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an open source database of all discovered extrasolar planets

1SWASP J1407

The planetary system 1SWASP J1407 hosts at least one planet.

  System parameters
Primary system name 1SWASP J1407
Alternative system names N/A
Right ascension 14 07 47.93
Declination -39 45 42.7
Distance [parsec] 133±12
Distance [lightyears] 434±39
Number of stars in system 1
Number of planets in system 1



Artist's conception of the extrasolar ring system circling the young giant planet or brown dwarf J1407b. The rings are shown eclipsing the young sun-like star J1407, as they would have appeared in early 2007. Credit: Ron Miller

ArchitectureArchitecture of the system

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

  •  1SWASP J1407, stellar object
    •  1SWASP J1407 b, planet

    PlanetsPlanets in the system

    This table lists all planets in the system 1SWASP J1407.

      1SWASP J1407 b
    Alternative planet names 1SWASP J140747.93-394542.6 b, J1407 b
    Description The light curve of 1SWASP J140747.93-394542.6 underwent a complex series of deep eclipses that lasted 56 days in April 2007. This light curve is interpreted as the transit of a giant ring system that is filling up a fraction of the Hill sphere of an unseen secondary companion, J1407b. The object is currently listed as controversial as various inconsistencies arise in current models and it is not clear that the object really is a planet.
    Lists Controversial
    Mass [Mjup] 14.00
    Mass [Mearth] 4450
    Radius [Rjup] N/A
    Radius [Rearth] N/A
    Orbital period [days] 10044
    Semi-major axis [AU] N/A
    Eccentricity 0.80±0.10
    Equilibrium temperature [K] N/A
    Discovery method transit
    Discovery year 2007
    Last updated [yy/mm/dd] 15/02/21

    starStars in the system

    This table lists all stars in the system 1SWASP J1407.

      1SWASP J1407
    Alternative star names 1SWASP J140747.93-394542.6
    Mass [MSun] N/A
    Radius [RSun] 0.99±0.11
    Age [Gyr] 0.0160
    Metallicity [Fe/H] N/A
    Temperature [K] N/A
    Spectral type K5
    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).

    PlutoMercuryMarsVenusEarthNeptuneUranusSaturnJupiter1SWASP J1407 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
    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.