The name for LUSEX in this week's TLE distribution has been changed to NuSat1-LUSEX. The reason for this change is to avoid name confusion in the future between NuSat1 and NuSat2 satellites. (Thanks to Nico, PA0DLO for this good suggestion.) Note:LUSEX is the name of the transponder experiment on the satellite NuSAT1, NORAD CAT ID 41557 (launched on 5-30-2016).
See LUSEX details in AMSAT News Service Bulletin ANS-157 at http://amsat.org/pipermail/ans/2016/000913.html
NuSat2, NORAD CAT ID 41558 (launched on 5-30-2016) has also been added to this week's TLE distribution. NuSat2 has only a 437.445 Mhz beacon.
Also note that Space-Track has actually not named objects 41557 and 41558 as yet. So ... there is still a chance that further name changes may happen.