Thanks for the link — that is a very interesting discovery, although it looks like the primary, at ~0.45 solar masses is on the hefty end of the M-dwarf range.

In their abstract, they note that Jupiter-mass companions within 2.5 AU are roughly three times more common around FGK-dwarfs than around M-dwarfs. That conclusion fits in well with the core-accretion scenario for giant planet formation, which holds that giant planets should be much less frequently found around M-dwarfs.

We’ll get those v’s up on the console ASAP. The internal errors are very small on the measurments, that’s a very nice data set.

best,
Greg

:-D

There appear to be two sets of possible Jacobi elements.
My explanation is below.

Here are the Jacobi elements (i=90 deg):

Parameter Planet 1 Planet 2
Period (days) 352.499079 364.885297
Mass (M_Jup) 1.04735500 1.04735500
Mean Anomaly (deg) 0.00000000 0.00000068
eccentricity 0.69372876 0.20000000
omega (deg) 135.000000 134.999999

There’s something odd about the Jacobi elements, because I listed
the e=0.2 planet first using the following astrocentric elements:

Parameter Planet 1 Planet 2
Period (days) 365.067512 365.067512
Mass (M_Jup) 1.04735500 1.04735500
Mean Anomaly (deg) 0.00000000 0.00000000
eccentricity 0.20000000 0.70000000
omega (deg) 135.000000 135.000000

I reran the simulation just now, swapping the planet ordering.
Here are the resulting Jacobi elements:

Parameter Planet 1 Planet 2
Period (days) 361.398709 364.885297
Mass (M_Jup) 1.04735500 1.04735500
Mean Anomaly (deg) 0.00000069 0.00000000
eccentricity 0.19489662 0.70000000
omega (deg) 134.999999 135.000000

(I think it might be best to go with the second set of Jacobi parameters,
if you only have to use one set.)

Ultimately, I had to generate the system, but the e=0.2 and 0.7
and the planetary alignment were based on Albert’s system.