Update README.md

README.md

@@ -110,6 +110,7 @@ Contains the simulated physical parameters and lensing variables for each event.
 | `Planet_mass` | float64 | Mass of the planet (if present). |
 | `Planet_q` | float64 | Planet-to-star mass ratio. |
 | `Planet_s` | float64 | Projected separation of the planet. |
+| `alpha` | float64 | Trajectory angle (degrees)  |
 | `Planet_period` | float64 | Orbital period of the planet (years). |
 | `Planet_semimajoraxis` | float64 | Semimajor axis of the planet (AU). |
 | `Planet_orbphase` | float64 | Orbital phase of the planet (degrees). |