ADD: completed constants up to pluto

planet/constants.h

@@ -42,11 +42,11 @@
 #define E_VENUS     0.006772
 #define E_TERRE     0.0167086
 #define E_MARS      0.0934
-#define E_JUPITER
-#define E_SATURN
-#define E_URANUS
-#define E_NEPTUNE
-#define E_PLUTO
+#define E_JUPITER   0.0489
+#define E_SATURN    0.0565
+#define E_URANUS    0.04717
+#define E_NEPTUNE   0.008678
+#define E_PLUTO     0.2488
 
 // perihelion
 #define PER_MERCURE 4.60012e10