The Xastir source code has dependencies that link to it.. specifically
GraphicsMagick / ImageMagick
$ ldd /usr/bin/xastir | grep jasper
libjasper.so.1 => /usr/lib64/libjasper.so.1 (0x0000003fbd800000
$ rpm -qRi GraphicsMagick | grep jasper
libjasper.so.1()(64bit)
--David
KI6ZHD