Gliese 667
The planetary system Gliese 667 hosts at least 7 planets. Note that the system is a multiple star system. It hosts at least 3 stellar components.
| System parameters | |
|---|---|
| Primary system name | Gliese 667 |
| Alternative system names | N/A |
| Right ascension | 17 18 57 |
| Declination | -34 59 23 |
| Distance [parsec] | 6.97 |
| Distance [lightyears] | 22.7 |
| Number of stars in system | 3 |
| Number of planets in system | 7 |
Image
This artist's impression shows the view from the exoplanet Gliese 667 C d looking towards the planet's parent star (Gliese 667 C). In the background to the right the more distant stars in this triple system (Gliese 667 A and Gliese 667 B) are visible and to the left in the sky one of the other planets, the newly discovered Gliese 667 Ce, can be seen as a crescent. A record-breaking three planets in this system are super-Earths lying in the zone around the star where liquid water could exist, making them possible candidates for the presence of life. This is the first system found with a fully packed habitable zone. Credit: ESO/M. Kornmesser
Architecture 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
- Stellar binary, 42.1 days
Gliese 667 A, stellar object- Gliese 667 B, stellar object
- Gliese 667 C, stellar object
Gliese 667 C b, planet, semi-major axis: 0.051 AU- Gliese 667 C h, planet, semi-major axis: 0.089 AU
- Gliese 667 C c, planet, semi-major axis: 0.125 AU
- Gliese 667 C f, planet, semi-major axis: 0.156 AU
- Gliese 667 C e, planet, semi-major axis: 0.213 AU
- Gliese 667 C d, planet, semi-major axis: 0.28 AU
- Gliese 667 C g, planet, semi-major axis: 0.55 AU
Planets in the system
This table lists all planets in the system Gliese 667.
| Gliese 667 C b | Gliese 667 C h | Gliese 667 C c | Gliese 667 C f | Gliese 667 C e | Gliese 667 C d | Gliese 667 C g | |
|---|---|---|---|---|---|---|---|
| Alternative planet names | GJ 667 C b, HR 6426C b | GJ 667C h, HR 6426C h | GJ 667C c, HR 6426C c | GJ 667C f, HR 6426C f | GJ 667C e, HR 6426C e | GJ 667 C d, HR 6426 C d | GJ 667 C g, HR 6426 C g |
| Description | Gliese 667 is a nearby triple star system in the constellation Scorpius, about 22 light years away. The star Gliese 667 C hosts at least six planets. Three of them, all Super-Earths, are located in the habitable zone. The habitable zone is so densely packed that any additional planet is likely to destabilize the system. This planet, Gliese 667 C b, is located too close to the star and not in the habitable zone. | Gliese 667 is a nearby triple star system in the constellation Scorpius, about 22 light years away. The star Gliese 667 C hosts at least six planets. Three of them, all Super-Earths, are located in the habitable zone. The habitable zone is so densely packed that any additional planet is likely to destabilize the system. This planet, Gliese 667 C h has yet to be confirmed. | Gliese 667 is a nearby triple star system in the constellation Scorpius, about 22 light years away. The star Gliese 667 C hosts at least six planets. Three of them, all Super-Earths, are located in the habitable zone. The habitable zone is so densely packed that any additional planet is likely to destabilize the system. This planet, Gliese 667 C c, is located on the inner edge of the habitable zone. | Gliese 667 is a nearby triple star system in the constellation Scorpius, about 22 light years away. The star Gliese 667 C hosts at least six planets. Three of them, all Super-Earths, are located in the habitable zone. The habitable zone is so densely packed that any additional planet is likely to destabilize the system. This planet, Gliese 667 C f, is right in the middle of the habitable zone. | Gliese 667 is a nearby triple star system in the constellation Scorpius, about 22 light years away. The star Gliese 667 C hosts at least six planets. Three of them, all Super-Earths, are located in the habitable zone. The habitable zone is so densely packed that any additional planet is likely to destabilize the system. This planet, Gliese 667 C e, is close the outer edge of the habitable zone. | Gliese 667 is a nearby triple star system in the constellation Scorpius, about 22 light years away. The star Gliese 667 C hosts at least six planets. Three of them, all Super-Earths, are located in the habitable zone. The habitable zone is so densely packed that any additional planet is likely to destabilize the system. This planet, Gliese 667 C d, is located outside the habitable zone and therefore to cool to host liquid water on its surface. | Gliese 667 is a nearby triple star system in the constellation Scorpius, about 22 light years away. The star Gliese 667 C hosts at least six planets. Three of them, all Super-Earths, are located in the habitable zone. The habitable zone is so densely packed that any additional planet is likely to destabilize the system. This planet, Gliese 667 C g, is outside the habitable zone and cannot host liquid water on its surface. |
| Lists | Confirmed planets; Planets in binary systems, S-type | Controversial; Planets in binary systems, S-type | Confirmed planets; Planets in binary systems, S-type | Controversial; Planets in binary systems, S-type | Controversial; Planets in binary systems, S-type | Controversial; Planets in binary systems, S-type | Controversial; Planets in binary systems, S-type |
| Mass [Mjup] | 0.018±0.004 | 0.003±0.003 | 0.012 | 0.008±0.004 | 0.008 | 0.016 | 0.014 |
| Mass [Mearth] | 5.6 | 1.1 | 3.8 | 2.7 | 2.7 | 5.1 | 5 |
| Radius [Rjup] | N/A | 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 | N/A |
| Orbital period [days] | 7.2004±0.0017 | 16.95 | 28.14 | 39.03 | 62.2±0.6 | 91.6 | 256 |
| Semi-major axis [AU] | 0.051 | 0.089 | 0.125 | 0.156 | 0.213 | 0.28 | 0.55 |
| Eccentricity | 0.13 | 0.06 | 0.02 | 0.03 | 0.02 | 0.03 | 0.08 |
| Equilibrium temperature [K] | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Discovery method | RV | ||||||
| Discovery year | 2009 | 2013 | 2009 | 2013 | 2013 | 2013 | 2013 |
| Last updated [yy/mm/dd] | 13/06/25 | ||||||
Stars in the system
This table lists all stars in the system Gliese 667.
| Gliese 667 A | Gliese 667 B | Gliese 667 C | |
|---|---|---|---|
| Alternative star names | HR 6426 A, HIP 84709 A | HR 6426 B, HIP 84709 B | HR 6426 C |
| Mass [MSun] | 0.730 | 0.690 | 0.33±0.02 |
| Radius [RSun] | 0.760 | 0.700 | 0.410 |
| Age [Gyr] | 6±4 | 6±4 | > 2.0000 |
| Metallicity [Fe/H] | -0.59±0.10 | -0.59±0.10 | N/A |
| Temperature [K] | N/A | N/A | 3350±50 |
| Spectral type | N/A | N/A | M1.5V |
| Visual magnitude | N/A | N/A | 10.22 |
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).
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.
Scientific references and contributors
Links to scientific papers and other data sources
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 | Number of commits | |
|---|---|---|
| Andrew Tribick | ajtribick(at)googlemail.com | 2 |
| Hanno Rein | hanno(at)hanno-rein.de | 7 |
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.
Data 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 useful.
Corrections
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.