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an open source database of all discovered extrasolar planets

HD 31527

The planetary system HD 31527 hosts at least 3 planets.

  System parameters
Primary system name HD 31527
Alternative system names N/A
Right ascension 04 55 38.3827
Declination -23 14 30.7589
Distance [parsec] 38.6
Distance [lightyears] 125.9
Number of stars in system 1
Number of planets in system 3

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 31527, stellar object
    •  HD 31527 b, planet, semi-major axis: 0.1253 AU
      •  HD 31527 c, planet, semi-major axis: 0.267 AU
        •  HD 31527 d, planet, semi-major axis: 0.818 AU

        PlanetsPlanets in the system

        This table lists all planets in the system HD 31527.

          HD 31527 b HD 31527 c HD 31527 d
        Alternative planet names TYC 6466-479-1 b, Gaia DR2 2972622770521857664 b, HIP 22905 b TYC 6466-479-1 c, Gaia DR2 2972622770521857664 c, HIP 22905 c TYC 6466-479-1 d, Gaia DR2 2972622770521857664 d, HIP 22905 d
        Description This planet is part of a large data release by the Euopean HARP team.
        Lists Confirmed planets
        Mass [Mjup] 0.0363 0.0498 0.0519
        Mass [Mearth] 11.54 15.83 16.50
        Radius [Rjup] N/A N/A N/A
        Radius [Rearth] N/A N/A N/A
        Orbital period [days] 16.55 51.3 274
        Semi-major axis [AU] 0.1253 0.267 0.818
        Eccentricity 0.1300 0.1100 0.380
        Equilibrium temperature [K] 771 529 299
        Discovery method RV
        Discovery year 2011
        Last updated [yy/mm/dd] 11/09/12

        starStars in the system

        This table lists all stars in the system HD 31527.

          HD 31527
        Alternative star names TYC 6466-479-1, Gaia DR2 2972622770521857664, HIP 22905
        Mass [MSun] N/A
        Radius [RSun] N/A
        Age [Gyr] N/A
        Metallicity [Fe/H] N/A
        Temperature [K] 5940
        Spectral type G0V
        Visual magnitude 7.48

        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 31527 bHD 31527 cHD 31527 d

        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) 6
        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.