[vsnet-obs 19790] New Takamizawa variable (TmzV287)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV287)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV287).

TmzV287
= GSC772.1474 072451.03 +120816.5 (2000.0) 11.57 6
= USNO0975.05161650 072451.028 +120816.35 (2000.0) 11.3 15.0
= IRAS07220+1214 072204.0 +121414 (1950.0)
    F12=1.00  F25=0.44  F60=0.40L F100=1.00L
    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
= 072451.0 +120818 (2000.0) FSC07220+1214 0.909 0.389 0.144L 0.819L
= 072451.1 +120817 (2000.0) IRAS07220+1214 0.971 0.415 0.400L 1.000L 0%
= 072451.1 +120817 (2000.0) SSC07220+1214 0.971 0.415 0.400L 1.000L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.8-12.9p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV287        940306.451  123p  Tmz.VSOLJ
TmzV287        950220.486  118p  Tmz.VSOLJ
TmzV287        951025.756  120p  Tmz.VSOLJ
TmzV287        951222.667  129p  Tmz.VSOLJ
TmzV287        961015.812  121p  Tmz.VSOLJ
TmzV287        961206.691  121p  Tmz.VSOLJ
TmzV287        970830.794  119p  Tmz.VSOLJ
TmzV287        970929.784  123p  Tmz.VSOLJ
TmzV287        971103.787  121p  Tmz.VSOLJ
TmzV287        971204.729  121p  Tmz.VSOLJ
TmzV287        971224.658  123p  Tmz.VSOLJ
TmzV287        980121.572  120p  Tmz.VSOLJ
TmzV287        980217.522  119p  Tmz.VSOLJ
TmzV287        980919.769  121p  Tmz.VSOLJ
TmzV287        981115.761  122p  Tmz.VSOLJ
TmzV287        981212.644  119p  Tmz.VSOLJ

Observer's code:
  Tmz: K.Takamizawa (Saku-machi,Nagano,Japan)
       Inst.: 10cmR F4 twin patrol cameras  T-Max400 120
       Comparison stars mag.:GSC

Relayed from Kesao Takamizawa <GHA07243@nifty.ne.jp>

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