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diff --git a/2409/CH2/EX2.12/Ex2_12.sce b/2409/CH2/EX2.12/Ex2_12.sce
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+
+//Variable Declaration
+
+n=14.23304826  //Mean Motion (rev/day)
+M0=246.6853    //Mean Anomaly (degrees)
+t0=223.79688452 //Time of anomaly
+
+//Calculation
+
+T = (t0-(M0/(n*360)))  //Time of perigee passage
+
+//Result
+printf("The time of perigee passage for NASA elements is : %.4f days",T)