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[vsnet-newvar 1110] Confirmation of variability of NSV25429 (Takamizawa)

Confirmation of variability of NSV25429 (Takamizawa)

   Kesao Takamizawa (Nagano, Japan) reports the detection of a variable star,
which has been identifed with NSV25429.  The variability is confirmed.

NSV25429
= GSC6923.1250 210242.87 -234654.3 (2000.0) 11.95 0
= USNO0600.23614436 210242.908 -234654.62 (2000.0)  9.7 12.5
= 2MASS 210242.840 -234654.84 (2000.0)  0.000  0.000  0.000
= IRAS20598-2358 205948.2 -235849 (1950.0)
    F12=4.36  F25=2.29  F60=0.40L F100=1.00L
    VAR=19 LRS=-1
 possibly IIIa: variable star with more evolved O-rich c.s. shell
= 210242.6 -234656 (2000.0) IRAS20598-2358 4.289 2.290 0.400L 1.000L 19%
= 210242.6 -234656 (2000.0) SSC20598-2358 4.289 2.290 0.400L 1.000L
= 210242.9 -234654 (2000.0) FSC20598-2358 4.293 2.284 0.314 0.576L
= 210242.7 -234654 (2000.0) 1099 1.86 TYC2-6923.1250.1 (11.18 0.13) (13.37 0.56)
= 210242.9 -234654 (2000.0) NSV25429 ? 11.0 11.3 P - - - -

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.6-12.2p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
NSV25429       19940512.742  121p  Tmz.VSOLJ
NSV25429       19940703.665  121p  Tmz.VSOLJ
NSV25429       19940803.588  119p  Tmz.VSOLJ
NSV25429       19940810.651  122p  Tmz.VSOLJ
NSV25429       19940930.540  121p  Tmz.VSOLJ
NSV25429       19941127.394  121p  Tmz.VSOLJ
NSV25429       19950723.663  118p  Tmz.VSOLJ
NSV25429       19951020.433  117p  Tmz.VSOLJ
NSV25429       19960815.551  116p  Tmz.VSOLJ
NSV25429       19970706.686  120p  Tmz.VSOLJ
NSV25429       19971025.518  121p  Tmz.VSOLJ
NSV25429       19990708.667  120p  Tmz.VSOLJ
NSV25429       20011013.444  118p  Tmz.VSOLJ

Observer's code:
  Tmz: K.Takamizawa (Saku-machi,Nagano,Japan)
       SASS (Saku All Sky Survey)
       Inst.: 10cmR F4 twin patrol cameras and 25cm F2.8
       Baker-Schmidt camera T-Max400 120
       Comparison stars mag.:GSC

Relayed from Kesao Takamizawa <k-takamizawa@nifty.ne.jp>

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