[4] A faint glow around the center-most stars can be observed in the visible light spectrum, especially with the aid of a telescope.

It was the first star detected using infrared methods and is deeply embedded within the Orion star-forming nebula, where it is invisible at optical wavelengths because the light is completely scattered or absorbed due to the high density of dusty material.

Near-infrared polarized light observations showed that the star BN is still surrounded by a circumstellar disk.

In the classical three-body scenario, the dynamical interaction either formed a compact binary or the merger of two stars.

Some of these CO streamers nearly reach the shocked gas and dust observed in molecular hydrogen and iron [Fe II].