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Upsilon Andromedae

The planetary system Upsilon Andromedae 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 Upsilon Andromedae
Alternative system names N/A
Right ascension 01 36 48
Declination +41 24 38
Distance [parsec] 13.47edit
Distance [lightyears] 43.9
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
    •  Upsilon Andromedae A, stellar object
      •  Upsilon Andromedae A b, planet, semi-major axis: 0.0594 AU
        •  Upsilon Andromedae A c, planet, semi-major axis: 0.832 AU
          •  Upsilon Andromedae A d, planet, semi-major axis: 2.53 AU
            •  Upsilon Andromedae A e, planet, semi-major axis: 5.25 AU
            •  Upsilon Andromedae B, stellar object

            PlanetsPlanets in the system

            This table lists all planets in the system Upsilon Andromedae.

              Upsilon Andromedae A b Upsilon Andromedae A c Upsilon Andromedae A d Upsilon Andromedae A e
            Alternative planet names ups And A b, ups And b ups And A c, ups And c ups And A d, ups And d ups And A e, ups And e
            Description The binary star Upsilon Andromedae is only 40 light years away from Earth. The system hosts at least 3 jovian planets. It was the first multiple planet system to be discovered around a main sequence star.edit The binary star Upsilon Andromedae is only 40 light years away from Earth. The system hosts at least 3 jovian planets. It was the first multiple planet system to be discovered around a main sequence star.edit The binary star Upsilon Andromedae is only 40 light years away from Earth. The system hosts at least 3 jovian planets. It was the first multiple planet system to be discovered around a main sequence star.edit The detection of the fourth planet in the Upsilon Andromedae system has been questioned due to the presence of an unaccounted-for instrumental shift in earlier reductions of the radial velocity data from the Lick observatory.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] 1.780edit 10.78edit 8.86edit 1.059edit
            Mass [Mearth] 566 3427 2817 337
            Radius [Rjup] N/A N/A N/A N/A
            Radius [Rearth] N/A N/A N/A N/A
            Orbital period [days] 4.62edit 241edit 1283edit 3849edit
            Semi-major axis [AU] 0.0594edit 0.832edit 2.53edit 5.25edit
            Eccentricity 0.0118edit 0.247edit 0.249edit 0.0054edit
            Equilibrium temperature [K] 1440edit 376edit 218edit 150.6edit
            Discovery method RV
            Discovery year 1996 1999 1999 2010
            Last updated [yy/mm/dd] 15/03/16

            starStars in the system

            This table lists all stars in the system Upsilon Andromedae.

              Upsilon Andromedae A Upsilon Andromedae B
            Alternative star names ups And A ups And B
            Mass [MSun] 1.270edit 0.1900edit
            Radius [RSun] 1.631edit N/A
            Age [Gyr] 3.10edit N/A
            Metallicity [Fe/H] 0.0900edit N/A
            Temperature [K] 6212edit N/A
            Spectral type F8 V N/A
            Visual magnitude 4.09edit 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).

            PlutoMercuryMarsVenusEarthNeptuneUranusSaturnJupiterUpsilon Andromedae A bUpsilon Andromedae A cUpsilon Andromedae A dUpsilon Andromedae A 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 zoneUpsilon Andromedae A bUpsilon Andromedae A cUpsilon Andromedae A dUpsilon Andromedae A e

            referencesScientific references and contributors

            Links to scientific papers and other data sources

            history http://adsabs.harvard.edu/abs/2015ApJ...798...46D
            history http://phl.upr.edu/projects/habitable-exoplanets-catalog/data/database

            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 3
            Hanno Rein hanno(at)hanno-rein.de 4
            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.