[amsat-bb] aprs via ariss

Hi all, I tried gating packets like this on 437.55 this afternoon. Is the format right?

N3YKF-3>APTT4,ARISS,IS:/131918z2901.30N/08210.41W>288/000/n3ykf mobile!/A=000121 !wgO! Thanks, Norm n3ykf