[vsnet-newvar 861] Re: New Haseda variable (HadV85)

[Taichi Kato <tkato>]

Re: New Haseda variable (HadV85)

>    Katsumi Haseda (Aichi, Japan) reports the discovery of a new variable
> star (HadV85).  The star is close to the position of V4016 Sgr, for which
> the identification with GSC7395.254 (181643.18 -300013.4) has been proposed.
> However, the distortion in the chart of the discovery reports secure
> identification difficult.  V4016 Sgr is sometimes identified with an
> IRAS source IRAS18134-3002, which has an apparent optical counterpart
> GSC7392.246 (181638.42 -300108.3).  This star is very bright in 2MASS,
> which makes IRAS identification likely.  Haseda's observations confirms
> the variability of GSC7395.254, but not for GSC7392.246.  There are at
> least two variabile stars HadV85 and GSC7392.246.  The secure identification
> of V4016 Sgr apparently await further study.

   The result of Haseda's photometry of GSC7395.254 (which was tentatively
identified with V4016 Sgr):

   We hope these observations could help discriminating the possibilities.

object         YYYYMMDD(UT)   mag  code
GSC7392.254    19960522.707  127p  Had.VSOLJ
GSC7392.254    19960525.641  <129p  Had.VSOLJ
GSC7392.254    19970317.817  <131p  Had.VSOLJ
GSC7392.254    19970517.729  <129p  Had.VSOLJ
GSC7392.254    19970606.722  125p  Had.VSOLJ
GSC7392.254    19970629.635  130p  Had.VSOLJ
GSC7392.254    19980228.829  129p  Had.VSOLJ
GSC7392.254    19980307.812  126p  Had.VSOLJ
GSC7392.254    19980402.778  131p  Had.VSOLJ
GSC7392.254    19980425.728  128p  Had.VSOLJ
GSC7392.254    19980429.734  <131p  Had.VSOLJ
GSC7392.254    19980503.742  <131p  Had.VSOLJ
GSC7392.254    19980522.705  <131p  Had.VSOLJ
GSC7392.254    19980615.550  <131p  Had.VSOLJ
GSC7392.254    19980629.635  128p  Had.VSOLJ
GSC7392.254    19980814.533  126p  Had.VSOLJ
GSC7392.254    19990313.803  126p  Had.VSOLJ
GSC7392.254    20000212.851  <128p  Had.VSOLJ
GSC7392.254    20000313.824  128p  Had.VSOLJ
GSC7392.254    20000401.806  127p  Had.VSOLJ
GSC7392.254    20000412.764  123p  Had.VSOLJ
GSC7392.254    20000508.749  126p  Had.VSOLJ
GSC7392.254    20000601.608  130p  Had.VSOLJ
GSC7392.254    20000702.632  129p  Had.VSOLJ
GSC7392.254    20000708.622  127p  Had.VSOLJ
GSC7392.254    20000716.588  <127p  Had.VSOLJ
GSC7392.254    20000822.523  <129p  Had.VSOLJ
GSC7392.254    20010226.841  128p  Had.VSOLJ
GSC7392.254    20010326.805  126p  Had.VSOLJ
GSC7392.254    20010422.749  127p  Had.VSOLJ

Observer's code:
  Had: K. Haseda (Aichi, Japan)
  Instruments: 10cm F4.0 twin patrol camera + T-Max400(120)

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