NSV 4838 superoutburst YYYYMMDD(UT) mag observer 20160425.601 <156c (Mitsutaka Hiraga) 20160427.921 <156 (Gary Poyner) 20160502.916 155C (Jeremy Shears) 20160502.928 152 (Gary Poyner) 20160503.953 149 (Gary Poyner) 20160504.508 147c (Mitsutaka Hiraga) 20160504.919 <148 (Gary Poyner) 20160507.492 146c (Mitsutaka Hiraga)