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Table 1
Orbital parameters of β Pic b assuming a transit in November 1981.
| Parameter | Low | High | Units |
| eccentricity | eccentricity | ||
|
|
|||
| χ 2 | 36.5 | 23.8 | |
|
|
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| Period P | 17.97 ± 0.08 | 36.38 ± 0.13 | years |
| Semi-major | |||
| axis a | 8.20 ± 0.06 | 13.18 ± 0.09 | au |
| Eccentricity e | 0.118 ± 0.020 | 0.323 ± 0.005 | |
| Longitude of | |||
| periastron ϖ | –108 ± 28 | 87.0±5.6 | degrees |
| ecosϖ | –0.04 ± 0.06 | –0.04 ± 0.03 | |
| esinϖ | –0.097± 0.006 | 0.319 ± 0.004 | |
| Star mass Ms | 1.71 ± 0.04 | 1.73 ± 0.04 | M ⊙ |
|
|
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| Range of epochs | 15/Jul/2017 | 1/Jan/2018 | |
| for the | – | – | |
| next transit (2σ) | 1/Mar/2018 | 30/Jun/2018 | |
Notes. Error bars are 1σ intervals corresponding to 68% of the posterior distributions, except for the epoch of the next transit given with 2σ intervals. The χ2 are for 30 degrees of freedom (34 measurements and 4 free parameters).
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