Outer Rotation Curve of the Galaxy with VERA I: Trigonometric parallax of IRAS 05168+3634

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We report measurement of trigonometric parallax of IRAS 05168+3634 with VERA.

• The parallax is 0.532 +/- 0.053 mas, corresponding to a distance of 1.88+0.21/-0.17 kpc.
• This result is significantly smaller than the previous distance estimate of 6 kpc based on kinematic distance.
• This drastic change in the source distance revises not only physical parameters of IRAS 05168+3634, but also its location of the source, placing it in the Perseus arm rather than the Outer arm.