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[vsnet-obs 19636] New Takamizawa variable (TmzV259)

New Takamizawa variable (TmzV259)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV259).

TmzV259
= GSC2420.765 061710.77 +303754.9 (2000.0) 12.03 1
= USNO1200.04624507 061710.792 +303754.95 (2000.0) 11.8 19.7
= IRAS06139+3039 061357.5 +303904 (1950.0)
    F12=4.78  F25=1.44  F60=0.44L F100=7.58L
    VAR=36 LRS=-1
 possibly I: oxygen-rich non-variable star without circumstellar shell
 or VII: variable star with more evolved C-rich circumstellar shell
= 061707.1 +303852 (2000.0) CS1213 - - 9.1 -
= 061710.6 +303755 (2000.0) IRAS06139+3039 4.659 1.445 0.430L 7.334L 36%
= 061710.6 +303755 (2000.0) SSC06139+3039 4.659 1.445 0.430L 7.334L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.0-13.3p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV259        940302.579  129p  Tmz.VSOLJ
TmzV259        940331.506  129p  Tmz.VSOLJ
TmzV259        940429.508  130p  Tmz.VSOLJ
TmzV259        940910.778  130p  Tmz.VSOLJ
TmzV259        941127.646  130p  Tmz.VSOLJ
TmzV259        950203.484  125p  Tmz.VSOLJ
TmzV259        950219.464  120p  Tmz.VSOLJ
TmzV259        951021.772  133p  Tmz.VSOLJ
TmzV259        951219.574  133p  Tmz.VSOLJ
TmzV259        961016.736  132p  Tmz.VSOLJ
TmzV259        961206.576  132p  Tmz.VSOLJ
TmzV259        970127.436  130p  Tmz.VSOLJ
TmzV259        970811.769  120p  Tmz.VSOLJ
TmzV259        970901.762  122p  Tmz.VSOLJ
TmzV259        971103.734  123p  Tmz.VSOLJ
TmzV259        971105.717  125p  Tmz.VSOLJ
TmzV259        971221.548  129p  Tmz.VSOLJ
TmzV259        980119.470  129p  Tmz.VSOLJ
TmzV259        980318.494  133p  Tmz.VSOLJ
TmzV259        980820.757  122p  Tmz.VSOLJ
TmzV259        980916.769  124p  Tmz.VSOLJ
TmzV259        981218.638  122p  Tmz.VSOLJ
TmzV259        990204.453  122p  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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