Fork me on GitHub
an open source database of all discovered extrasolar planets

HD 40307

The planetary system HD 40307 hosts at least 6 planets.

  System parameters
Primary system name HD 40307
Alternative system names N/A
Right ascension 05 54 04.23991
Declination -60 01 24.4977
Distance [parsec] 12.99±0.06edit
Distance [lightyears] 42.4±0.2
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.

  •  HD 40307, stellar object
    •  HD 40307 b, planet, semi-major axis: 0.0475±0.0011 AU
      •  HD 40307 c, planet, semi-major axis: 0.0812±0.0018 AU
        •  HD 40307 d, planet, semi-major axis: 0.134±0.003 AU
          •  HD 40307 e, planet, semi-major axis: 0.189+0.008−0.010 AU
            •  HD 40307 f, planet, semi-major axis: 0.248±0.005 AU
              •  HD 40307 g, planet, semi-major axis: 0.60±0.03 AU

              PlanetsPlanets in the system

              This table lists all planets in the system HD 40307.

                HD 40307 b HD 40307 c HD 40307 d HD 40307 e HD 40307 f HD 40307 g
              Alternative planet names N/A N/A N/A N/A N/A N/A
              Description The HD 40307 system hosts four confirmed planets. The first three planets were discovered in 2008, planet f was discovered in 2012.edit The HD 40307 system hosts four confirmed planets. The first three planets were discovered in 2008, planet f was discovered in 2012.edit The HD 40307 system hosts four confirmed planets. The first three planets were discovered in 2008, planet f was discovered in 2012.edit The planet candidate HD 40307 e was announced in 2012 but was not confirmed in a follow-up analysis.edit The HD 40307 system hosts four confirmed planets. The first three planets were discovered in 2008, planet f was discovered in 2012.edit The planet candidate HD 40307 g would be a sub-Neptune planet located in the habitable zone of the star. Follow-up analysis of the HARPS data for the system did not confirm this planet candidate. The spectral window function has peaks near this period, and there is also the possibility that it is an alias of the star's activity cycle.edit
              Lists Confirmed planets Confirmed planets Confirmed planets Controversial Confirmed planets Controversial
              Mass [Mjup] 0.0120±0.0009edit 0.0202±0.0013edit 0.0275±0.0018edit 0.011±0.004edit 0.0114±0.0019edit 0.022±0.008edit
              Mass [Mearth] 3.8±0.3 6.4±0.4 8.7±0.6 3.5±1.4 3.6±0.6 7±3
              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] 4.3115±0.0003edit 9.6207±0.0012edit 20.419±0.005edit 34.6±0.2edit 51.56±0.14edit 198+6−9edit
              Semi-major axis [AU] 0.0475±0.0011edit 0.0812±0.0018edit 0.134±0.003edit 0.189+0.008−0.010edit 0.248±0.005edit 0.60±0.03edit
              Eccentricity < 0.1680edit < 0.1030edit < 0.1220edit 0.15+0.13−0.15edit < 0.3520edit 0.3±0.3edit
              Equilibrium temperature [K] N/A N/A N/A N/A N/A N/A
              Discovery method RV
              Discovery year 2008 2008 2008 2012 2012 2012
              Last updated [yy/mm/dd] 17/11/27

              starStars in the system

              This table lists all stars in the system HD 40307.

                HD 40307
              Alternative star names HIP 27887, TYC 8892-1247-1, GJ 2046, CD-60 1303, CPD-60 508, SAO 249388, 2MASS J05540421-6001245
              Mass [MSun] 0.770edit
              Radius [RSun] N/A
              Age [Gyr] N/A
              Metallicity [Fe/H] -0.31±0.03edit
              Temperature [K] 4977±59edit
              Spectral type K2.5V
              Visual magnitude 7.17edit

              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).

              PlutoMercuryMarsVenusEarthNeptuneUranusSaturnJupiterHD 40307 bHD 40307 cHD 40307 dHD 40307 eHD 40307 fHD 40307 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 zoneHD 40307 bHD 40307 cHD 40307 dHD 40307 eHD 40307 fHD 40307 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 https://ui.adsabs.harvard.edu/?#abs/2016A%26A...585A.134D
              history http://adsabs.harvard.edu/abs/2013A%26A...549A..48T

              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 7
              Kenneth J Cott kennethjcott(at)gmail.com 1
              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.