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We present an analysis of archival Gemini g', r', K and Keck H, K_s imagingof this nearby short period binary (P_B=95.8min) 2.87ms pulsar. The heatedcompanion is clearly detected. Direct pulsar heating provides an acceptablemodel at the revised >700pc parallax distance. The relatively shallow lightcurve modulation prefers an inclination i<40deg; this high latitude viewprovides a likely explanation for the lack of radio signatures of winddispersion or eclipse. It also explains the low minimum companion mass and,possibly, the faintness of the source in X- and gamma-rays.

PSR J0636+5128: A Heated Companion in a Tight Orbit