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an open source database of all discovered extrasolar planets


The planetary system Pr0201 hosts at least one planet.

  System parameters
Primary system name Pr0201
Alternative system names N/A
Right ascension 08 41 43
Declination +20 13 36
Distance [parsec] 177.0edit
Distance [lightyears] 577
Number of stars in system 1
Number of planets in system 1



Artist's impression of a planet in the Beehive cluster. Image credit: NASA/JPL-Caltech

ArchitectureArchitecture of the system

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

  •  Pr0201, stellar object
    •  Pr0201 b, planet

    PlanetsPlanets in the system

    This table lists all planets in the system Pr0201.

      Pr0201 b
    Alternative planet names BD+20 2184, 2MASS J08414382+2013368
    Description This planet is a so-called Hot Jupiter which orbits tightly around its parent star in the Beehive Cluster, a collection of roughly 1,000 stars that appear to be swarming around a common center. The planet is not habitable but its sky would be starrier than what we see from Earth.edit
    Lists Confirmed planets; Planets in open clusters
    Mass [Mjup] 0.540edit
    Mass [Mearth] 171.6
    Radius [Rjup] N/A
    Radius [Rearth] N/A
    Orbital period [days] 4.43edit
    Semi-major axis [AU] N/A
    Eccentricity 0.00edit
    Equilibrium temperature [K] N/A
    Discovery method RV
    Discovery year 2012
    Last updated [yy/mm/dd] 12/09/14

    starStars in the system

    This table lists all stars in the system Pr0201.

    Alternative star names N/A
    Mass [MSun] 1.234edit
    Radius [RSun] 1.167edit
    Age [Gyr] N/A
    Metallicity [Fe/H] 0.1870edit
    Temperature [K] 6174edit
    Spectral type F7.5
    Visual magnitude 10.33edit

    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).

    PlutoMercuryMarsVenusEarthNeptuneUranusSaturnJupiterPr0201 b

    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.

    Pr0201 b

    referencesScientific references and contributors

    Links to scientific papers and other data sources

    No links found.

    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
    Christian Sturm Sol-d(at) 1
    Hanno Rein hanno(at) 4
    Kenneth J Cott kennethjcott(at) 1
    Marc-Antoine Martinod marc-antoine.martinod(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.