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Gliese 676

The planetary system Gliese 676 hosts at least 4 planets. Note that the system is a multiple star system. It hosts at least 2 stellar components.

  System parameters
Primary system name Gliese 676
Alternative system names N/A
Right ascension 17 30 11
Declination -51 38 13
Distance [parsec] 16.50edit
Distance [lightyears] 53.8
Number of stars in system 2
Number of planets in system 4

ArchitectureArchitecture of the system

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

  •  Stellar binary
    •  Gliese 676 A, stellar object
      •  Gliese 676 A d, planet, semi-major axis: 0.0413±0.0014 AU
        •  Gliese 676 A e, planet, semi-major axis: 0.187±0.007 AU
          •  Gliese 676 A b, planet, semi-major axis: 1.80±0.07 AU
            •  Gliese 676 A c, planet, semi-major axis: 5.20 AU
            •  Gliese 676 B, stellar object

            PlanetsPlanets in the system

            This table lists all planets in the system Gliese 676.

              Gliese 676 A d Gliese 676 A e Gliese 676 A b Gliese 676 A c
            Alternative planet names GJ 676 A d GJ 676 A e GJ 676 A b GJ 676 A c
            Description The star system Gliese 676 is located in the constellation Ara. This planet was confirmed using a Bayesian probability analysis. It is a small Super-Earth.edit The star system Gliese 676 is located in the constellation Ara. This planet was confirmed using a Bayesian probability analysis. It has a false alarme probability of less than one percent.edit This gas giant was found in 2009 and announced in 2011. At that time there were strong indications for more planets but more data was needed to confirm them.edit This companion is inferred from a curvature in the radial velocity residuals. Its nature is currently unclear.edit
            Lists Confirmed planets; Planets in binary systems, S-type Confirmed planets; Planets in binary systems, S-type Confirmed planets; Planets in binary systems, S-type Controversial; Planets in binary systems, S-type
            Mass [Mjup] 0.014±0.002edit 0.036±0.005edit 5.0±0.3edit 3.00edit
            Mass [Mearth] 4.5±0.6 11.4±1.6 1574±99 954
            Radius [Rjup] N/A N/A N/A N/A
            Radius [Rearth] N/A N/A N/A N/A
            Orbital period [days] 3.6000±0.0008edit 35.37±0.07edit 1050.3±1.2edit 4400edit
            Semi-major axis [AU] 0.0413±0.0014edit 0.187±0.007edit 1.80±0.07edit 5.20edit
            Eccentricity 0.15±0.09edit 0.24±0.12edit 0.328±0.004edit 0.200edit
            Equilibrium temperature [K] N/A N/A N/A N/A
            Discovery method RV
            Discovery year 2012 2012 2011 2011
            Last updated [yy/mm/dd] 12/12/05 12/12/05 12/12/05 N/A

            starStars in the system

            This table lists all stars in the system Gliese 676.

              Gliese 676 A Gliese 676 B
            Alternative star names N/A N/A
            Mass [MSun] 0.71±0.04edit 0.1700edit
            Radius [RSun] N/A N/A
            Age [Gyr] N/A N/A
            Metallicity [Fe/H] 0.230edit N/A
            Temperature [K] N/A N/A
            Spectral type M0V M3.5V
            Visual magnitude 9.59edit N/A

            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).

            PlutoMercuryMarsVenusEarthNeptuneUranusSaturnJupiterGliese 676 A dGliese 676 A eGliese 676 A bGliese 676 A 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 zoneGliese 676 A dGliese 676 A eGliese 676 A bGliese 676 A c

            referencesScientific references and contributors

            Links to scientific papers and other data sources

            history http://arxiv.org/pdf/1206.7118v2.pdf
            history http://adsabs.harvard.edu/abs/2012A%26A...548A..58A
            history http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=gj+676+A
            history http://adsabs.harvard.edu/abs/2011A&A...526A.141F
            history http://vizier.u-strasbg.fr/viz-bin/VizieR-S?CCDM%20J17302-5138AB
            history http://en.wikipedia.org/wiki/Gliese_676

            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)googlemail.com 2
            Hanno Rein hanno(at)hanno-rein.de 4

            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 usefule.

            correctionsCorrections

            If you spot an error or if you can contribute additional data to this entry, please send an e-mail to exoplanet@hanno-rein.de. 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.