added R_E (#24)

bryanwweber · Mar 27, 2024 · b5a2d4f · b5a2d4f
1 parent bb1d8a5
commit b5a2d4f
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diff --git a/time-since-periapsis-and-keplers-equation/elliptical-orbit-time-in-shadow.md b/time-since-periapsis-and-keplers-equation/elliptical-orbit-time-in-shadow.md
@@ -112,6 +112,7 @@ mu = 3.986004418E5 # km**3/s**2
 
 r_p = 6378 + 500 # km
 r_a = 6378 + 5000 # km
+R_E = 6378 # km
 e = (r_a - r_p) / (r_p + r_a)
 a = (r_a + r_p) / 2
 T = 2 * np.pi / np.sqrt(mu) * a**(3/2)