Still no. I'll give you a second angle.
From this image, it's clear that the screenshot was not taken in a binary system, at least not in a system with two normal stars. The planet is completely dark on its unlit half, which I wouldn't expect if there's another nearby star. Unless it's hiding behind the planet. Or is off to the bottom right. I meant
to say that it had to be a circumbinary system if it was binary.
Anyways, with all the possible arrangement of stars, and barring extreme (I mean, more extreme than usual) proportions, the object has to be emitting light rather than reflecting it. So, what's tiny and still emits light? Has Hornblower
ruled out the possibility of a white dwarf? Did he drop a flashlight out of his spaceship? Did an advanced species put a mirror in front of him to confuse him?