V419 Lyr outburst SU UMa-type DN with a long orbital period. YYYYMMDD(UT) mag observer 20170519.655 <159c (Mitsutaka Hiraga) 20170528.653 <159c (Mitsutaka Hiraga) 20170531.644 <159c (Mitsutaka Hiraga) 20170602.597 <157C (Masayuki Moriyama) 20170603.788 150c (Mitsutaka Hiraga)