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Table 3.
Orbital parameters of the two-planet system GJ 253 derived from DRS and SERVAL-NZP data.
DRS data fit |
SERVAL-NZP data fit |
|||
---|---|---|---|---|
Parameter | GJ 253 b | GJ 253 c | GJ 253 b | GJ 253 c |
P [d] | 14.073![]() |
95.889![]() |
14.071![]() |
95.870![]() |
K [m s−1] | 4.14![]() |
2.55![]() |
3.77![]() |
2.65![]() |
e | 0.087![]() |
0.258![]() |
0.081![]() |
0.232![]() |
ω [deg] | 118.6![]() |
217.5![]() |
151.7![]() |
200.9![]() |
M0 [deg] | 234.8![]() |
254.6![]() |
190.8![]() |
269.6![]() |
a [au] | 0.10806![]() |
0.38838![]() |
0.10805![]() |
0.38833![]() |
m sin i [Mjup] | 0.0439![]() |
0.0498![]() |
0.0400![]() |
0.0521![]() |
γHARPS-pre [m s−1] | 39977.20![]() |
−0.23![]() |
||
γHARPS-pre [m s−1] | 39991.06![]() |
0.41![]() |
||
σHARPS-pre [m s−1] | 1.77![]() |
1.46![]() |
||
σHARPS-pre [m s−1] | 0.90![]() |
0.37![]() |
||
wrms [m s−1] | 1.79 | 1.67 | ||
−lnℒ | 454.00 | 437.544 | ||
Δlnℒ | 180.00 | 185.99 |
Notes. All orbital elements are Jacobi orbital elements and are valid for the first HARPS observational epoch, which is BJD = 2 452 984.733.
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