Question/feature request: exporting object state with and at the observations

[void4]

When I load an object in find_orb, I can step with the up and down keys through the individual observations and see the state of the object at that particular point in time.

I'm interested in using find_orb/fo to export the calculated distances to the observer and the sun - Delta and r - to associate them with the actual observed magnitude at the time of the observations. Unfortunately there seems to exist no option to export this data, (with fo: to include it with each observation in total.json). Creating ephemerides with either find_orb or fo only seems to allow a fixed step size and the observations may be spaced very irregularly.

I want to create a chart of observed comet magnitudes vs calculated distances and this would be very useful for that.