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[vsnet-obs 19775] New Takamizawa variable (TmzV278)

New Takamizawa variable (TmzV278)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV278).

TmzV278
= GSC5366.1452 061135.69 -100154.9 (2000.0) 13.76 0
= GSC5366.1452 061135.71 -100154.9 (2000.0) 14.31 0
= USNO0750.01894379 061135.691 -100154.93 (2000.0) 12.0 15.7
= IRAS06092-1001 060913.6 -100108 (1950.0)
    F12=1.90  F25=0.63  F60=0.40L F100=6.31L
    VAR=42 LRS=-1
 possibly I: oxygen-rich non-variable star without 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
= 061135.4 -100153 (2000.0) IRAS06092-1001 1.931 0.637 0.400L 6.509L 42%
= 061135.4 -100153 (2000.0) SSC06092-1001 1.931 0.637 0.400L 6.509L
= 061135.7 -100156 (2000.0) FSC06092-1001 1.739 0.574 0.194L 6.473L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.6-<15.3p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV278        940331.481  137p  Tmz.VSOLJ
TmzV278        941127.608  126p  Tmz.VSOLJ
TmzV278        950203.519  140p  Tmz.VSOLJ
TmzV278        950219.442  150p  Tmz.VSOLJ
TmzV278        951021.750  127p  Tmz.VSOLJ
TmzV278        951219.605  152p  Tmz.VSOLJ
TmzV278        960111.501  153p  Tmz.VSOLJ
TmzV278        961206.602  <153p  Tmz.VSOLJ
TmzV278        971103.759  <153p  Tmz.VSOLJ
TmzV278        971221.572  153p  Tmz.VSOLJ
TmzV278        990206.492  129p  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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