Eclipse timing variations of the primary eclipses of KIC 4862625 (filled circles). The observed times of each primary eclipse minus the calculated times for a linear ephemeris are shown vs. time (an " O −  C" diagram). The nine planetary transit events are indicated by vertical dashed lines. A single primary eclipse is missing from the sequence at BJD = 2,455,567.8 and another, at BJD = 2,455,947.8, is incomplete. For comparison, two simulated " O −  C" variations are also shown, one for a 1  M _J (squares) and the other for a 5  M _J (diamonds) respectively, and shifted vertically for clarity. Evidently, the circumbinary body's mass is less than 5  M _J.