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Subject: Possible Nova in Scutum: precise astrometry Precise astrometry of possible nova in Scutum has been done with CCD images taken by B. Monard (Aug. 30.7 UT) and D. Rodriguez (Aug. 31.0 UT), with respect to the UCAC-2 reference frame (~100 stars, mean residual ~ 0".1): R.A. = 18:49:37.600 Decl. = -9:33:50.85 (J2000.0). No source can be seen within 2" of this position on the DSS 2 red image (Epoch = 1984.642) and the 2MASS public images (Epoch = 1999.690). This measurement slightly differs from previously reported values: 18:49:37.62, -9:33:50.3 (S. Wakuda, IAUC 8190) 18:49:37.59, -9:33:50.3 (O. Trondal, vsnet-discovery-nova 239), 18:49:37.65, -9:33:50.1 (A. Oksanen, vsnet-campaign-nova 1390, USNO-A2.0 frame with 0".5 RMS error). It is possibly caused by the difference of the reference catalogue. Note that a high proper motion star I introduced in [vsnet-campaign-nova 1373] >18:49:37.80 -09:33:51.5 (J2000.0, epoch=2000.0), r1mag=17.67, > r2mag=19.08, imag=19.41, pmRA = -514 mas/yr, pmDecl = -22 mas/yr cannot be identified on the DSS and 2MASS images. Sincerely Yours, Hitoshi Yamaoka, Kyushu Univ., Japan yamaoka@rc.kyushu-u.ac.jp
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