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an open source database of all discovered extrasolar planets

NGC 2423 3

The planetary system NGC 2423 3 hosts at least one planet.

  System parameters
Primary system name NGC 2423 3
Alternative system names NGC 2423 MMU 3
Right ascension 07 37 09.2328
Declination -13 54 23.9543
Distance [parsec] 766
Distance [lightyears] 2498
Number of stars in system 1
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.

  •  NGC 2423 3, stellar object
    •  NGC 2423 3 b, planet, semi-major axis: 2.10 AU

    PlanetsPlanets in the system

    This table lists all planets in the system NGC 2423 3.

      NGC 2423 3 b
    Alternative planet names NGC 2423 MMU 3 b, BD-13 2130 b, Gaia DR2 3030262468592291072 b, TYC 5409-2156-1 b
    Description NGC 2423 MMU 3 b is a massive giant planet or brown dwarf orbiting a giant star in the open cluster NGC 2423.
    Lists Confirmed planets; Planets in open clusters
    Mass [Mjup] 10.60
    Mass [Mearth] 3369
    Radius [Rjup] N/A
    Radius [Rearth] N/A
    Orbital period [days] 714±5
    Semi-major axis [AU] 2.10
    Eccentricity 0.21±0.07
    Equilibrium temperature [K] N/A
    Discovery method RV
    Discovery year 2007
    Last updated [yy/mm/dd] 18/03/23

    starStars in the system

    This table lists all stars in the system NGC 2423 3.

      NGC 2423 3
    Alternative star names NGC 2423 MMU 3, BD-13 2130, TYC 5409-2156-1, 2MASS J07370922-1354239, Gaia DR2 3030262468592291072
    Mass [MSun] 2.4±0.2
    Radius [RSun] N/A
    Age [Gyr] 0.7±0.2
    Metallicity [Fe/H] 0.14±0.09
    Temperature [K] N/A
    Spectral type G5IV-V/K2III
    Visual magnitude 10.04±0.04

    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).

    PlutoMercuryMarsVenusEarthNeptuneUranusSaturnJupiterNGC 2423 3 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.

    Habitable zoneNGC 2423 3 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) 2
    Hanno Rein hanno(at) 8
    Marc-Antoine Martinod marc-antoine.martinod(at) 2

    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.