The architecture of the GJ 876 planetary system - Masses and orbital coplanarity for planets b and c

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Volume 496 / No 1 (March II 2009)

A&A, 496 1 (2009) 249-257

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Table 1:

Parameters from the coplanar analysis.
Orbital parameters
Parameter	Planet b	Planet c	Planet d
m	$\rm 2.57^{+0.06}_{-0.08}$ $M_{\rm Jup}$	$\rm0.80^{+0.02}_{-0.02}$ $M_{\rm Jup}$	$\rm 8.17^{+0.95}_{-0.93}$ $M_{\oplus}$
a (AU)	$\rm0.20688^{+0.00005}_{-0.00004}$	$\rm0.13062^{+0.00004}_{-0.00004}$	$\rm0.0208069^{+0.0000001}_{-0.0000004}$
e	$\rm0.0376^{+0.0022}_{-0.0019}$	$\rm0.2657^{+0.0022}_{-0.0017}$	0.0 (Fixed)
$\omega$ ( $\hbox{$^\circ$ }$ )	$\rm 184.0^{+2.8}_{-3.3}$	$\rm 197.3^{+0.4}_{-0.6}$	0.0 (Fixed)
M ( $\hbox{$^\circ$ }$ )	$\rm 167.3^{+3.8}_{-3.2}$	$\rm 311.6^{+1.0}_{-0.8}$	$\rm 311.8^{+4.4}_{-5.9}$
Parameter	Value
i ( $\hbox{$^\circ$ }$ )	$\rm 48.9^{+1.8}_{-1.6}$
$\Omega$ ( $\hbox{$^\circ$ }$ )	$\rm 251^{+16}_{-16}$
Fit information
Parameter	Value
$\chi ^{2}$	860.0
d.o.f.	843
Radial velocity rms (m s^-1)	4.2
Astrometry rms (mas)	0.9

Note: the orbital parameters are osculating and valid at HJD 2 452 490.0.

Source LaTeX | All tables | In the text

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