Um, I can't see the image. But also, if you're dealing with some sort of variable star wouldn't you be able to somehow find its period? Unless this is some weird, completely theoretical question...do you mean what is period for an eclipsing binary? I mean, for any light curve it's basically from one trough/peak to another (which is basically a cycle of variation). Right? I guess again, get up the image, so we can all see it better.
B: Crave the Wave, Environmental Chemistry, Robo-Cross, Meteorology, Physical Science Lab, Solar System, DyPlan (E and V), Shock Value
C: Microbe Mission, DyPlan (Earth's Fresh Waters), Fermi Questions, GeoMaps, Gravity Vehicle, Scrambler, Rocks, Astronomy
Grad: Writing Tests/Supervising (NY/MI)