[coords] Question - Time domain coordinates and frames

[CresitelloDittmar, Mark]

One more point on this:

On Thu, Apr 12, 2018 at 5:18 PM, Arnold Rots <arots at cfa.harvard.edu> wrote:

> No, the timeOrigin is only REQUIRED in a TimeFrame if it is referenced by
> a TimeOffset.
> So, *both the TimeOffset and the timeOrigin can (and should!) refer to
> the same TimeFrame*.
> (they should, because specifying the origin in a different TimeFrame is
> asking for trouble)
>
>
What I'm taking away from this is:
  + TimeOffset and TimeOrigin are in the same Frame..
  + the TimeOffset has/requires a timeOrigin
  + the TimeOrigin should ignore the timeOrigin

>From this, I would have to conclude that the timeOrigin is a property of
the TimeOffset, not the Frame.


> It does mean that TimeOffsets that use different timeOrigins need to
> reference different TimeFrames.
> That is not a problem, since most TimeOffset-based time series will use
> the same timeOrigin.
>

The question is more if they are *considered *to be in the same frame.
If I have 2 TimeOffsets,  T1 and T2, both in "TDB", "BARYCENTER"... are
they in the same frame?  even if they have different offsets?

Mark
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