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Gliese 876

The planetary system Gliese 876 hosts at least 4 planets.

  System parameters
Primary system name Gliese 876
Alternative system names N/A
Right ascension 22 53 13
Declination -14 15 13
Distance [parsec] 4.69edit
Distance [lightyears] 15.30
Number of stars in system 1
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.

  •  Gliese 876, stellar object
    •  Gliese 876 b, planet, semi-major axis: 0.2186±0.0000 AU
      •  Gliese 876 c, planet, semi-major axis: 0.1360±0.0000 AU
        •  Gliese 876 d, planet, semi-major axis: 0.0218±0.0000 AU
          •  Gliese 876 e, planet, semi-major axis: 0.334+0.002−0.003 AU

          PlanetsPlanets in the system

          This table lists all planets in the system Gliese 876.

            Gliese 876 b Gliese 876 c Gliese 876 d Gliese 876 e
          Alternative planet names GJ 876 b, Gj 876 b, Gl 876 b GJ 876 c, Gj 876 c, Gl 876 c GJ 876 d, Gj 876 d, Gl 876 d GJ 876 e, Gj 876 e, Gl 876 e
          Description Gliese 876 is a red dwarf only 15 light years from Earth in the constellation Aquarius. The orbits of the outer three planets are locked in a Laplace reasonance. This resonance is also present in the moons of Jupiter: Io, Europa, Ganymede. This strong dynamical interaction leads to interesting conclusions about the formation history of the system. It is a very strong indication that the planets migrated in the protoplanetary disk to their current position and got locked into mean motion resonances during that process.edit Gliese 876 is a red dwarf only 15 light years from Earth in the constellation Aquarius. The orbits of the outer three planets are locked in a Laplace reasonance. This resonance is also present in the moons of Jupiter: Io, Europa, Ganymede. This strong dynamical interaction leads to interesting conclusions about the formation history of the system. It is a very strong indication that the planets migrated in the protoplanetary disk to their current position and got locked into mean motion resonances during that process.edit Gliese 876 is a red dwarf only 15 light years from Earth in the constellation Aquarius. The orbits of the outer three planets are locked in a Laplace reasonance. This resonance is also present in the moons of Jupiter: Io, Europa, Ganymede. This strong dynamical interaction leads to interesting conclusions about the formation history of the system. It is a very strong indication that the planets migrated in the protoplanetary disk to their current position and got locked into mean motion resonances during that process.edit N/A
          Lists Confirmed planets
          Mass [Mjup] 2.67±0.05edit 0.843±0.019edit 0.022+0.011−0.003edit 0.054+0.007−0.006edit
          Mass [Mearth] 849+16−17 268±6 6.9+3.4−0.8 17.2+2.2−2.0
          Radius [Rjup] N/A N/A N/A N/A
          Radius [Rearth] N/A N/A N/A N/A
          Orbital period [days] 61.087+0.011−0.012edit 30.077+0.007−0.006edit 1.9379±0.0000edit 124.7+1.3−1.4edit
          Semi-major axis [AU] 0.2186±0.0000edit 0.1360±0.0000edit 0.0218±0.0000edit 0.334+0.002−0.003edit
          Eccentricity 0.0340+0.0019−0.0030edit 0.254±0.003edit 0.11±0.05edit 0.03±0.03edit
          Equilibrium temperature [K] N/A N/A N/A N/A
          Discovery method RV
          Discovery year 2000 2000 2005 2010
          Last updated [yy/mm/dd] 15/06/08

          starStars in the system

          This table lists all stars in the system Gliese 876.

            Gliese 876
          Alternative star names N/A
          Mass [MSun] 0.370edit
          Radius [RSun] 0.376±0.006edit
          Age [Gyr] N/A
          Metallicity [Fe/H] 0.1900edit
          Temperature [K] 3129±19edit
          Spectral type M4 V
          Visual magnitude 10.17edit

          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 876 bGliese 876 cGliese 876 dGliese 876 e

          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 876 bGliese 876 cGliese 876 dGliese 876 e

          referencesScientific references and contributors

          Links to scientific papers and other data sources

          history http://iopscience.iop.org/0004-637X/719/1/890
          history http://adsabs.harvard.edu/abs/2014MNRAS.438.2413V
          history http://arxiv.org/pdf/1403.7646v1.pdf
          history http://arxiv.org/abs/1504.07995
          history http://phl.upr.edu/projects/habitable-exoplanets-catalog/data/database
          history http://adsabs.harvard.edu/abs/2010ApJ...719..890R

          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 1
          Hanno Rein hanno(at)hanno-rein.de 9
          Jaroslav Merc jaroslav.merc(at)gmail.com 1
          Marc-Antoine Martinod marc-antoine.martinod(at)ens-cachan.fr 1
          Ryan Varley ryanjvarley(at)gmail.com 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 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.