Table E.1.
Galactic centre positions.
| R.A. (J2000) | Dec. (J2000) | ref | |
|---|---|---|---|
| Xp9 | 52.0 | 47.3 | 1 |
| 43.21+61.3 | 51.95 | 47.2 | 2 |
| H I kinematic centre | 51.9 | 47.2 | 3 |
| Ne II kinematic centre | 52.14 | 46.4 | 4 |
| H92α ring centre | 52.0 | 46.9 | 5 |
| WISE | 51.95 | 47.2 | 6 |
| 2.2μm peak (R80) | 52.6 | 47.2 | 7 |
| 2.2μm peak (L90) | 52.3 | 46.2 | 8 |
Notes. Positions in J2000. The RA and Dec are given as the offset from RA = 09h55m00s, Dec = +69° 40′00″. 1: X-ray source in Iwasawa (2021); 2: Radio source in Rodriguez-Rico et al. (2004); 3: Radio kinematic centre of Weliachew et al. (1984); 4: Ne II kinematic centre with an ellipse ring fit of Achtermann & Lacy (1995); 5: H92α ring centre from Rodriguez-Rico et al. (2004); 6: WISE nuclear position of Jarrett et al. (2019); 7: 2.2 μm peak from Rieke et al. (1980); and 8: Lester et al. (1990). The positional errors are all ∼0.5″ except for 1.5″ for the declination of the 2.2 μm peak of Rieke et al. (1980).
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