diff --git a/swe-glib/src/gswe-types.h b/swe-glib/src/gswe-types.h
index 38babaa..e3a15d7 100644
--- a/swe-glib/src/gswe-types.h
+++ b/swe-glib/src/gswe-types.h
@@ -42,6 +42,21 @@ typedef enum {
     GSWE_SIGN_PISCES
 } GsweZodiac;
 
+typedef enum {
+    GSWE_ASPECT_NONE,
+    GSWE_ASPECT_CONJUCTION,
+    GSWE_ASPECT_SEXTILE,
+    GSWE_ASPECT_SQUARE,
+    GSWE_ASPECT_TRINE,
+    GSWE_ASPECT_OPPOSITION,
+    GSWE_ASPECT_SEMISEXTILE,
+    GSWE_ASPECT_SEMISQUARE,
+    GSWE_ASPECT_QUINTILE,
+    GSWE_ASPECT_SESQUISQUARE,
+    GSWE_ASPECT_BIQUINTILE,
+    GSWE_ASPECT_QUINCUNX
+} GsweAspect;
+
 typedef enum {
     GSWE_ELEMENT_NONE,
     GSWE_ELEMENT_FIRE,
@@ -84,5 +99,24 @@ typedef struct {
     GsweZodiac fall_sign;
 } GswePlanetInfo;
 
+typedef enum {
+    GSWE_HOUSE_SYSTEM_NONE,
+    GSWE_HOUSE_SYSTEM_PLACIDUS,
+    GSWE_HOUSE_SYSTEM_KOCH,
+    GSWE_HOUSE_SISTEM_EQUAL
+} GsweHouseSystem;
+
+/**
+ * GsweHouseSystemInfo:
+ * @system: the house system's ID
+ * @sweph_id: the character value that represents this house system in the Swiss Ephemeris library
+ * @name: the name of this house system
+ */
+typedef struct {
+    GsweHouseSystem system;
+    gchar sweph_id;
+    gchar *name;
+} GsweHouseSystemInfo;
+
 #endif /* __SWE_GLIB_GSWE_PLANETS_H__ */