diff --git a/DP2/100_How_to_use_RSP_tools/102_Catalog_access/102_3_Table_joins_with_TAP.ipynb b/DP2/100_How_to_use_RSP_tools/102_Catalog_access/102_3_Table_joins_with_TAP.ipynb
index 7791f4a6..4f04f6fc 100644
--- a/DP2/100_How_to_use_RSP_tools/102_Catalog_access/102_3_Table_joins_with_TAP.ipynb
+++ b/DP2/100_How_to_use_RSP_tools/102_Catalog_access/102_3_Table_joins_with_TAP.ipynb
@@ -271,7 +271,7 @@
    "source": [
     "## 3. Use case: moving objects\n",
     "\n",
-    "All of the Solar System catalogs are joinable to each other on identifiers `diaSourceId` (individual detections in the difference images), `ssObjectId` (associations of detections into single moving objects)."
+    "All of the Solar System catalogs are joinable to each other on identifiers `diaSourceId` (individual detections in the difference images), `ssObjectId` (associations of detections for single moving objects), and `designation` or `unpacked_primary_provisional_designation` (equivalent to each other). For further examples of Solar System table joins, see tutorials 201.07 SSObject table, 201.08 SSSource table, 201.09 MPC_orbits table, 201.15 Current_identifications table, and 201.16 Numbered_identifications table."
    ]
   },
   {