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[vsnet-j 786] V2756 Sgr fading

V2756 Sgr fading

　共生星の V2756 Sgr が減光しているとのことです。

The ZAND type star V2756 Sgr appears to have declined as indicated by the
following single morning observation.  Also listed are observations from
the end of last year (2000 October) prior to conjunction with the sun. 
This star is plotted on chart 614 of the VSS RASNZ which includes a V
sequence.  V2756 Sgr typically shows little variation around visual
magnitude 13.0 or 13.1 and this is appears to be the first major fade since
I commenced regular observation in September 1988 (unless it always fades 
when in the morning sky as I lack regular morning observations!).

　これまでのデータです。

  YYYYMMDD(UT)   mag  observer
  19970801.183   129  (R. J. Modic)
  19980428.738   129  (T. Watanabe)
  19990831.507   128  (T. Watanabe)
  20001002.424   131  (P. Williams)
  20001003.406   131  (P. Williams)
  20001004.417   131  (P. Williams)
  20001007.391   131  (P. Williams)
  20001010.403   130  (P. Williams)
  20001025.442   130  (P. Williams)
  20001029.419   130  (P. Williams)
  20010217.749  <140  (P. Williams)

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