Index: kstars/skyobjects/kscomet.cpp
===================================================================
--- kstars/skyobjects/kscomet.cpp
+++ kstars/skyobjects/kscomet.cpp
@@ -54,6 +54,7 @@
                  dms _Node, double Tp, float _M1, float _M2, float _K1, float _K2)
     : KSPlanetBase(_s, imfile), JD(_JD), q(_q), e(_e), M1(_M1), M2(_M2), K1(_K1), K2(_K2), i(_i), w(_w), N(_Node)
 {
+    Q_UNUSED(JD)
     setType(SkyObject::COMET);
 
     //Find the Julian Day of Perihelion from Tp