Table 8.
Orbital elements from the MCMC fit of TWA 22 relative orbit, compared to the last orbit determination by Bonnefoy et al. (2009).
| Parameter | This work | Bonnefoy et al. (2009) |
|---|---|---|
| a (au) | 
|
1.77 ± 0.04 |
| P (yr) | 5.35 ± 0.04 | 5.15 ± 0.09 |
| e | 0.13 ± 0.02 | 0.10 ± 0.04 |
| i (°) | 22 ± 6 | 27 ± 5 |
| Ω (°) | 129 or −51 ±18 | 135 ± 1 |
| ω (°) | 106 or −74 ±17 | 100 ± 10 |
| tp (yr, AD) | 2006.04 ± 0.07 | 2006.04 ± 0.01 |
Notes. The uncertainties on the fitted parameters correspond to the 68% interval of confidence of the distribution probabilities (see Appendix B). The astrometric data only allow determination of the couple (Ω, ω) modulo π.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.