Table 1.
Astrometric positions of the observed objects.
| Object | Coordinates from literature | Coordinates from this work | Ref. to astrometry | ||
|---|---|---|---|---|---|
| RA (J2000) | Dec (J2000) | RA (J2000) | Dec (J2000) | ||
| MAXI J0637-430 | 06:36:23.7 | –42:52:04.1 | – | – | [1] |
| ( ± 0.2″) | ( ± 0.7″) | ||||
| MAXI J1348-630 | 13:48:12.79 | –63:16:28.48 | – | – | [2] |
| ( ± 0.03″) | ( ± 0.04″) | ||||
| SWIFT J1539.2-6227 | 15:39:11.96 | –62:28:02.30 | 15:39:11.92 | –62:28:02.37 | [3] |
| ( ± 0.5″) | ( ± 0.5″) | ( ± 0.07″) | ( ± 0.07″) | ||
| XTE J1650-500 | 16:50:00.92 | –49:57:44.1 | 16:50:00.95 | –49:57:44.25 | [4] |
| ( ± 0.31″) | ( ± 0.31″) | ( ± 0.05″) | ( ± 0.05″) | ||
| XTE J1726-476 | 17:26:49.30 | –47:38:25.5 | 17:26:49.31 | –47:38:25.63 | [5] |
| ( ± 0.1″) | ( ± 0.1″) | ( ± 0.05″) | ( ± 0.05″) | ||
| 4U 1755-338 | 17:58:39.84α | –33:48:27.64α | 17:58:40.01 | –33:48:28.80 | [6] |
| ( ± 2.8″) | ( ± 2.8″) | ( ± 0.04″) | ( ± 0.04″) | ||
| MAXI J1803-298 | 18:03:02.79178 | –29:49:49.41220 | – | – | [7] |
| ( ± 0.00003″) | ( ± 0.00007″) | ||||
| XTE J1817-330 | 18:17:43.53 | –33:01:07.57 | 18:17:43.51 | –33:01:07.68 | [8] |
| ( ± 0.2″) | ( ± 0.2″) | ( ± 0.04″) | ( ± 0.04″) | ||
| XTE J1818-245 | 18:18:24.43 | –24:32:17.96 | 18:18:24.43 | –24:32:18.08 | [9] |
| ( ± 0.2″) | ( ± 0.4″) | ( ± 0.08″) | ( ± 0.08″) | ||
| MAXI J1828-249 | 18:28:58.0748 | –25:01:45.7276 | – | – | [10] |
| ( ± 0.0004″) | ( ± 0.0006″) | ||||
Notes. α At the time of submission, an updated position has been provided in the on-line catalogue by Fortin et al. (2024) but we note that this corresponds to a star located ∼2 arcsec north of the true counterpart identified by Wachter & Smale (1998) and, therefore, these coordinates are not provided here. [1] Russell et al. (2019b), [2] Russell et al. (2019a), [3] Krimm et al. (2011), [4] Gallo et al. (2008), [5] Steeghs et al. (2005a), [6] Waddell et al. (2026), [7] Wood et al. (2023), [8] Rupen et al. (2006), [9] Rupen et al. (2005), [10] Gaia Collaboration (2021).
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