diff --git a/src/neospy/spice.py b/src/neospy/spice.py
index ad7b421..8dd67f1 100644
--- a/src/neospy/spice.py
+++ b/src/neospy/spice.py
@@ -54,7 +54,6 @@ class SpiceKernels:
     This allows for the loading of additional spice kernels along with querying.
     """
 
-    _constants: Optional[dict[str, float]] = None
     _name_cache: dict = {}
 
     @classmethod
diff --git a/src/neospy/ztf.py b/src/neospy/ztf.py
index 42d6e7c..e2cd6bd 100644
--- a/src/neospy/ztf.py
+++ b/src/neospy/ztf.py
@@ -13,7 +13,6 @@
     "ztf.ztf_current_path_raw": "ZTF Raw Product Paths",
     "ztf.ztf_current_path_ref": "ZTF Reference Product Paths",
     "ztf.ztf_current_path_sci": "ZTF Science Product Paths",
-    "ztf_objects": "ZTF Objects",
     "ztf_objects_dr16": "ZTF Data Release 16 Objects",
     "ztf_objects_dr17": "ZTF Data Release 17 Objects",
     "ztf_objects_dr18": "ZTF Data Release 18 Objects",