Abstract
We report multi-wavelength observations of an unidentified Fermi object in the first-year Fermi catalog. The Fermi source has a candidate X-ray counterpart from Swift and Chandra data. We also identify a possible optical counterpart using the X-ray data. Its X-ray and gamma-ray properties are consistent with known gamma-ray millisecond pulsars. There is a possible X-ray modulation while optical/UV observations indicate that the system is likely in a low-mass X-ray binary system. No known radio source is associated with the proposed counterpart and we suggest that the source is the first "radio-quiet" gamma-ray emitting millisecond pulsar in a low-mass X-ray binary currently in quiescence. This work is supported by the National Science Council of Taiwan.