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[vsnet-obs 19483] New Takamizawa variable (TmzV253)

New Takamizawa variable (TmzV253)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV253).

TmzV253
= GSC3377.1218 063413.59 +455759.5 (2000.0) 11.27 6
= USNO1350.06850772 063413.606 +455759.32 (2000.0) 10.9 12.5
= IRAS06305+4600 063030.6 +460020 (1950.0)
    F12=0.83  F25=0.36  F60=0.40L F100=1.58L
    VAR=24 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
= 063412.7 +455758 (2000.0) IRAS06305+4600 0.803 0.355 0.400L 1.586L 24%
= 063412.7 +455758 (2000.0) SSC06305+4600 0.803 0.355 0.400L 1.586L
= 063414.4 +455755 (2000.0) FSC06305+4600 0.756 0.333 0.243L 0.958L
= 063418.3 +455733 (2000.0) DO30583

  Takamizawa's comment:

  The star may be a semiregular variable  with  a range of 11.0-11.7p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV253        950203.476  110p  Tmz.VSOLJ
TmzV253        951219.564  116p  Tmz.VSOLJ
TmzV253        970811.762  110p  Tmz.VSOLJ
TmzV253        970901.754  117p  Tmz.VSOLJ
TmzV253        971109.675  117p  Tmz.VSOLJ
TmzV253        980119.463  116p  Tmz.VSOLJ
TmzV253        980318.507  115p  Tmz.VSOLJ
TmzV253        980820.749  112p  Tmz.VSOLJ
TmzV253        981218.631  110p  Tmz.VSOLJ
TmzV253        990204.446  111p  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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