diff --git a/lib/noosfero/geo_ref.rb b/lib/noosfero/geo_ref.rb
new file mode 100644
index 0000000..f7cf2c4
--- /dev/null
+++ b/lib/noosfero/geo_ref.rb
@@ -0,0 +1,6 @@
+module Noosfero::GeoRef
+
+  KM_LAT = 111.2 # aproximate distance in km for 1 degree latitude
+  KM_LNG = 85.3 # aproximate distance in km for 1 degree longitude
+
+end
--
libgit2 0.21.2