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We present progenitor-star detections, light curves, and optical spectra ofSN2009ip and the 2009 optical transient in UGC2773 (U2773-OT), which were notgenuine SNe. Precursor variability in the decade before outburst indicates thatboth of the progenitor stars were LBVs. Their pre-outburst light curvesresemble the S Doradus phases that preceded giant eruptions of eta Carinae andSN1954J (V12 in NGC2403), with intermediate progenitor luminosities. HSTdetections a decade before discovery indicate that the SN2009ip and U2773-OTprogenitors were supergiants with likely initial masses of 50-80 Msun and$\ga$20 Msun, respectively. Both outbursts had spectra befitting known LBVs,although in different physical states. SN 2009ip exhibited a hot LBV spectrumwith characteristic speeds of 550 km/s, plus faster material up to 5000 km/s,resembling the slow Homunculus and fast blast wave of eta Carinae. U2773-OTshows a forest of narrow absorption and emission lines comparable to that of SDor in its cool state, plus [CaII] emission and an IR excess indicative ofdust, similar to SN2008S and N300-OT. [CaII] emission is probably tied to adusty pre-outburst environment, and not the outburst mechanism. SN2009ip andU2773-OT may provide a critical link between historical LBV eruptions, whileU2773-OT may provide a link between LBVs and SN2008S and N300-OT. Futuresearches will uncover more examples of precursor LBV variability of this kind,providing key clues that may help unravel the instability driving LBVs.

Discovery of Precursor LBV Outbursts in Two Recent Optical Transients: The Fitfully Variable Missing Links UGC 2773-OT and SN 2009ip