  We report on Gemini/GNIRS observations of the binary T Tauri system V582 Mon
(KH 15D) at three orbital phases. These spectra allow us to untangle five
components of the system: the photosphere and magnetosphere of star B, the jet,
scattering properties of the ring material, and excess near-IR radiation
previously attributed to a possible self-luminous planet. We confirm an early-K
subgiant classification for star B and show that the magnetospheric He I
emission line is variable, possibly indicating increased mass accretion at
certain times. As expected, the H$_2$ emission features associated with the
inner part of the jet show no variation with orbital phase. We show that the
reflectance spectrum for the scattered light has a distinctive blue slope and
spectral features consistent with scattering and absorption by a mixture of
water and methane ice grains in the 1-50 $\mu$m size range. This suggests that
the methane frost line is closer than $\sim$5 AU in this system, requiring that
the grains be shielded from direct radiation. After correcting for features
from the scattered light, jet, magnetosphere, and photosphere, we confirm the
presence of leftover near-IR light from an additional source, detectable near
minimum brightness. A spectral emission feature matching the model spectrum of
a 10 M$_{J}$, 1 Myr old planet is found in the excess flux, but other expected
features from this model are not seen. Our observations, therefore, tentatively
support the picture that a luminous planet is present within the system,
although they cannot yet be considered definitive.
