Add job.properties() method (#1252)

* Add job.properties() method

* add reno

qiskit_ibm_runtime/runtime_job.py

@@ -24,6 +24,7 @@
 
 from qiskit.providers.backend import Backend
 from qiskit.providers.jobstatus import JobStatus, JOB_FINAL_STATES
+from qiskit.providers.models import BackendProperties
 from qiskit.providers.job import JobV1 as Job
 
 # pylint: disable=unused-import,cyclic-import
@@ -429,6 +430,20 @@ def update_tags(self, new_tags: List[str]) -> List[str]:
                 "the job.".format(self.job_id())
             )
 
+    def properties(self, refresh: bool = False) -> Optional[BackendProperties]:
+        """Return the backend properties for this job.
+
+        Args:
+            refresh: If ``True``, re-query the server for the backend properties.
+                Otherwise, return a cached version.
+
+        Returns:
+            The backend properties used for this job, at the time the job was run,
+            or ``None`` if properties are not available.
+        """
+
+        return self._backend.properties(refresh, self.creation_date)
+
     def _set_status_and_error_message(self) -> None:
         """Fetch and set status and error message."""
         if self._status not in JOB_FINAL_STATES:

releasenotes/notes/job-properties-2b5c2f66c50d7d2d.yaml

@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    Added a new method :meth:`~qiskit_ibm_runtime.RuntimeJob.properties` which returns the 
+    backend properties of the job at the time the job was run. 
+