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Table 1
Keplerian orbits around the black hole.
| Parameters | Inward ejecta | Binary | Outward ejecta |
| =cloud | |||
|
|
|||
| Semi-major axis a | 6.5 × 1016 cm | 6.0 × 1016 cm | 1.1 × 1017 cm |
| Eccentricity e | 0.9384 | 0.628 | 0.459 |
| Orbital period | 137.9 years | 122.8 years | 300.4 years |
| Time of pericenter | 2013.5 | 2020.5 | 2012.1 |
| Pericenter distance | |||
| from black hole | 4.0 × 1015 cm | 2.2 × 1016 cm | 5.9 × 1016 cm |
References. Values for the cloud from Gillessen et al. (2012), values for the binary and outward ejecta this paper.
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