[vsnet-obs 20320] New Haseda variable (HadV20)

[Taichi Kato <tkato>]

New Haseda variable (HadV20)

   Katsumi Haseda (Aichi, Japan) reports the discovery of a new variable
star (HadV20).

HadV20
= GSC7927.1130 184430.77 -434108.2 (2000.0) 12.98 0
= USNO0450.35672563 184430.712 -434109.01 (2000.0) 99.9 12.6
= IRAS18409-4344 184054.3 -434415 (1950.0)
    F12=1.10  F25=0.40  F60=0.40L F100=1.20L
    VAR=77 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
= 184430.1 -434107 (2000.0) FSC18408-4344 1.117 0.375 0.175L 0.843L
= 184430.7 -434109 (2000.0) IRAS18409-4344 1.139 0.404 0.400L 1.207L 77%
= 184430.7 -434109 (2000.0) SSC18409-4344 1.139 0.404 0.400L 1.207L

   The identity with the following NSV still needs to be investigated.

184448.3 -433835 (2000.0) NSV11261 ? 12.8 (13.1 P M5

  HadV20    M  range 11.0-(14.3p

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
HadV20         960522.714  <134p  Had.VSOLJ
HadV20         970629.639  135p  Had.VSOLJ
HadV20         980425.752  <136p  Had.VSOLJ
HadV20         980429.750  <136p  Had.VSOLJ
HadV20         980503.758  <143p  Had.VSOLJ
HadV20         980629.650  136p  Had.VSOLJ
HadV20         990425.790  110p  Had.VSOLJ

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

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