Deprecated TimingModel.ordered_params.

CHANGELOG-unreleased.md

@@ -12,7 +12,7 @@ the released changes.
 - Third-order Roemer delay terms to ELL1 model
 - Made the addition of a TZR TOA (`AbsPhase`) in the `TimingModel` explicit in `Residuals` class.
 - Updated `CONTRIBUTING.rst` with the latest information.
-- Made `TimingModel.params` and `TimingModel.ordered_params` identical.
+- Made `TimingModel.params` and `TimingModel.ordered_params` identical. Deprecated `TimingModel.ordered_params`.
 ### Added
 - Third-order Roemer delay terms to ELL1 model
 - Options to add a TZR TOA (`AbsPhase`) during the creation of a `TimingModel` using `ModelBuilder.__call__`, `get_model`, and `get_model_and_toas`

src/pint/models/timing_model.py

@@ -500,18 +500,24 @@ def __getattr__(self, name):
         )
 
     @property_exists
-    def params(self):
+    def params_ordered(self):
         """List of all parameter names in this model and all its components.
-        This is the same as `params_ordered`."""
+        This is the same as `params`."""
 
-        # Historically, this was different from `params_ordered` because Python
+        # Historically, this was different from `params` because Python
         # dictionaries were unordered until Python 3.7. Now there is no reason for
         # them to be different.
 
-        return self.params_ordered
+        warn(
+            "`TimingModel.params_ordered` is now deprecated and maybe removed in the future. "
+            "Use `TimingModel.params` instead. It gives the same output as `TimingModel.params_ordered`.",
+            DeprecationWarning,
+        )
+
+        return self.params
 
     @property_exists
-    def params_ordered(self):
+    def params(self):
         """List of all parameter names in this model and all its components, in a sensible order."""
 
         # Define the order of components in the list