Astronomy:List of multiplanetary systems
| radial velocity transit | timing direct detection |
From the total of 3,090 stars known to have exoplanets (as of January 1, 2020), there are a total of 676 known multiplanetary systems,[1] or stars with at least three confirmed planets, beyond the Solar System. The stars with the most confirmed planets are Sol (the Solar System's star, also referred to as the Sun) and Kepler-90 with 8 confirmed planets each, followed by TRAPPIST-1 with 7 planets. The star with the most candidate planets is HD 10180, with a maximum of 9 planets[2] – 6 confirmed and 3 candidates.
The table below contains information about the coordinates, spectral and physical properties, and number of confirmed planets. The two most important stellar properties are mass and metallicity because they determine how these planetary systems form. Systems with higher mass and metallicity tend to have more planets and more massive planets. However, although low metallicity stars tend to have fewer massive planets, particularly hot-Jupiters, they also tend to have a larger number of close in planets, orbiting at less than 1 AU.[3]
Multiplanetary systems
| Color indicates number of planets | ||||||
|---|---|---|---|---|---|---|
| 2 (x) | 3 | 4 | 5 | 6 | 7 | 8 |
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- Need to be added: TOI 1130, EPIC 249893012
Stars orbited by both planets and brown dwarfs
Stars orbited by objects on both sides of the 13 Jupiter mass dividing line.
- 54 Piscium (HD 3651)
- HD 168443
- Gliese 229 A
- Epsilon Indi
- HD 82943
- Pi Mensae
Planetary system statistics
| Planets per star |
Number of stars |
Star list | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 8 | 2 | |||||||||
| 7 | 1 | |||||||||
| 6 | 8 | |||||||||
| 5 | 21 |
| ||||||||
| 4 | 60 |
| ||||||||
| 3 | 154 |
| ||||||||
| 2 + unconfirmed | 22 |
|
See also
References
- ↑ Schneider, Jean (6 December 2016). "Interactive Extra-solar Planets Catalog". The Extrasolar Planets Encyclopaedia. http://exoplanet.eu/catalog.php. Retrieved 2016-12-06.
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedTuomiHD10180 - ↑ Brewer, John M.; Wang, Songhu; Fischer, Debra A.; Foreman-Mackey, Daniel (2018-10-24). "Compact multi-planet systems are more common around metal poor hosts". The Astrophysical Journal 867 (1): L3. doi:10.3847/2041-8213/aae710. Bibcode: 2018ApJ...867L...3B.
- ↑ Campante, T. L.; Barclay, T.; Swift, J. J.; Huber, D.; Adibekyan, V. Zh.; Cochran, W.; Burke, C. J.; Isaacson, H. et al. (2015). "An ancient extrasolar system with five sub-Earth-size planets". The Astrophysical Journal 799 (2): 170. doi:10.1088/0004-637X/799/2/170. Bibcode: 2015ApJ...799..170C.
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