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[vsnet-obs 19883] New Takamizawa variable (TmzV301)

New Takamizawa variable (TmzV301)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV301).

TmzV301
= GSC1912.720 074246.39 +230945.6 (2000.0) 11.19 1
= GSC1912.720 074246.40 +230946.0 (2000.0) 11.44 1
= USNO1125.05376987 074246.389 +230945.84 (2000.0) 11.0 15.1
= IRAS07397+2316 073946.6 +231655 (1950.0)
    F12=5.25  F25=2.09  F60=0.30  F100=1.00L
    VAR=39 LRS=-1
    II: variable star with 'young' O-rich circumstellar shell
= 074246.1 +230946 (2000.0) IRAS07397+2316 5.313 2.157 0.315 1.000L 39%
= 074246.1 +230946 (2000.0) SSC07397+2316 5.313 2.157 0.315 1.000L
= 074246.2 +230948 (2000.0) LMS85 M7 >13.5
= 074247.4 +230943 (2000.0) FSC07397+2316 5.333 2.170 0.338 0.664L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.0-12.6p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV301        940306.463  120p  Tmz.VSOLJ
TmzV301        950220.493  121p  Tmz.VSOLJ
TmzV301        951025.763  123p  Tmz.VSOLJ
TmzV301        951222.656  121p  Tmz.VSOLJ
TmzV301        961206.683  125p  Tmz.VSOLJ
TmzV301        970830.787  120p  Tmz.VSOLJ
TmzV301        970929.776  126p  Tmz.VSOLJ
TmzV301        971103.778  124p  Tmz.VSOLJ
TmzV301        980217.530  120p  Tmz.VSOLJ
TmzV301        980919.760  125p  Tmz.VSOLJ
TmzV301        981115.769  124p  Tmz.VSOLJ
TmzV301        981212.653  122p  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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