Index: trunk/ippTools/src/stacktoolConfig.c
===================================================================
--- trunk/ippTools/src/stacktoolConfig.c	(revision 28681)
+++ trunk/ippTools/src/stacktoolConfig.c	(revision 29283)
@@ -172,4 +172,5 @@
     psMetadataAddStr(addsumskyfileArgs, PS_LIST_TAIL, "-hostname", 0,            "define hostname", 0);
     psMetadataAddF32(addsumskyfileArgs, PS_LIST_TAIL, "-good_frac",  0,            "define %% of good pixels", NAN);
+    psMetadataAddF64(addsumskyfileArgs, PS_LIST_TAIL, "-mjd_obs",  0,            "define mjd_obs (average mjd_obs of inputs)", NAN);
     psMetadataAddS16(addsumskyfileArgs, PS_LIST_TAIL, "-fault",  0,            "set fault code", 0);
     psMetadataAddS16(addsumskyfileArgs, PS_LIST_TAIL, "-quality",  0,            "set quality", 0);