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The planetary system Kepler-11 hosts at least 6 planets.

  System parameters
Primary system name Kepler-11
Alternative system names KOI-157, KIC 6541920
Right ascension 19 48 27.6228
Declination +41 54 32.9026
Distance [parsec] 613
Distance [lightyears] 2000
Number of stars in system 1
Number of planets in system 6



Kepler-11 is a Sun-like star around which six planets orbit. At times, two or more planets pass in front of the star at once, as shown in this artist's conception of a simultaneous transit of three planets observed by NASA's Kepler spacecraft on Aug. 26, 2010. Image credit: NASA/Tim Pyle

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-11, stellar object
    •  Kepler-11 b, planet, semi-major axis: 0.0910±0.0010 AU
      •  Kepler-11 c, planet, semi-major axis: 0.1070 AU
        •  Kepler-11 d, planet, semi-major axis: 0.1550 AU
          •  Kepler-11 e, planet, semi-major axis: 0.1950 AU
            •  Kepler-11 f, planet, semi-major axis: 0.250 AU
              •  Kepler-11 g, planet, semi-major axis: 0.466 AU

              PlanetsPlanets in the system

              This table lists all planets in the system Kepler-11.

                Kepler-11 b Kepler-11 c Kepler-11 d Kepler-11 e Kepler-11 f Kepler-11 g
              Alternative planet names KOI-157.06, KOI-157 b, KIC 6541920 b, Gaia DR2 2076960598545789824 b KOI-157.01, KOI-157 c, KIC 6541920 c, Gaia DR2 2076960598545789824 c KOI-157.02, KOI-157 d, KIC 6541920 d, Gaia DR2 2076960598545789824 d KOI-157.03, KOI-157 e, KIC 6541920 e, Gaia DR2 2076960598545789824 e KOI-157.04, KOI-157 f, KIC 6541920 f, Gaia DR2 2076960598545789824 f KOI-157.05, KOI-157 g, KIC 6541920 g, Gaia DR2 2076960598545789824 g
              Description The Kepler-11 systems contains six transiting planets. The system was originally discovered by the Kepler telescope in 2011. The inner five planets make up a tightly packed system. A dynamical analysis revealed that the inner planets have a remarkably low density, lower than that of rock.
              Lists Confirmed planets
              Mass [Mjup] 0.006+0.004−0.003 0.0090+0.0000−0.0001 0.023+0.003−0.005 0.025+0.005−0.007 0.006±0.003 < 0.0786
              Mass [Mearth] 1.9+1.4−1.0 2.869+0.010−0.020 7.3+0.8−1.5 8.0+1.5−2.1 2.0+0.8−0.9 < 24.9950
              Radius [Rjup] 0.1640±0.0018 0.2615+0.0009−0.0018 0.2834±0.0018 0.3809±0.0018 0.2260+0.0018−0.0027 0.3035±0.0018
              Radius [Rearth] 1.84±0.02 2.932+0.010−0.020 3.18±0.02 4.27±0.02 2.53+0.02−0.03 3.40±0.02
              Orbital period [days] 10.3039+0.0006−0.0010 13.0241+0.0013−0.0008 22.6845±0.0009 31.9996+0.0008−0.0012 46.689±0.003 118.3807+0.0010−0.0006
              Semi-major axis [AU] 0.0910±0.0010 0.1070 0.1550 0.1950 0.250 0.466
              Eccentricity 0.04+0.07−0.04 0.026+0.063−0.013 0.004+0.007−0.002 0.012±0.006 0.013+0.013−0.009 < 0.1500
              Equilibrium temperature [K] 871 807 659 596 525 386
              Discovery method transit
              Discovery year 2011
              Last updated [yy/mm/dd] 13/05/28

              starStars in the system

              This table lists all stars in the system Kepler-11.

              Alternative star names KOI-157, KIC 6541920, 2MASS J19482762+4154328, Gaia DR2 2076960598545789824
              Mass [MSun] 0.96+0.03−0.02
              Radius [RSun] 1.053+0.013−0.015
              Age [Gyr] 8.1+1.2−1.3
              Metallicity [Fe/H] N/A
              Temperature [K] 5663+55−67
              Spectral type G
              Visual magnitude 13.70

              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-11 bKepler-11 cKepler-11 dKepler-11 eKepler-11 fKepler-11 g

              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-11 bKepler-11 cKepler-11 dKepler-11 eKepler-11 fKepler-11 g

              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) 2
              Hanno Rein hanno(at) 10
              Marc-Antoine Martinod marc-antoine.martinod(at) 3
              Ryan Varley ryanjvarley(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.