This summer, Subaru Telescope will welcome a new near-infrared spectrograph, NINJA, for its first on-sky engineering observations. NINJA is a new spectrograph designed for time-critical observations of rapidly evolving cosmic events, such as the electromagnetic counterparts of gravitational-wave sources.
A brief stellar eclipse hints that this 2002 XV93 has a thin atmosphere. It would be a first for any solar-system body farther from the sun than Pluto.