We report on VLBA astrometry and CXO imaging of PSR J0538+2817 in the supernova remnant S147. We measure a parallax distance of 1.47 +0.42 −0.27 kpc along with a high-precision proper motion, giving a transverse velocity V ⊥ = 400 +114 −73 km s−1. A small extended wind nebula is detected around the pulsar; the symmetry axis of this structure suggests that the spin axis lies 12 ◦ ± 4 ◦ from the velocity vector (2-D), but the emission is too faint for robust model independent statements. The neutron star is hot, consistent with the young ∼ 40kyr kinematic age. The pulsar progenitor is likely a runaway from a nearby cluster, with NGC 1960 (M36) a leading candidate. Subject headings: astrometry — pulsars: individual (PSR J0538+2817) — supernovae: individual (S147) — stars: kinematics 1
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