Trigonometric Parallaxes of Massive Star Forming Regions: VIII.   G12.89+0.49, G15.03-0.68 (M17) and G27.36-0.16
  We report trigonometric parallaxes for three massive star forming regions, corresponding to distances of $2.34^{+0.13}_{-0.11}$ kpc for G12.89+0.49 (also known as IRAS 18089-1732),$1.98^{+0.14}_{-0.12}$ kpc for G15.03-0.68 (in the M17 region), and $8.0^{+4.0}_{-2.0}$ kpc for G27.36-0.16. Both G12.89+0.49 and G15.03-0.68 are located in the Carina-Sagittarius spiral arm. 
Y. Xu, L. Moscadelli, M. J. Reid, K. M. Menten, B. Zhang, X. W. Zheng,   and A. Brunthaler
astro-ph.GA astro-ph.SR