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an open source database of all discovered extrasolar planets

EPIC 218916923

The planetary system EPIC 218916923 hosts at least one planet.

  System parameters
Primary system name EPIC 218916923
Alternative system names K2-139
Right ascension 19 16 15.9691
Declination -17 54 38.4105
Distance [parsec] 152.0
Distance [lightyears] 496
Number of stars in system 1
Number of planets in system 1

ArchitectureArchitecture of the system

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

  •  EPIC 218916923, stellar object
    •  EPIC 218916923 b, planet, semi-major axis: 0.181±0.009 AU

    PlanetsPlanets in the system

    This table lists all planets in the system EPIC 218916923.

      EPIC 218916923 b
    Alternative planet names K2-139 b, Gaia DR2 4084602654011029376 b, TYC 6300-2008-1 b
    Description Data for this planet was imported from the exoplanet.eu database.
    Lists Confirmed planets
    Mass [Mjup] 0.38±0.04
    Mass [Mearth] 121±14
    Radius [Rjup] 0.81±0.03
    Radius [Rearth] 9.1±0.3
    Orbital period [days] 28.3823±0.0003
    Semi-major axis [AU] 0.181±0.009
    Eccentricity 0.00
    Equilibrium temperature [K] N/A
    Discovery method transit
    Discovery year 2017
    Last updated [yy/mm/dd] 17/02/03

    starStars in the system

    This table lists all stars in the system EPIC 218916923.

      EPIC 218916923
    Alternative star names K2-139, 2MASS J19161596-1754384, Gaia DR2 4084602654011029376, TYC 6300-2008-1
    Mass [MSun] 0.918
    Radius [RSun] 0.860
    Age [Gyr] 1.800
    Metallicity [Fe/H] 0.210
    Temperature [K] 5287
    Spectral type N/A
    Visual magnitude 11.65+0.20−0.14

    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).

    PlutoMercuryMarsVenusEarthNeptuneUranusSaturnJupiterEPIC 218916923 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.

    EPIC 218916923 b

    referencesScientific references and contributors

    Links to scientific papers and other data sources

    history http://simbad.u-strasbg.fr/simbad/
    history http://simbad.u-strasbg.fr/simbad

    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
    Christian Sturm Sol-d(at)users.noreply.github.com 1
    Hanno Rein hanno(at)hanno-rein.de 5

    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.