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[vsnet-campaign-nova 150] Possible Nova in Pup: possible variability of field stars

Possible Nova in Pup: possible variability of field stars

   Akira Takao (Kitakyushu-City,Fukuoka-Pref.) reports that the following
two stars in the field of the possible Nova Pup (Kanatsu Object) seem to
show detectable variability on his CCD frames.  The constancy of the
comparison (GSC6543.2917) against the check stars (GSC6543.2220, GSC6543.3212)
have been confirmed.  Please avoid using these stars as comparisons of
the possible nova, and report magnitudes of these stars to confirm their
variability.

(1)
GSC6543.2476 073758.97 -255202.3 (2000.0) 10.06 0
USNO0600.03990722 073759.019 -255202.74 (2000.0) 11.1 10.6 *
2MASS 073758.986 -255202.49 (2000.0)  7.946  7.701  7.478
073759.4 -255159 (2000.0) CPD-25.2613 9.4
073758.9 -255202 (2000.0) 975Vu 0.74 TYC6543.2476.1 plx=-21.1(18.2) (0.03 0.04)
073758.9 -255201 (2000.0) 979 0.67 TYC2-6543.2476.1 (9.86 0.02) (10.65 0.03)

(2)
GSC6543.2957 073842.83 -254835.9 (2000.0) 11.63 0
USNO0600.04022403 073842.827 -254836.41 (2000.0) 11.1 12.0
2MASS 073842.762 -254835.74 (2000.0)  6.538  5.547  5.277
IRAS07366-2541 073639.8 -254149 (1950.0)
    F12=0.44  F25=0.25L F60=0.40L F100=8.31L
    VAR=-1 LRS=-1
073842.4 -254830 (2000.0) CD-25.4838 10.0
073844.1 -254843 (2000.0) IRAS07366-2541 0.444 0.250L 0.400L 8.303L -1%
073844.1 -254843 (2000.0) SSC07366-2541 0.444 0.250L 0.400L 8.303L
073842.7 -254835 (2000.0) 1067 1.36 TYC6543.2957.1 plx=-37.7(59.4) (0.10 0.27)
073842.7 -254836 (2000.0) 1065 2.37 TYC2-6543.2957.1 (10.90 0.05) (13.68 0.34)

   Observations:

object         YYYYMMDD(UT)   mag  code
GSC6543.2476   20001230.585   94C  Toa.VSOLJ
GSC6543.2476   20010105.692   96C  Toa.VSOLJ
GSC6543.2476   20010108.722   96C  Toa.VSOLJ

GSC6543.2957   20001230.585   93C  Toa.VSOLJ
GSC6543.2957   20010105.692   97C  Toa.VSOLJ
GSC6543.2957   20010108.722   96C  Toa.VSOLJ

instruments:f200mm F4 Telephotolens+ST-8,unfiltered

Relayed from Akira Takao (drtakao@bronze.ocn.ne.jp)

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