Table 1: Projected sizes and speeds of the XZ Tauri outer bowshock (and an average speed of the jet knot) as it evolves. Distances are quoted for the latter date of the observation interval. Errors are at the three sigma level.
Observation Distance Bubble Longitudinal Transverse
date/interval from source width speed speed
  (AU) (AU) (km s$^{\rm -1}$) (km s$^{\rm -1}$)
1995 Jan. 5 $598 \pm 16$ $336 \pm 25$ - -
1995 Jan. 5 to 1998 Mar. 25 $697 \pm 10$ $405 \pm 14$ $146 \pm 28$ $101 \pm 42$
1998 Mar. 25 to 1999 Feb. 3 $721 \pm 9$ $423 \pm 5$ $130 \pm 73$ $105 \pm 83$
1999 Feb. 3 to 2000 Feb. 6 $746 \pm 11$ - $119 \pm 65$ -
2000 Feb. 6 to 2001 Feb. 10 $771 \pm 10$ - $117 \pm 69$ -
1998 Mar. 25 to 2001 Feb. 10 - - $130 \pm 84$ (jet) -


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