Fork me on GitHub
an open source database of all discovered extrasolar planets

HD 137388

The planetary system HD 137388 hosts at least one planet.

  System parameters
Primary system name HD 137388
Alternative system names N/A
Right ascension 15 35 39.9207
Declination -80 12 16.5384
Distance [parsec] 38.0
Distance [lightyears] 123.9
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.

  •  HD 137388, stellar object
    •  HD 137388 b, planet, semi-major axis: 0.890 AU

    PlanetsPlanets in the system

    This table lists all planets in the system HD 137388.

      HD 137388 b
    Alternative planet names HD 137388 A b, Gaia DR2 5778418870846853888 b, TYC 9437-1921-1 b, HIP 76351 b, Karaka b
    Description HD 137388 b was found with the European High Accuracy Radial velocity Planet Searcher (HARPS) which can reach sub-meter-per-second precision. The planet orbits a K type star. HD 137388 appears in the literature as a binary system. However, according to Roell et al. (2012) the A and B components of HD 137388 have very different proper motions and are unlikely to be a physical binary system.
    Lists Confirmed planets
    Mass [Mjup] 0.223
    Mass [Mearth] 70.9
    Radius [Rjup] N/A
    Radius [Rearth] N/A
    Orbital period [days] 330
    Semi-major axis [AU] 0.890
    Eccentricity 0.360
    Equilibrium temperature [K] 220
    Discovery method RV
    Discovery year 2011
    Last updated [yy/mm/dd] 11/08/02

    starStars in the system

    This table lists all stars in the system HD 137388.

      HD 137388
    Alternative star names Gaia DR2 5778418870846853888, TYC 9437-1921-1, HIP 76351, Karaka
    Mass [MSun] 0.860
    Radius [RSun] 0.820
    Age [Gyr] N/A
    Metallicity [Fe/H] 0.1800
    Temperature [K] 5240
    Spectral type K0/K1V
    Visual magnitude 8.71

    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).

    PlutoMercuryMarsVenusEarthNeptuneUranusSaturnJupiterHD 137388 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 zoneHD 137388 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) 9
    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 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.