[vsnet-newvar 1286] New Takamizawa variable (TmzV900)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV900)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV900).

TmzV900
= GSC4058.831 022222.61 +665128.6 (2000.0) 12.88 1 N
= GSC4058.831 022222.66 +665128.5 (2000.0) 13.14 1
= USNO1500.02380557 022222.630 +665128.23 (2000.0) 11.8 17.0
= IRAS02183+6637 021819.3 +663745 (1950.0)
     F12=0.63  F25=0.17  F60=0.40L F100=7.58L
     VAR=60 LRS=-1
  possibly I: oxygen-rich non-variable star without circumstellar shell
  or VIa: non-variable star with relatively cold dust at large
       distance, may be carbon-rich
= 022222.3 +665124 (2000.0) IRAS02183+6637 0.632 0.178 0.400L 7.251L 60%
= 022222.3 +665124 (2000.0) SSC02183+6637 0.632 0.178 0.400L 7.251L
= 022222.6 +665128 (2000.0) CS336 - - 10.1 -

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.9-14.0p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV900        19950127.432  131p  Tmz.VSOLJ
TmzV900        19960922.656  135p  Tmz.VSOLJ
TmzV900        19970613.737  137p  Tmz.VSOLJ
TmzV900        19980116.420  140p  Tmz.VSOLJ
TmzV900        19980629.693  137p  Tmz.VSOLJ
TmzV900        19991128.440  132p  Tmz.VSOLJ
TmzV900        20000902.687  129p  Tmz.VSOLJ
TmzV900        20011023.613  130p  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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