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[vsnet-obs 19206] New Takamizawa variable (TmzV219)

New Takamizawa variable (TmzV219)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV219).

TmzV219
= GSC2375.215 042011.44 +331725.9 (2000.0) 12.24 1
= GSC2375.215 042011.45 +331725.5 (2000.0) 12.41 1
= USNO1200.02188444 042009.848 +331735.09 (2000.0) 14.5 16.6
= USNO1200.02188811 042011.447 +331726.08 (2000.0) 11.0 14.2
= IRAS04169+3310 041657.8 +331017 (1950.0)
    F12=0.69  F25=0.48  F60=0.40L F100=1.44L
    VAR=15 LRS=-1
 possibly IIIa: variable star with more evolved O-rich c.s. shell
 or VIb: variable star with relatively hot dust close to
      the star and relatively cold dust at large distance
      may be O-rich
 or VII: variable star with more evolved C-rich circumstellar shell
= 042010.3 +331724 (2000.0) FSC04169+3310 0.733 0.415 0.201L 1.674L
= 042011.0 +331726 (2000.0) IRAS04169+3310 0.705 0.473 0.400L 1.389L 15%
= 042011.0 +331726 (2000.0) SSC04169+3310 0.705 0.473 0.400L 1.389L

  Takamizawa's comment:

  The star may be a semiregular variable  with  a renge of 12.0-12.8p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV219        940301.503  120p  Tmz.VSOLJ
TmzV219        940810.718  126p  Tmz.VSOLJ
TmzV219        940910.716  122p  Tmz.VSOLJ
TmzV219        941104.734  125p  Tmz.VSOLJ
TmzV219        941223.469  124p  Tmz.VSOLJ
TmzV219        950320.479  124p  Tmz.VSOLJ
TmzV219        950823.727  125p  Tmz.VSOLJ
TmzV219        951127.562  128p  Tmz.VSOLJ
TmzV219        960110.488  121p  Tmz.VSOLJ
TmzV219        960815.715  127p  Tmz.VSOLJ
TmzV219        961202.463  126p  Tmz.VSOLJ
TmzV219        961229.411  124p  Tmz.VSOLJ
TmzV219        970714.735  126p  Tmz.VSOLJ
TmzV219        970802.723  123p  Tmz.VSOLJ
TmzV219        971010.705  125p  Tmz.VSOLJ
TmzV219        971123.534  126p  Tmz.VSOLJ
TmzV219        981112.555  125p  Tmz.VSOLJ
TmzV219        990109.506  128p  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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