NICER observation list: Target ID 366901

We propose a ToO observation of Galactic X-ray transients aimed at discovering accreting millisecond X-ray pulsars. NuSTAR and NICER represent ideal observatories capable of fulfilling such goal, which will help increasing the knowledge of the evolutionary paths followed by NS, and possibly lead to breakthrough discoveries of extremely quickly rotating objects. We propose a 40 ks observations of newly discovered X-ray transients. Criteria set to maximise the probability of discovering new sources of this class, based on the X-ray flux (> 7 and 10 mCrab, in 2-10 and 20-40 keV energy bands, respectively), the spectral shape (a power law with index 1.5-2.5), and the absence of an alternative identification, will be used to trigger the proposed observations among newly discovered transients.