  HD 141569 is a Herbig Ae/Be star that straddles the boundary between the
transition disks and debris disks. It is a low dust mass disk that reveals
numerous structural elements (e.g. gaps and rings) that may point to young
planets. It also exhibits a reservoir of CO gas observed at both millimeter and
IR wavelengths. Previous observations (Goto et al. 2006) reported a possible
asymmetry in the CO gas emission. Herein the IR ro-vibrational emission lines
are analyzed and modeled both spectroscopically and spectroastrometrically. We
find emission features from both 12CO and 13CO isotopologues heated to a
temperature of approximately 200 K in the radial extent of 13 to 60 au. We do
not see evidenceof the previously reported asymmetry in CO emission, our
results being consistent with a Keplerian, axisymmetric emitting region. This
raises the question of whether the emission profile may be evolving in time,
possibly as a result of an orbiting feature in the inner disk such as a planet.
