull request or open an issue on the Open Exoplanet Catalogue repository. Please include the reference to the relevant scientific paper in your commit message.