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an open source database of all discovered extrasolar planets

HIP 67851

The planetary system HIP 67851 hosts at least 2 planets.

  System parameters
Primary system name HIP 67851
Alternative system names N/A
Right ascension 13 53 52.06197
Declination -35 18 51.7033
Distance [parsec] 66.0±1.7
Distance [lightyears] 215±6
Number of stars in system 1
Number of planets in system 2

ArchitectureArchitecture of the system

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

  •  HIP 67851, stellar object
    •  HIP 67851 b, planet, semi-major axis: 0.46±0.02 AU
      •  HIP 67851 c, planet, semi-major axis: 3.8±0.2 AU

      PlanetsPlanets in the system

      This table lists all planets in the system HIP 67851.

        HIP 67851 b HIP 67851 c
      Alternative planet names HD 121056 b, TYC 7287-1874-1 b, Gaia DR2 6169943210465504384 b, GJ 532.1 b HD 121056 c, TYC 7287-1874-1 c, Gaia DR2 6169943210465504384 c, GJ 532.1 c
      Description HIP 67851 b is one of the rare examples of a close-in planet orbiting a red giant star. HIP 67851 c orbits a red giant star. Currently the parameters are sufficiently uncertain that it is not clear whether or not it will be engulfed during the further expansion of its parent star.
      Lists Confirmed planets
      Mass [Mjup] 1.38±0.15 6.0±0.8
      Mass [Mearth] 439±48 1901±242
      Radius [Rjup] N/A N/A
      Radius [Rearth] N/A N/A
      Orbital period [days] 88.90±0.10 2132±88
      Semi-major axis [AU] 0.46±0.02 3.8±0.2
      Eccentricity 0.05±0.04 0.17±0.06
      Equilibrium temperature [K] N/A N/A
      Discovery method RV
      Discovery year 2014
      Last updated [yy/mm/dd] 15/05/25

      starStars in the system

      This table lists all stars in the system HIP 67851.

        HIP 67851
      Alternative star names HD 121056, HR 5224, Gliese 532.1, CD-34 9223, SAO 204963, TYC 7287-1874-1, Gaia DR2 6169943210465504384, GJ 532.1
      Mass [MSun] 1.30±0.18
      Radius [RSun] 5.9±0.3
      Age [Gyr] N/A
      Metallicity [Fe/H] -0.03±0.10
      Temperature [K] 4805±100
      Spectral type K0III
      Visual magnitude 6.17

      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).

      PlutoMercuryMarsVenusEarthNeptuneUranusSaturnJupiterHIP 67851 bHIP 67851 c

      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 zoneHIP 67851 bHIP 67851 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
      Andrew Tribick ajtribick(at) 2
      Christian Sturm Sol-d(at) 2
      Hanno Rein hanno(at) 2
      Ryan Varley ryanjvarley(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.