NICER observation list: Target ID 771701

Transient black hole binaries (BHB) undergo X-ray outbursts that display a plethora of physical phenomena on human timescales, typically lasting several months. This includes rapid changes in both the spectral and timing data of these systems. We request a total of 500 ks of NuSTAR time to monitor any known or new BHB system that goes into an outburst during Cycle 10, triggering ~18 observations to sample all accretion states. We also request 50 ks of quasi-simultaneous NICER time to support this campaign by covering the soft energy band and providing fast timing observations. The key goal is to provide a comprehensive view of the properties of accreting BHs, including robust measurements of their mass and spin via spectral-timing modeling of the X-ray data.