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an open source database of all discovered extrasolar planets

LkCa 15

The planetary system LkCa 15 hosts at least 3 planets.

  System parameters
Primary system name LkCa 15
Alternative system names LKCA 15
Right ascension 04 39 17.7912
Declination +22 21 03.3876
Distance [parsec] 145±15
Distance [lightyears] 473±49
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.

  •  LkCa 15, stellar object
    •  LkCa 15 b, planet, semi-major axis: 15±2 AU
      •  LkCa 15 c, planet, semi-major axis: 19±2 AU
        •  LkCa 15 d, planet, semi-major axis: 24.7 AU

        PlanetsPlanets in the system

        This table lists all planets in the system LkCa 15.

          LkCa 15 b LkCa 15 c LkCa 15 d
        Alternative planet names Gaia DR2 144936836795636864 b, TYC 1278-193-1 b Gaia DR2 144936836795636864 c, TYC 1278-193-1 c Gaia DR2 144936836795636864 d, TYC 1278-193-1 d
        Description N/A The young (2 Myr) solar analog LkCa 15 shows evidence for a (proto)planet surrounded by dusty material. The object is located in a known gap in the transitional disk. More planets might be present in this system. N/A
        Lists Confirmed planets Confirmed planets Controversial
        Mass [Mjup] 0.500
        Mass [Mearth] 158.9
        Radius [Rjup] N/A N/A N/A
        Radius [Rearth] N/A N/A N/A
        Orbital period [days] N/A N/A N/A
        Semi-major axis [AU] 15±2 19±2 24.7
        Eccentricity N/A N/A N/A
        Equilibrium temperature [K] N/A N/A N/A
        Discovery method imaging
        Discovery year 2015 2011 2015
        Last updated [yy/mm/dd] 17/12/15

        starStars in the system

        This table lists all stars in the system LkCa 15.

          LkCa 15
        Alternative star names V1079 Tau, V1079 Tauri, TYC 1278-193-1, EPIC 247520207, 2MASS J04391779+2221034, Gaia DR2 144936836795636864
        Mass [MSun] 0.97±0.03
        Radius [RSun] N/A
        Age [Gyr] 0.0020
        Metallicity [Fe/H] N/A
        Temperature [K] 4350
        Spectral type K5:Ve
        Visual magnitude 12.0±0.2

        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).

        PlutoMercuryMarsVenusEarthNeptuneUranusSaturnJupiterLkCa 15 bLkCa 15 cLkCa 15 d

        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 zoneLkCa 15 bLkCa 15 cLkCa 15 d

        referencesScientific references and contributors

        Links to scientific papers and other data sources


        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) 3
        Hanno Rein hanno(at) 3

        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.


        If you spot an error or if you can contribute additional data to this entry, please send an e-mail to 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.