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Table 1
Observational details.
| Source | Program | Observation | Calibrator | Polarization | Beam size | Position | rms | σ s.−n. b | Estimated absolute position using FRMAP | |||
| code | date | angle | Angle | α 2000 | δ 2000 | Δα a | Δδ a | |||||
| (°) | (mas × mas) | (°) | ( ) |
() |
(h:m:s) | ( ) |
(mas) | (mas) | ||||
|
|
||||||||||||
| G24.78+0.08 | ES072 | 30 May 2013 | J2202+4216 | − 31 ± 4 | 10.4 × 4.0 | –36.14 | 4 | 8 | +18:36:12.563 | –07:12:10.787 | 0.4 | 3.7 |
| G25.65+1.05 | ES072 | 31 May 2013 | J2202+4216 | − 31 ± 4 | 11.9 × 3.5 | –39.94 | 2 | 35 | +18:34:20.900 | –05:59:42.098 | 2.3 | 18.3 |
| G29.86-0.04 | ES072 | 01 June 2013 | J2202+4216 | − 31 ± 4 | 9.0 × 3.6 | –40.71 | 4 | 6 | +18:45:59.572 | –02:45:01.573 | 8.3 | 172.5 |
| G35.03+0.35 | ES069 | 04 Nov. 2012 | J2202+4216 | − 30 ± 2 | 6.3 × 4.8 | –34.53 | 4 | 6 | +18:54:00.660 | +02:01:18.551 | 7.2 | 167.7 |
| G37.43+1.51 | ES072 | 02 June 2013 | J2202+4216 | − 31 ± 4 | 8.3 × 3.8 | –52.43 | 3 | 22 | +18:54:14.229 | +04:41:41.138 | 7.0 | 81.2 |
| G174.20-0.08 | ES069 | 04 Nov. 2012 | J0555+3948 | − 73 ± 5 | 7.7 × 4.3 | –28.78 | 4 | 5 | +05:30:48.020 | +33:47:54.611 | 0.7 | 1.0 |
| G213.70-12.6 | ES069 | 03 Nov. 2012 | J0555+3948 | − 73 ± 5 | 7.4 × 5.4 | –3.13 | 4 | 10 | +06:07:47.860 | –06:22:56.626 | 2.1 | 17.9 |
Notes.
(b)
Self-noise in the maser emission channels (e.g., Sault 2012).
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