We analyzed 64 radio observations at the frequency of 8.4 GHz of the Wolf-Rayet star WR 112 , taken from the Very Large Array archive .
These observations cover a time baseline of 13 years , from June 2000 to July 2013 .
The radio structure of WR 112 is consistent with it being a point source in all the epochs and with its flux density varying from 0.6 mJy to 2.1 mJy .
We tried to search for periodicities in these variations but our results were not conclusive .
We also looked for extended emission from the infrared nebula that surrounds WR 112 , settimg upper limits of 50 \mu Jy .
Finally , we used the highest angular resolution images to measure the proper motions of WR 112 , obtaining \mu _ { \alpha } \cos \delta = -2.6 \pm 1.1 \mbox { ~ { } mas~ { } yr$ { } ^ { -1 } $ } , and \mu _ { \delta } = -5.4 \pm 1.4 \mbox { ~ { } mas~ { } yr$ { } ^ { -1 } $ } .
These proper motions are smaller than those previously reported , but still suggest significant peculiar motions for WR 112 .