Add some more exposure metadata fields

python/lsst/daf/butler/configs/dimensions.yaml

@@ -211,6 +211,35 @@ dimensions:
           doc: >
             Integer group identifier associated with this exposure by the
             acquisition system.
+        -
+          name: object
+          type: string
+          length: 64
+          doc: Object of interest for this observation or survey field name.
+        -
+          name: science_program
+          type: string
+          length: 64
+          doc: Observing program (survey or proposal) identifier.
+        -
+          name: tracking_ra
+          type: float
+          doc: >
+            Tracking ICRS Right Ascension of boresight in degrees. Can be NULL
+            for observations that are not on sky.
+        -
+          name: tracking_dec
+          type: float
+          doc: >
+            Tracking ICRS Declination of boresight in degrees. Can be NULL for
+            observations that are not on sky.
+        -
+          name: sky_angle
+          type: float
+          doc: >
+            Angle of the instrument focal plane on the sky in degrees. Can
+            be NULL for observations that are not on sky, or for observations
+            where the sky angle changes during the observation.
 
     skymap:
       doc: >