Sahil Siddiq

Hi. To get both $r$ and $v$, you can do either of the following: ```python r, v = ephem.rv(ephem.epochs) ``` Or, you can do: ```python ep = ephem.sample(ephem.epochs) coords_x, coords_y,...

Hi. `ephem.sample` returns a `CartesianRepresentation` object. `CartesianRepresentation` is a class present in astropy.coordinates and not in poliastro. So you'll need to check astropy's docs. You'll find the relevant docs [here](https://docs.astropy.org/en/stable/api/astropy.coordinates.CartesianRepresentation.html#astropy.coordinates.CartesianRepresentation)...

Hi. Sorry for the late reply. > Thanks! I'm currently rewriting the hecto tutorial and will make sure this change makes its way into it, and that you are properly...