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HESS J0632+057 belongs to a rare subclass of binary systems which emitsgamma-rays above 100 GeV. It stands out for its distinctive high-energy lightcurve, which features a sharp ``primary'' peak and broader ``secondary'' peak.We present the results of contemporaneous observations by NuSTAR and VERITASduring the secondary peak between Dec. 2019 and Feb. 2020, when the orbitalphase ($\phi$) is between 0.55 and 0.75. NuSTAR detected X-ray spectralevolution, while VERITAS detected TeV emission. We fit a leptonicwind-collision model to the multi-wavelength spectra data obtained over thefour NuSTAR and VERITAS observations, constraining the pulsar spin-downluminosity and the magnetization parameter at the shock. Despite long-termmonitoring of the source from Oct. 2019 to Mar. 2020, the MDM observatory didnot detect significant variation in H$\alpha$ and H$\beta$ line equivalentwidths, an expected signature of Be-disk interaction with the pulsar.Furthermore, fitting folded Swift-XRT light curve data with an intra-binaryshock model constrained the orbital parameters, suggesting two orbital phases(at $\phi_D = 0.13$ and 0.37) where the pulsar crosses the Be-disk, as well asphases for the periastron ($\phi_0 = 0.30$) and inferior conjunction($\phi_{\text{IFC}} = 0.75$). The broad-band X-ray spectra with Swift-XRT andNuSTAR allowed us to measure a higher neutral hydrogen column density at one ofthe predicted disk-passing phases.

Multi-Wavelength Observation Campaign of the TeV Gamma-Ray Binary HESS J0632+057 with NuSTAR, VERITAS, MDM, and Swift