Table 13.
Parameters of the transformations between ICRF3 (S/X band catalog) and other frames, including rotation, glide (dipole terms), and quadrupole terms (all in microarcseconds), plus the number of sources involved in the calculations.
| Reference frame |
ICRF3 catalog |
||||
|---|---|---|---|---|---|
| Parameters | ICRF2 | ICRF2GA | Gaia-CRF2 | K band | X/Ka band |
| Nb sources | |||||
| common | 3414 | 3414 | 2983 | 793 | 638 |
| outliers | 496 | 382 | 371 | 25 | 82 |
| used | 2918 | 3032 | 2612 | 768 | 556 |
| Rotation | |||||
| R1 | 8 ± 4 | 16 ± 4 | −22 ± 8 | 3 ± 8 | −22 ± 8 |
| R2 | 15 ± 4 | 19 ± 4 | 23 ± 8 | −10 ± 8 | 3 ± 8 |
| R3 | 0 ± 3 | −5 ± 3 | −5 ± 7 | −6 ± 4 | 4 ± 5 |
| Glide (dipole) | |||||
| D1 | −22 ± 4 | −18 ± 3 | −13 ± 8 | 8 ± 7 | 1 ± 7 |
| D2 | −63 ± 4 | 4 ± 3 | −4 ± 8 | −36 ± 7 | −32 ± 7 |
| D3 | −90 ± 4 | −39 ± 4 | 12 ± 8 | −19 ± 8 | 314 ± 8 |
| Quadrupole | |||||
| E20 | 43 ± 4 | 39 ± 4 | 35 ± 9 | 16 ± 9 | −75 ± 10 |
| M20 | 5 ± 4 | 3 ± 3 | 1 ± 8 | 31 ± 6 | −207 ± 7 |
 |
−11 ± 5 | −13 ± 4 | 9 ± 10 | 20 ± 8 | 34 ± 9 |
 |
3 ± 5 | −2 ± 4 | 13 ± 10 | 51 ± 9 | −35 ± 9 |
 |
−1 ± 4 | −1 ± 4 | −3 ± 10 | −16 ± 8 | −2 ± 8 |
 |
−5 ± 4 | −6 ± 4 | 6 ± 10 | 25 ± 9 | 8 ± 9 |
 |
1 ± 2 | −1 ± 2 | 1 ± 5 | 8 ± 3 | 6 ± 3 |
 |
3 ± 2 | 2 ± 2 | 2 ± 5 | 7 ± 3 | −3 ± 4 |
 |
−3 ± 2 | −1 ± 2 | 3 ± 5 | −12 ± 4 | 7 ± 5 |
 |
2 ± 2 | 1 ± 2 | −5 ± 5 | 5 ± 4 | −7 ± 5 |
Notes. ICRF2GA denotes the equivalent of ICRF2 that was reproduced after incorporating Galactic acceleration in the modeling.
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.