  In this study, we carried out photometric, spectroscopic, and for the first
time, polarimetric observations of the Amor-type near-Earth asteroid (2059)
Baboquivari. Our findings represent the first reliable determination of
Baboquivari's physical properties. We used data from a 1m-class telescope
(T100) along with ALCDEF data for photometric analyses and a 1.5-m-class
telescope (RTT150) for polarimetric, spectroscopic, and additional photometric
observations. We obtained the synodic rotation period of Baboquivari as 129.93
+/- 2.31 hours and the standard phase function parameters H and G as 16.05 +/-
0.05, 0.22 +/- 0.02, respectively. Our colour index (V-R) measurement of 0.45
+/- 0.02 is consistent with spectroscopic observations, indicating an S (or
sub-S) spectral type. Using the polarimetric and spectroscopic data, we found
that the geometric albedo is 0.15 +/- 0.03, and the spectral type is Sq. Based
on the estimated albedo and absolute magnitude, Baboquivari has an effective
diameter of 2.12 +/- 0.21 km. Due to the scattered data in the light curve, its
slow rotation and location among the NEAs suggest that Baboquivari may be a
non-principal axis (NPA) rotator.
