  We present a uniform assessment of existing near-infrared Spitzer Space
Telescope observations of planet-bearing stars. Using a simple four-parameter
blackbody thermal model, we analyze stars for which photometry in at least one
of Spitzer's IRAC bands has been obtained over either the entirety or a
significant fraction of the planetary orbit. Systems in this category comprise
ten well-studied systems with Hot Jupiters on circular or near-circular orbits
(HAT-P-7, HD 149026, HD 189733, HD 209458, WASP-12, WASP-14, WASP-18, WASP-19,
WASP-33, and WASP-43), as well as three stars harboring planets on
significantly eccentric orbits (GJ 436, HAT-P-2, and HD 80606). We find that
our simple model, in almost all cases, accurately reproduces the minimum and
maximum planetary emission, as well as the phase offsets of these extrema with
respect to transits/secondary eclipses. For one notable exception, WASP-12 b,
adding an additional parameter to account for its tidal distortion is not
sufficient to reproduce its photometric features. Full-orbit photometry is
available in multiple wavelengths for 10 planets. We find that the returned
parameter values for independent fits to each band are largely in agreement.
However, disagreements in night-side temperature suggest distinct atmospheric
layers, each with their own characteristic minimum temperature. In addition, a
diversity in albedos suggests variation in opacity of the photospheres. While
previous works have pointed out trends in photometric features based on system
properties, we cannot conclusively identify analogous trends for physical model
parameters. To make the connection between full-phase data and physical models
more robust, a higher signal-to-noise must come from both increased resolution
and a careful treatment of instrumental systematics.
