[vsnet-alert 9239] Z UMi very deep fading

[Taichi Kato]

   Robert J. Modic has reported that the R CrB-type star Z UMi
has reached a very faint minimum.  The reported magnitude is
the faintest ever reported to VSNET.

  YYYYMMDD(UT)   mag  observer
  20070123.796   117  (Georg Comello)
  20070123.817   115  (Gary Poyner)
  20070123.903   115  (Erwin van Ballegoij)
  20070123.913   116  (Eddy Muyllaert)
  20070124.822   116  (Gary Poyner)
  20070127.031   117  (Eddy Muyllaert)
  20070127.844   118  (Georg Comello)
  20070127.879   116  (Eddy Muyllaert)
  20070131.240   124  (Eddy Muyllaert)
  20070201.806   120  (Eddy Muyllaert)
  20070202.776   122  (Gary Poyner)
  20070202.821   122  (Eddy Muyllaert)
  20070203.780   124  (Gary Poyner)
  20070203.846   120  (Eddy Muyllaert)
  20070205.771   122  (Georg Comello)
  20070205.978   124  (Erwin van Ballegoij)
  20070206.803   124  (Gary Poyner)
  20070207.923   126  (Eddy Muyllaert)
  20070211.809   127  (Eddy Muyllaert)
  20070211.883   129  (Erwin van Ballegoij)
  20070214.776   128  (Gary Poyner)
  20070214.892   128  (Eddy Muyllaert)
  20070215.849   126  (Georg Comello)
  20070216.844   128  (Wolfgang Kriebel)
  20070217.865   131  (Erwin van Ballegoij)
  20070217.905   131  (Eddy Muyllaert)
  20070218.967   132  (Jose Ripero)
  20070221.806  <130  (Gobet Franck)
  20070221.858   136  (Eddy Muyllaert)
  20070221.935   136  (Erwin van Ballegoij)
  20070222.823   137  (Gobet Franck)
  20070301.050   143  (Gary Poyner)
  20070302.008   147  (Gary Poyner)
  20070303.878   147  (Gary Poyner)
  20070303.967  <143  (Eddy Muyllaert)
  20070307.940  <143  (Eddy Muyllaert)
  20070308.808  <137  (Gobet Franck)
  20070309.927  <143  (Eddy Muyllaert)
  20070309.951   155  (Gary Poyner)
  20070309.961   156: (Guus Gilein)
  20070310.885   152  (Gary Poyner)
  20070310.890  <143  (Eddy Muyllaert)
  20070310.910  <137  (Gobet Franck)
  20070311.308  171:V (Robert J. Modic)
  20070311.931  <137  (Jose Ripero)