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an open source database of all discovered extrasolar planets

PSO J318.5-22

The planetary system PSO J318.5-22 hosts at least one planet. The planet is a so called orphan planet and not associated with any star.

  System parameters
Primary system name PSO J318.5-22
Alternative system names N/A
Right ascension 21 14 08
Declination +22 51 36
Distance [parsec] 24.6±1.4
Distance [lightyears] 80±5
Number of stars in system 0
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.

  •  PSO J318.5-22, planet

    PlanetsPlanets in the system

    This table lists all planets in the system PSO J318.5-22.

      PSO J318.5-22
    Alternative planet names PSO J318.5338-22.8603, 2MASS J21140802-2251358, WISE J211408.13-225137.3, PSO J318-22
    Description PSO J318-22 is a free floating planetary mass object. It was discovered using the Pan-STARRS1 survey and is part of the beta Pictoris moving group. Evolutionary models give the object a temperature of 1160K and a mass about 6 times that of Jupiter, making PSO J318-22 one of the lowest mass free-floating objects in the solar neighborhood.
    Lists Confirmed planets; Orphan planets
    Mass [Mjup] 6.5+1.3−1.0
    Mass [Mearth] 2066+413−318
    Radius [Rjup] 1.53+0.02−0.03
    Radius [Rearth] 17.1+0.2−0.3
    Orbital period [days] N/A
    Semi-major axis [AU] N/A
    Eccentricity N/A
    Equilibrium temperature [K] 1160+30−40
    Discovery method imaging
    Discovery year 2013
    Last updated [yy/mm/dd] 13/10/03

    starStars in the system

    This table lists all stars in the system PSO J318.5-22.


    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).

    PlutoMercuryMarsVenusEarthNeptuneUranusSaturnJupiterPSO J318.5-22

    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
    Christian Sturm Sol-d(at) 1
    Hanno Rein hanno(at) 4

    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.