CME Interplanetary Transit Time Calculator
Space weather forecasting: Calculate Coronal Mass Ejection (CME) Sun-to-Earth transit time ($t_{\text{transit}}$), magnetohydrodynamic aerodynamic drag parameter ($\gamma$), and arrival shock velocity ($v_{\text{arr}}$) using the Drag-Based Model (DBM).
CME Launch & Solar Wind Environment
Coronagraph speed at 20 R_☉
Background heliospheric flow
Drag-Based Model (DBM) Parameters
Typical: 0.5–2.0 × 10⁻⁷ km⁻¹
Earth = 1.0 AU (149.6M km)
Earth Arrival & Impact Output
Estimated Transit Time:
--
hours (days)
Earth Arrival Speed v_arr:
--
km/s impact velocity
Average Travel Velocity:
--
km/s across 1 AU
Total Speed Variation Δv:
--
km/s deceleration/acceleration
| Target Distance: | -- |
| Initial Deceleration Rate a₀: | -- |
| Shock Front Mach Number M_ms: | -- |
| Space Weather Alert Level: | -- |
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