[vsnet-obs 39950] Confirmation of variability of KnkV02 by Haseda

[Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>]

Confirmation of variability of KnkV02 by Haseda

   Katsumi Haseda (Aichi, Japan) reports the detection of a variable star,
which has been identifed with KnkV02 (variable star reported by K. Kanatsu).
The variability is confirmed.

KnkV02
= GSC6801.490 161221.22 -274440.5 (2000.0) 12.19 0
= GSC6801.490 161221.23 -274441.0 (2000.0) 12.25 0
= USNO0600.11342426 161221.230 -274441.05 (2000.0) 10.8 11.2
= 2MASS 161221.240 -274440.92 (2000.0)  0.000  0.000  0.000
= IRAS16092-2736 160916.1 -273658 (1950.0)
    F12=2.51  F25=0.91  F60=1.74L F100=20.89L
    VAR=33 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
= 161221.2 -274440 (2000.0) KnkV02 10.5 <12.4p M: 
= 161220.9 -274437 (2000.0) IRAS16092-2736 2.588 0.880 1.714L 20.310L 33%
= 161220.9 -274437 (2000.0) SSC16092-2736 2.588 0.880 1.714L 20.310L
= 161222.5 -274444 (2000.0) FSC16092-2737 2.562 0.828 1.912L 8.736L

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
KnkV02         19960326.776  117p  Had.VSOLJ
KnkV02         19990221.799  120p  Had.VSOLJ
KnkV02         19990222.815  121p  Had.VSOLJ
KnkV02         19990609.595  113p  Had.VSOLJ
KnkV02         20000211.819  117p  Had.VSOLJ
KnkV02         20010202.845  118p  Had.VSOLJ
KnkV02         20010304.797  111p  Had.VSOLJ
KnkV02         20010626.585  118p  Had.VSOLJ
KnkV02         20010713.556  111p  Had.VSOLJ
KnkV02         20020222.801  119p  Had.VSOLJ
KnkV02         20020511.669  111p  Had.VSOLJ
KnkV02         20020520.613  109p  Had.VSOLJ

Observer's code:
  Had: K. Haseda (Aichi, Japan)
       Instruments: 10cm F4.0 twin patrol camera +T-Max400(120)

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