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an open source database of all discovered extrasolar planets

Gliese 581

The planetary system Gliese 581 hosts at least 6 planets.

  System parameters
Primary system name Gliese 581
Alternative system names N/A
Right ascension 15 19 26
Declination -07 43 20
Distance [parsec] 6.21edit
Distance [lightyears] 20.3
Number of stars in system 1
Number of planets in system 6

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 581, stellar object
    •  Gliese 581 b, planet, semi-major axis: 0.0406±0.0000 AU
      •  Gliese 581 c, planet, semi-major axis: 0.0721±0.0003 AU
        •  Gliese 581 d, planet, semi-major axis: 0.220 AU
          •  Gliese 581 e, planet, semi-major axis: 0.0282±0.0001 AU
            •  Gliese 581 f, planet, semi-major axis: 0.758 AU
              •  Gliese 581 g, planet, semi-major axis: 0.1460 AU

              PlanetsPlanets in the system

              This table lists all planets in the system Gliese 581.

                Gliese 581 b Gliese 581 c Gliese 581 d Gliese 581 e Gliese 581 f Gliese 581 g
              Alternative planet names GJ 581 b, Gj 581 b, Gl 581 b GJ 581 c, Gj 581 c, Gl 581 c GJ 581 d, Gj 581 d, Gl 581 d GJ 581 e, Gj 581 e, Gl 581 e GJ 581 f, Gj 581 f, Gl 581 f GJ 581 g, Gj 581 g, Gl 581 g
              Description Gliese 581 is a red dwarf in the constellation Libra. It is the 89th closest star to the Solar System. In late 2010, US astronomers annoucent a planet in the habitable zone. This statement has been challenged by the European HARPS team. Gliese 581 c is likely to have a runaway greenhouse effect. A radio message has been sent to Gliese 581 in 2008 and will reach the star system in 2029.edit Gliese 581 is a red dwarf in the constellation Libra. It is the 89th closest star to the Solar System. In late 2010, US astronomers annoucent a planet in the habitable zone. This statement has been challenged by the European HARPS team. Gliese 581 c is likely to have a runaway greenhouse effect. A radio message has been sent to Gliese 581 in 2008 and will reach the star system in 2029.edit A new analysis shows that there is no signal of the planet Gliese 581 d after stellar activity reduction.edit Gliese 581 is a red dwarf in the constellation Libra. It is the 89th closest star to the Solar System. In late 2010, US astronomers annoucent a planet in the habitable zone. This statement has been challenged by the European HARPS team. Gliese 581 c is likely to have a runaway greenhouse effect. A radio message has been sent to Gliese 581 in 2008 and will reach the star system in 2029.edit Gliese 581 f is an unconfirmed planet. Its discovery was announced in 2010 by the Lick-Carnegie Exoplanet Survey. However an analysis by the European HARPS team concluded that the system is unlikely to contain a planet with the quoted characteristic.edit A new analysis shows that there is no signal of the planet Gliese 581 d after stellar activity reduction.edit
              Lists Confirmed planets Confirmed planets Retracted planet candidate Confirmed planets Retracted planet candidate Retracted planet candidate
              Mass [Mjup] 0.0497±0.0009edit 0.0173±0.0009edit 0.0190edit 0.0061edit 0.0220edit 0.0098edit
              Mass [Mearth] 15.8±0.3 5.5±0.3 6.04 1.939 7.00 3.10
              Radius [Rjup] N/A N/A N/A N/A N/A N/A
              Radius [Rearth] N/A N/A N/A N/A N/A N/A
              Orbital period [days] 5.3686±0.0001edit 12.914±0.002edit 66.6edit 3.1490±0.0002edit 433edit 36.5edit
              Semi-major axis [AU] 0.0406±0.0000edit 0.0721±0.0003edit 0.220edit 0.0282±0.0001edit 0.758edit 0.1460edit
              Eccentricity < 0.0300edit < 0.0600edit 0.250edit < 0.0600edit 0.00edit 0.00edit
              Equilibrium temperature [K] 419edit 313edit 181.0edit 501edit N/A 231edit
              Discovery method RV
              Discovery year 2005 2007 2007 2009 2010 2010
              Last updated [yy/mm/dd] 14/07/04

              starStars in the system

              This table lists all stars in the system Gliese 581.

                Gliese 581
              Alternative star names N/A
              Mass [MSun] 0.310edit
              Radius [RSun] 0.300edit
              Age [Gyr] N/A
              Metallicity [Fe/H] -0.1350edit
              Temperature [K] 3498edit
              Spectral type M2.5V
              Visual magnitude 10.55edit

              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 581 bGliese 581 cGliese 581 dGliese 581 eGliese 581 fGliese 581 g

              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 581 bGliese 581 cGliese 581 dGliese 581 eGliese 581 fGliese 581 g

              referencesScientific references and contributors

              Links to scientific papers and other data sources

              history http://phl.upr.edu/projects/habitable-exoplanets-catalog/data/database
              history http://adsabs.harvard.edu/abs/2014arXiv1407.1049R
              history http://adsabs.harvard.edu/abs/2013ApJ...764....3R
              history http://www.sciencemag.org/content/early/2014/07/02/science.1253253.abstract

              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 7
              Marc-Antoine Martinod marc-antoine.martinod(at)ens-cachan.fr 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.