Table 1.
Summary of the inferred best-fit values of the model and the (osculating) orbital parameters for S2 and G2 within the RAR model (fermion mass 56 keV, DM core mass Mc = 3.5 × 106 M⊙) and the massive BH model (BH mass MBH = 4.075 × 106 M⊙).
| Parameter | S2 |
G2 |
||
|---|---|---|---|---|
| RAR | BH | RAR | BH | |
| Semimajor axis, a (as) | 0.1252 | 0.1252 | 1.0960 | 1.1941 |
| Eccentricity, e | 0.8866 | 0.8863 | 0.9823 | 0.9853 |
| Distance to pericenter, rp (as) | 0.0142 | 0.0143 | 0.0194 | 0.0180 |
| Distance to apocenter, ra (as) | 0.2361 | 0.2362 | 2.1725 | 2.3701 |
| Argument of pericenter, ω (°) | 66.7724 | 66.4697 | 81.8391 | 82.0001 |
| Inclination, i (°) | 134.3533 | 134.3505 | 121.8993 | 119.1000 |
| Ascending node, Ω (°) | 228.0240 | 227.9681 | 50.8398 | 50.7782 |
| X0 (mas) | −0.1557 | −0.0830 | 0.0248 | 0.0251 |
| Y0 (mas) | 2.5527 | 2.4893 | −0.0160 | −0.0140 |
| Orbital period, P (yr) | 16.0539 | 16.0506 | 416.3400 | 470.1610 |
 |
1.5964 | 1.8004 | 33.3339 | 83.9950 |
 |
6.3411 | 7.2332 | 26.8419 | 11.2646 |
 |
1.2799 | 1.0421 | 0.9960 | 26.3927 |
 |
3.0725 | 3.3586 | 20.3906 | 40.5507 |
Notes. We refer to Appendix C for details of the definition of the parameters and the fitting procedure.
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