Free Access
Table 1
Relative positions of the HR 8799 planets.
| Epoch | HR 8799b | HR 8799c | HR8799d | HR8799e | Reference |
| Δα, Δδ (arcsec) | Δα, Δδ (arcsec) | Δα, Δδ (arcsec) | Δα, Δδ (arcsec) | ||
|
|
|||||
| 1998.83 | 1.411 ± 0.009, 0.986 ± 0.009 | ... | ... | ... | 1 |
| 2002.54 | 1.481 ± 0.023, 0.919 ± 0.017 | ... | ... | ... | 2 |
| 2004.53 | 1.471 ± 0.005, 0.884 ± 0.005 | –0.739 ± 0.005, 0.612 ± 0.005 | ... | ... | 3 |
| 2007.58 | 1.522 ± 0.003, 0.815 ± 0.003 | –0.672 ± 0.005, 0.674 ± 0.005 | –0.170 ± 0.008, –0.589 ± 0.008 | ... | 4 |
| 2007.81 | 1.512 ± 0.005, 0.805 ± 0.005 | –0.674 ± 0.005, 0.681 ± 0.005 | ... | ... | 3 |
| 2008.52 | 1.527 ± 0.004, 0.799 ± 0.004 | –0.658 ± 0.004, 0.701 ± 0.004 | –0.208 ± 0.004, –0.582 ± 0.004 | ... | 3 |
| 2008.61 | 1.527 ± 0.002, 0.801 ± 0.002 | –0.657 ± 0.002, 0.706 ± 0.002 | –0.216 ± 0.002, –0.582 ± 0.002 | ... | 3 |
| 2008.71 | 1.528 ± 0.003, 0.798 ± 0.003 | –0.657 ± 0.003, 0.706 ± 0.003 | –0.216 ± 0.003, –0.582 ± 0.003 | ... | 3 |
| 2008.89 | 1.532 ± 0.02, 0.796 ± 0.02 | –0.654 ± 0.02, 0.700 ± 0.02 | –0.217 ± 0.02, –0.608 ± 0.02 | ... | 5 |
| 2009.58 | ... | ... | ... | –0.299 ± 0.019, –0.217 ± 0.019 | 6 |
| 2009.58 | ... | ... | ... | –0.303 ± 0.013, –0.209 ± 0.013 | 6 |
| 2009.62 | 1.536 ± 0.01, 0.785 ± 0.01 | ... | ... | ... | 5 |
| 2009.70 | 1.538 ± 0.03, 0.777 ± 0.03 | –0.634 ± 0.03, 0.697 ± 0.03 | ... | ... | 5 |
| 2009.76 | 1.535 ± 0.02, 0.816 ± 0.02 | –0.636 ± 0.04, 0.692 ± 0.04 | –0.270 ± 0.07, –0.600 ± 0.07 | ... | 7 |
| 2009.77 | 1.532 ± 0.007, 0.783 ± 0.007 | –0.627 ± 0.007, 0.716 ± 0.007 | –0.241 ± 0.007, –0.586 ± 0.007 | –0.306 ± 0.007, –0.217 ± 0.007 | 5 |
| 2009.83 | ... | ... | ... | –0.304 ± 0.010, –0.196 ± 0.010 | 6 |
| 2010.53 | ... | ... | ... | –0.325 ± 0.008, –0.173 ± 0.008 | 6 |
| 2010.55 | ... | ... | ... | –0.324 ± 0.011, –0.175 ± 0.011 | 6 |
| 2010.83 | ... | ... | ... | –0.334 ± 0.010, –0.162 ± 0.010 | 6 |
References. (1) Lafrenière et al. (2009); (2) Fukagawa et al. (2009); (3) Marois et al. (2008); (4) Metchev et al. (2009); (5) Currie et al. (2011); (6) Marois et al. (2010); (7) This work. Only statistical errors have been considered in the table.
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.