[vsnet-newvar 1179] Confirmation of variability of NSV15510 (Takamizawa)

[Taichi Kato <tkato>]

Confirmation of variability of NSV15510 (Takamizawa)

   Kesao Takamizawa (Nagano, Japan) reports the detection of a variable star,
which has been identifed with NSV15510.  The variability is confirmed.

NSV15510
= GSC3687.1863 022750.48 +534639.3 (2000.0) 12.93 1
= USNO1425.03524116 022750.484 +534639.34 (2000.0) 11.4 14.4
= IRAS02243+5333 022422.3 +533308 (1950.0)
    F12=2.29  F25=1.00  F60=0.40L F100=1.20L
    VAR= 5 LRS=-1
 possibly II: variable star with 'young' O-rich circumstellar shell
 or VII: variable star with more evolved C-rich circumstellar shell
= 022750.0 +534633 (2000.0) IRAS02243+5333 2.237 0.968 0.400L 1.209L 5%
= 022750.0 +534633 (2000.0) SSC02243+5333 2.237 0.968 0.400L 1.209L
= 022750.4 +534639 (2000.0) NSV15510 LB: 12.5 12.8 V - - - -

  The star may be a semiregular variable with a range of 12.4-13.1p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
NSV15510       19950127.424  126p  Tmz.VSOLJ
NSV15510       19960922.666  127p  Tmz.VSOLJ
NSV15510       19970613.728  127p  Tmz.VSOLJ
NSV15510       19980116.413  131p  Tmz.VSOLJ
NSV15510       19980629.701  129p  Tmz.VSOLJ
NSV15510       19991128.448  128p  Tmz.VSOLJ
NSV15510       20000902.678  124p  Tmz.VSOLJ
NSV15510       20011023.605  127p  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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