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Table 2.
Orbital parameters and dynamical mass of HD 72946B.
Parameter | Unit | Median ± 1σ | Best fit |
---|---|---|---|
4cFitted parameters | |||
Semi-major axis a | mas | 249.1![]() |
250.4 |
![]() |
0.231![]() |
0.230 | |
![]() |
0.662![]() |
0.663 | |
Inclination i | ° | 59.3![]() |
59.6 |
PA of asc. node Ω | ° | −12.0![]() |
−11.8 |
Time periastron T0 | BJD | 2455956.7![]() |
2455955.1 |
RV semi-ampl. κA | m s−1 | 778.7![]() |
774.1 |
Syst. velocity γ | m s−1 | −203.2![]() |
−207.4 |
Parallax π | mas | 38.65 ± 0.12 | 38.66 |
SMA primary a1 | mas | 16.28![]() |
16.12 |
RV offset ZPSOPHIE | m s−1 | 90.6![]() |
96.2 |
RV jitter σELODIE | m s−1 | 24.4![]() |
22.9 |
RV jitter σSOPHIE | m s−1 | 16.1![]() |
12.67 |
Computed parameters | |||
M1 | M⊙ | 0.99 ± 0.03 | 1.01 |
M2 | MJ | 72.4 ± 1.6 | 72.5 |
Mass ratio M2/M1 | 0.070 ± 0.002 | 0.069 | |
Period P | yr | 15.91![]() |
15.90 |
Semi-major axis a | au | 6.45![]() |
6.48 |
Eccentricity e | 0.493![]() |
0.493 | |
Arg. periastron ω | ° | 250.7 ± 1.7 | 250.9 |
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