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an open source database of all discovered extrasolar planets

KOI-314

The planetary system KOI-314 hosts at least 3 planets.

  System parameters
Primary system name KOI-314
Alternative system names Kepler-138, KIC 7603200
Right ascension 19 21 31
Declination +43 17 34
Distance [parsec] 114.1edit
Distance [lightyears] 372
Number of stars in system 1
Number of planets in system 3

ArchitectureArchitecture of the system

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

  •  KOI-314, stellar object
    •  KOI-314 b, planet, semi-major axis: 0.091±0.003 AU
      •  KOI-314 c, planet, semi-major axis: 0.128±0.004 AU
        •  Kepler-138 b, planet, semi-major axis: 0.075±0.003 AU

        PlanetsPlanets in the system

        This table lists all planets in the system KOI-314.

          KOI-314 b KOI-314 c Kepler-138 b
        Alternative planet names Kepler-138 c, KOI-314.01, KIC 7603200 c Kepler-138 d, KOI-314.02, KIC 7603200 d KOI-314.03, KIC 7603200 b, KIC 7603200.03
        Description This planet has been confirmed by researchers trying to find extrasolar moons. Although no exo-moon was detected, they were able to confirm the planetary nature of the transit signal by using transit timing variations (TTV). These variations are due to planets pulling on each other gravitationally, therefore extending or shrinking the time between transits. There is another planet candidate in the system which has not been confirmed yet.edit This planet has been confirmed by researchers trying to find extrasolar moons. Although no exo-moon was detected, they were able to confirm the planetary nature of the transit signal by using transit timing variations (TTV). These variations are due to planets pulling on each other gravitationally, therefore extending or shrinking the time between transits. There is another planet candidate in the system which has not been confirmed yet.edit Kepler-138 b has been discovered by the Kepler spacecraft and was first announced in 2014. In June 2015, a team of astronomers has measured the mass and size of Kepler-138 b to find that it is in fact the smallest exoplanet yet. Kepler-138 b is a Mars-sized object orbiting a red dwarf star about 200 light years from our solar system. Current measurements are consistent with a variety of compositions, and favor compositions that are mostly rock. All three planets orbiting Kepler-138 are close to their star and are most likely are too hot to be habitable.edit
        Lists Confirmed planets
        Mass [Mjup] 0.006+0.006−0.004edit 0.0020+0.0021−0.0012edit ( 2.1+1.9−1.2 )·10-4edit
        Mass [Mearth] 2.0+1.9−1.1 0.6+0.7−0.4 0.07+0.06−0.04
        Radius [Rjup] 0.109±0.006edit 0.110±0.007edit 0.048±0.003edit
        Radius [Rearth] 1.20±0.07 1.21±0.08 0.52±0.03
        Orbital period [days] 13.7813±0.0001edit 23.0881+0.0009−0.0008edit 10.3126+0.0004−0.0006edit
        Semi-major axis [AU] 0.091±0.003edit 0.128±0.004edit 0.075±0.003edit
        Eccentricity 0.05+0.05−0.03edit N/A N/A
        Equilibrium temperature [K] 446edit 376edit N/A
        Discovery method transit
        Discovery year 2014
        Last updated [yy/mm/dd] 15/07/14

        starStars in the system

        This table lists all stars in the system KOI-314.

          KOI-314
        Alternative star names Kepler-138, KIC 7603200
        Mass [MSun] 0.52±0.06edit
        Radius [RSun] 0.44±0.02edit
        Age [Gyr] N/A
        Metallicity [Fe/H] -0.28±0.10edit
        Temperature [K] 3841±49edit
        Spectral type M1V
        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).

        PlutoMercuryMarsVenusEarthNeptuneUranusSaturnJupiterKOI-314 bKOI-314 cKepler-138 b

        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 zoneKOI-314 bKOI-314 cKepler-138 b

        referencesScientific references and contributors

        Links to scientific papers and other data sources

        history http://www.cfa.harvard.edu/HEK/HEK_IV.pdf
        history http://www.nature.com/nature/journal/v522/n7556/pdf/nature14494.pdf
        history http://adsabs.harvard.edu/abs/2015Natur.522..321J

        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 2
        Hanno Rein hanno(at)hanno-rein.de 10
        Ryan Varley ryanjvarley(at)gmail.com 1

        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 usefule.

        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.