Left: Shown here are galaxies within a projected angular separation of ∼0.°5 (∼1 Mpc at a distance of 105.9 Mpc), and a recession velocity within 500 km s⁻¹, of AGC 229101's position and velocity. Some of these objects may be possible tidal companions to AGC 229101. The size of each symbol scales with the z-band magnitude of each source, and colors indicate measured recessional velocities as shown in the color bar. Sources with detected H I are marked with diamonds and sources without an H I detection are marked with circles. AGC 229101 is plotted with its H I contours at the center of the figure. The region depicted in Figure 1 is indicated with a dashed–dotted line, and the regions depicted in the right-hand panels are depicted with dashed lines. Right Top: pODI image of IC 3171 and surrounding galaxies to the southwest of AGC 229101. The location of AGC 229101 is indicated by its H I contours in the upper left corner of the figure. Right Bottom: pODI image of IC 3185 with WSRT contours overlaid in light blue, and SDSS image of IC 3203 with WSRT contours overlaid in blue. Note that IC 3203 is outside the FWHM of the WSRT primary beam, but is still bright enough to be detected. WSRT contours for both images range from 1 to 32 × 10¹⁹atoms cm⁻² in powers of 2, and have been primary beam corrected.