a week), of which three were discussed above. The other two are April 15, 2007 and March 20, 2009. A period of 30.7 days ($\pm$0.3 days, from the uncertainties in the peak of the late October outburst), with reference date MJD 55040.5, reasonably predicts the peaks of the four well-studied outbursts. The model predicts missed outbursts on April 27 (weak activity is suggested by bulge scans on April 18-20), May 28 (a bulge scan detection occurred May 25, followed by a faint  detection June 4), and June 27 (no bulge scans conducted $\pm$10 days around this date). The bulge scan point in March is off the prediction by 7$\pm1$ days, indicating either that the outburst period has slightly decreased over time (as the April and May evidence also suggest), or that the March point is not a real outburst. Sensitive monitoring since Nov. 2 (up to Feb. 11, 2010) has not been possible due to solar constraints and an outburst of SAX J1748.9-2021 [@Suzuki10; @Patruno10b]. We show the bulge scan data in the relevant date range (and detections and upper limits from  and ) in Fig. \[fig:lcurve\]; see also @Altamirano09. We use an absorbed power-law of photon index 2 to 