Planetary System
In 2001, the Anglo-Australian Planet Search team led by Chris Tinney announced the discovery of an extrasolar planet orbiting the star. An additional linear trend in the radial velocity data was noticed in 2006 that could have been due to another planet or to the stellar companion. In 2012, additional measurements allowed the detection of a second planet. A third possible planet with a period of 108 days was seen in the data however the false alarm probability was five percent.
| Companion |
Mass | Semimajor axis |
Orbital period |
Eccentricity | Radius |
|---|---|---|---|---|---|
| d | 0.30 MJ | 0.469 | 108.39 | 0.12 | — |
| b | 1.25 ± 0.15 MJ | 1.02 ± 0.03 | 349.7 ± 1.2 | 0.17 ± 0.06 | — |
| c | 5.3 ± 0.7 MJ | 6.8 ± 0.5 | 6005 ± 477 | 0.21 ± 0.07 | — |
Read more about this topic: HD 142
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