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an open source database of all discovered extrasolar planets

HD 100546

The planetary system HD 100546 hosts at least 2 planets.

  System parameters
Primary system name HD 100546
Alternative system names N/A
Right ascension 11 33 25.4404
Declination -70 11 41.2393
Distance [parsec] 97±4
Distance [lightyears] 316±13
Number of stars in system 1
Number of planets in system 2



This artist's impression shows the formation of a gas giant planet in the ring of dust around the young star HD 100546. This system is also suspected to contain another large planet orbiting closer to the star. The newly-discovered object lies about 70 times further from its star than the Earth does from the Sun. This protoplanet is surrounded by a thick cloud of material so that, seen from this position, its star almost invisible and red in colour because of the scattering of light from the dust. Credit: ESO/L. Calcada

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 100546, stellar object
    •  HD 100546 b, planet, semi-major axis: 53±2 AU
      •  HD 100546 c, planet, semi-major axis: 13.50 AU

      PlanetsPlanets in the system

      This table lists all planets in the system HD 100546.

        HD 100546 b HD 100546 c
      Alternative planet names HIP 56379 b, Gaia DR2 5233604915060520576 b, TYC 9229-2446-1 b HIP 56379 c, Gaia DR2 5233604915060520576 c, TYC 9229-2446-1 c
      Description HD 100546 is a Herbig Ae/Be star. High contrast observations of the circumstellar disk reveal an emmision source at a distance of 68 astronomical units. The most likely explanation is a planet in the process of forming. HD 100546b has, as of the 2nd November, 2014, been confirmed to be a planet. HD 100546b is a unique laboratory to study the formation process of a new planetary system, with one giant planet currently forming in the disk and a second planet possibly oribitin in the disk gap at a smaller separation. N/A
      Lists Confirmed planets Controversial
      Mass [Mjup] 17.50 N/A
      Mass [Mearth] 5562 N/A
      Radius [Rjup] 6+2−3 N/A
      Radius [Rearth] 67+28−29 N/A
      Orbital period [days] N/A N/A
      Semi-major axis [AU] 53±2 13.50
      Eccentricity N/A N/A
      Equilibrium temperature [K] 1028+227−253 N/A
      Discovery method imaging N/A
      Discovery year 2013 N/A
      Last updated [yy/mm/dd] 14/12/26 N/A

      starStars in the system

      This table lists all stars in the system HD 100546.

        HD 100546
      Alternative star names HIP 56379, Gaia DR2 5233604915060520576, TYC 9229-2446-1
      Mass [MSun] 2.40±0.10
      Radius [RSun] N/A
      Age [Gyr] 0.0050
      Metallicity [Fe/H] N/A
      Temperature [K] 10500
      Spectral type B9Vne
      Visual magnitude 6.700±0.010

      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 100546 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 100546 bHD 100546 c

      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
      Kevin Knittel kevin.knittel(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 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.