[vsnet-obs 20462] New Haseda variable (HadV22)

[Taichi Kato <tkato>]

New Haseda variable (HadV22)

   Katsumi Haseda (Aichi, Japan) reports the discovery of a new variable
star (HadV22).

HadV22
= USNO0525.19968585 164601.265 -363307.59 (2000.0) 11.8 14.5
= IRAS16426-3627 164240.3 -362744 (1950.0)
    F12=1.58  F25=0.58  F60=0.91L F100=33.10L
    VAR= 0 LRS=-1
 possibly II: variable star with 'young' O-rich circumstellar shell
 or VII: variable star with more evolved C-rich circumstellar shell
 or VIa: non-variable star with relatively cold dust at large
      distance, may be carbon-rich
= 164600.7 -363308 (2000.0) IRAS16426-3627 1.516 0.554 0.919L 31.670L 0%
= 164600.7 -363308 (2000.0) SSC16426-3627 1.516 0.554 0.919L 31.670L

  HadV22  M:  range 12.5-(14.3p

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
HadV22         903134.731  <143p  Had.VSOLJ
HadV22         970309.804  <143p  Had.VSOLJ
HadV22         980301.831  126p  Had.VSOLJ
HadV22         980306.822  125p  Had.VSOLJ
HadV22         980402.770  <134p  Had.VSOLJ
HadV22         980429.707  <132p  Had.VSOLJ
HadV22         980503.735  <136p  Had.VSOLJ
HadV22         980522.626  <132p  Had.VSOLJ

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

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