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an open source database of all discovered extrasolar planets

KIC 7177553

The planetary system KIC 7177553 hosts at least one planet. Note that the system is a multiple star system. It hosts at least 4 stellar components.

  System parameters
Primary system name KIC 7177553
Alternative system names N/A
Right ascension 18 52 02.914
Declination +42 43 16.52
Distance [parsec] 406±10
Distance [lightyears] 1324±33
Number of stars in system 4
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.

  •  Stellar binary
    •  Stellar binary, semi-major axis: 0.1709±0.0007 AU, 17.9965±0.0000 days
      •  KIC 7177553 Aa, stellar object
        •  KIC 7177553 Ab, stellar object
          •  KIC 7177553 A(ab) b, circumbinary planet, P-type, semi-major axis: 1.6±0.2 AU
          •  Stellar binary, 16.549±0.004 days
            •  KIC 7177553 Ba, stellar object
              •  KIC 7177553 Bb, stellar object

            PlanetsPlanets in the system

            This table lists all planets in the system KIC 7177553.

              KIC 7177553 A(ab) b
            Alternative planet names KOI-6837 A(ab) b
            Description This circumbinary planet candidate is located in an SB4 system comprising an eclipsing binary (the planet host) and a secondary SB2 system. It was discovered by observing the system's eclipse timing variations. Further observations will be needed to confirm the existence. Evolutionary models predict a very young system age of 32–36 million years, implying the stars are still pre-main sequence stars.
            Lists Controversial; Planets in binary systems, P-type
            Mass [Mjup] 5±2
            Mass [Mearth] 1589±636
            Radius [Rjup] N/A
            Radius [Rearth] N/A
            Orbital period [days] 529±2
            Semi-major axis [AU] 1.6±0.2
            Eccentricity 0.46±0.02
            Equilibrium temperature [K] N/A
            Discovery method timing
            Discovery year 2015
            Last updated [yy/mm/dd] 17/12/09

            starStars in the system

            This table lists all stars in the system KIC 7177553.

              KIC 7177553 Aa KIC 7177553 Ab KIC 7177553 Ba KIC 7177553 Bb
            Alternative star names KOI-6837 Aa, TYC 3127-167-1 Aa KOI-6837 Ab, KOI-6837.01, TYC 3127-167-1 Ab KOI-6837 Ba, TYC 3127-167-1 Ba KOI-6837 Bb, TYC 3127-167-1 Bb
            Mass [MSun] 1.043±0.014 0.986±0.015 1.040±0.005 1.000±0.004
            Radius [RSun] 0.940±0.005 0.941±0.005 N/A N/A
            Age [Gyr] > 0.0320 > 0.0320 N/A N/A
            Metallicity [Fe/H] 0.00±0.11 -0.10±0.13 -0.12±0.13 -0.12±0.13
            Temperature [K] 5800±130 5740±140 5600±150 5600±140
            Spectral type G2V
            Visual magnitude 12.90 13.20 13.10 13.20

            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).

            PlutoMercuryMarsVenusEarthNeptuneUranusSaturnJupiterKIC 7177553 A(ab) b

            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) 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 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.