NICER observation list: Target ID 359101

Eccentric, massive colliding wind binaries provide unique laboratories to study how shocked astrophysical plasmas simultaneously produce X-ray emitting gas and form dust under well constrained density, mach number and temperature conditions as the separation of the stars changes. The best studied example of a colliding wind binary shock laboratory is WR 140, a long-period, highly eccentric massive evolved binary in which wind-wind interactions generate variable emission from the X-ray to radio bands along with the periodic formation of dust near periastron. We propose weekly monitoring of WR 140 with \nicer\ through Cycle 2 to study the X-ray spectrum as the stars head towards apastron and the shock stablizes.