Different way to return position and velocity in astronomy and orbital

[rdbisme]

Hello,

is there a reason why on pyorbital.astronomy.observer_position the position is given in terms of tuples while on pyorbital.orbital.Orbital.get_position is returned in terms of np.array?

I believe it would have been better to stick with same style. What do you think?

[mraspaud]

The reason behind this is that when we started pyorbital, the use case was one observer, many satellite positions.

But you're right, it should be made consistent. Pull request is welcome 😄