error in heliocentricZ

[jrob93]

Hi, just noting that the values of heliocentricZ in the SSSource table of DP0.3 seems to have incorrect values. I have a notebook demonstrating that the value of heliocentricZ is much bigger than expected from propagation of its orbit. I wonder if there is maybe a radians-degrees bug somewhere. I have included a summary figure from the nb which compares the heliocentric coords from SSSource (scatter) to the propagated values (lines). X and Y values are slightly off but probably just do to my simple test/choice of reference frame.

Possibly related to past issue #16

notebook: https://github.com/lsst-uk/lsst-adler/blob/sim_ephem/notebooks/simulated_asteroid_ephem_rsp.ipynb

[Gerenjie]

Ooh, interesting. I wonder if it's perhaps ecliptic vs equatorial coordinates...