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[vsnet-obs 18239] New Takamizawa variable (TmzV100)

New Takamizawa variable (TmzV100)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV100).

TmzV100
= GSC7111.1313 071319.66 -350033.5 (2000.0) 13.66 0
= USNO0525.03591995 071319.651 -350033.18 (2000.0) 10.4 12.8
= IRAS07115-3455 071130.9 -345520 (1950.0)
    F12=2.51  F25=1.44  F60=0.40L F100=8.31L
    VAR=13 LRS=-1
 possibly IIIa: variable star with more evolved O-rich c.s. shell
 or VII: variable star with more evolved C-rich circumstellar shell
= 071319.6 -350033 (2000.0) FSC07115-3455 2.391 1.389 0.360L 2.864L
= 071320.1 -350031 (2000.0) IRAS07115-3455 2.399 1.455 0.400L 8.573L 13%
= 071320.1 -350031 (2000.0) SSC07115-3455 2.399 1.455 0.400L 8.573L

   Takamizawa's comment:

  The star may be a semiregular variable (SR) with a range of 13.3-14.2p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV100        941203.705  133p  Tmz.VSOLJ
TmzV100        961021.760  134p  Tmz.VSOLJ
TmzV100        971105.786  137p  Tmz.VSOLJ
TmzV100        971203.697  133p  Tmz.VSOLJ
TmzV100        971231.606  141p  Tmz.VSOLJ
TmzV100        981126.731  142p  Tmz.VSOLJ

Observer: 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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