It is possible to obtain the true anomaly of a planet this way:
In[1]:= PlanetData["Earth", "TrueAnomaly"]
Out[1]= Quantity[MixedMagnitude[{7, 18.8561}], MixedUnit[{"AngularDegrees", "ArcMinutes"}]]
However, the true anomaly is actually a function of time. So I suppose it gives the anomaly for the current moment. Is it possible to obtain this with a DateObject
(or similar) parameter? I already have an implementation of the Kepler equations, but I am curious if there is a simpler (and perhaps more precise) way to obtain the anomalies.