X-ray source. An X-ray source in the cluster (SAX J1748.9-2021) was observed in outburst again in 1998 [@intZand99], 2001 [@intZand01], and 2005 [@Markwardt05]. @Pooley02b observed the cluster with  in 2000, identifying 24 sources within 2 core radii of the cluster. One (CX1) was positionally identified with a blue variable optical counterpart during the 1998 outburst [@Verbunt00], and with the outbursting LMXB in 2001 [@intZand01]. @Altamirano07 identified intermittent 442 Hz pulsations in both the 2001 and 2005 outbursts (the latter also identified by @Gavriil07). Thus, CX1 can be confidently held responsible for the 1998, 2001, and 2005 outbursts. We here identify a second transient luminous LMXB in NGC 6440, and confidently identify five outbursts from this transient during 2009 using its source position. Preliminary results were presented in @Heinke09d [@Heinke09f; @Heinke09e]; these results supersede those.

![ \[fig:image\] /ACIS-S images of NGC 6440 during the July 2009 outburst of NGC 6440 X-2 (upper left, 0.5-2.5 keV) and 13 days later (upper right, 0.3-7 keV). Below, we show a merged image from quiescent epochs in 2000 and 2003 (lower left, 0.3-7 keV), and an image from the 2001 outburst (lower right, 0.3-7 keV). The positions of NGC 6440 X-2 (red circle, 1”) and 