Update GMRT coordinates

CHANGELOG-unreleased.md

@@ -12,6 +12,7 @@ the released changes.
 - Moved altitude calculation to TOAs object, to make it only happen once
 - `WidebandDownhillFitter` now handles correlated noise correctly.
 - `pintk` Diff/Unc calculation now uses post-fit uncertainties.
+- Updated GMRT coordinates.
 ### Added
 - Plot whitened DM residuals in pintk.
 - `ssb_to_psb_xyz_ECL` and `ssb_to_psb_xyz_ICRS` are now cached

src/pint/data/runtime/observatories.json

@@ -275,12 +275,12 @@
         "clock_fmt": "tempo2",
         "clock_file": "",
         "itrf_xyz": [
-            1656342.3,
-            5797947.77,
-            2073243.16
+            1657059.36,
+            5797913.14,
+            2073026.71
         ],
         "fullname": "The Giant Metre-wave Radio Telescope (GMRT)",
-        "origin": "The origin of this data is unknown but as of 2021 June 8 it agrees exactly with\nthe values used by TEMPO and TEMPO2.\nGMRT does not need clock files as the data is recorded against UTC(gps)."
+        "origin": "Data provided by the InPTA team on 5 Jun 2026."
     },
     "ort": {
         "aliases": [

src/pint/observatory/topo_obs.py

@@ -233,7 +233,7 @@ def __repr__(self):
             if self.fullname != self.name
             else self.origin
         )
-        return f"TopoObs('{self.name}' ({','.join(aliases)}) at [{self.location.x}, {self.location.y} {self.location.z}]:\n{origin})"
+        return f"TopoObs('{self.name}' ({','.join(aliases)}) at [{self.location.x}, {self.location.y} {self.location.z}]:\n({origin})"
 
     @property
     def timescale(self):