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an open source database of all discovered extrasolar planets


The planetary system KOI-1781 hosts at least 3 planets.

  System parameters
Primary system name KOI-1781
Alternative system names Kepler-411, KIC 11551692
Right ascension 19 10 25.34
Declination +49 31 23.7
Distance [parsec] N/A
Distance [lightyears] N/A
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-1781, stellar object
    •  KOI-1781 b, planet, semi-major axis: 0.0380±0.0010 AU
      •  Kepler-411 c, planet, semi-major axis: 0.073±0.002 AU
        •  KOI-1781.03, planet, semi-major axis: 0.276±0.007 AU

        PlanetsPlanets in the system

        This table lists all planets in the system KOI-1781.

          KOI-1781 b Kepler-411 c KOI-1781.03
        Alternative planet names KOI-1781.02, Kepler-411 b, KIC 11551692 b KOI-1781.01, KOI-1781 c, KIC 11551692 c N/A
        Description The KOI-1781 system was discovered by the Kepler spacecraft. A subsequent analysis has confirmed the planetary nature of this planet.edit This planet was discovered by the NASA Kepler spacecraft and is part of the May 10th 2016 data release. Although not many details are known about this particular system yet, it has a very low probability of being a false positive.edit The KOI-1781 system was discovered by the Kepler spacecraft. The candidate KOI-1781.03 has not been confirmed.edit
        Lists Confirmed planets Confirmed planets Controversial
        Mass [Mjup] N/A N/A N/A
        Mass [Mearth] N/A N/A N/A
        Radius [Rjup] 0.168±0.018edit 0.292+0.011−0.006edit 0.23±0.03edit
        Radius [Rearth] 1.9±0.2 3.27+0.12−0.07 2.6±0.3
        Orbital period [days] 3.0052+0.0001−0.0000edit 7.8344±0.0000edit 58.0213+0.0002−0.0001edit
        Semi-major axis [AU] 0.0380±0.0010edit 0.073±0.002edit 0.276±0.007edit
        Eccentricity 0.00edit 0.00edit 0.00edit
        Equilibrium temperature [K] N/A N/A N/A
        Discovery method transit
        Discovery year 2013 2016 2013
        Last updated [yy/mm/dd] 14/01/06 17/11/28 17/11/28

        starStars in the system

        This table lists all stars in the system KOI-1781.

        Alternative star names Kepler-411, KIC 11551692, 2MASS J19102533+4931237
        Mass [MSun] 0.81+0.02−0.03edit
        Radius [RSun] 0.750±0.010edit
        Age [Gyr] N/A
        Metallicity [Fe/H] 0.05+0.11−0.10edit
        Temperature [K] 4906+48−51edit
        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).

        PlutoMercuryMarsVenusEarthNeptuneUranusSaturnJupiterKOI-1781 bKepler-411 cKOI-1781.03

        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-1781 bKepler-411 cKOI-1781.03

        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
        Christian Sturm Sol-d(at) 1
        Hanno Rein hanno(at) 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.


        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.