Central Bureau for Astronomical Telegrams

IAUC 5774: N Oph 1993; 1993J

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                                                  Circular No. 5774
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505
MARSDEN@CFA or GREEN@CFA (.SPAN, .BITNET or .HARVARD.EDU)


NOVA OPHIUCHI 1993
     W. H. Allen, Carter Observatory, reports the following Johnson
photoelectric observations made with the 0.32-m telescope at the
Adams Lane Observatory (comparison stars HD 157792, HR 6486):  Apr.
19.72 UT, V = 9.97, B-V = +1.03, U-B = -0.10; 20.63, 9.83, +1.09,
-0.07; 21.71, 9.75, +1.05, -0.22.  Visual magnitude estimates by
A. F. Jones, Nelson, New Zealand:  Apr. 19.68 UT, 9.4; 21.45, 9.6;
22.70, 9.7; 23.64, 9.6.


SUPERNOVA 1993J IN NGC 3031
     Further Johnson photometry (cf. IAUC 5750, etc.) by M. Dumont,
A. Manda, J. Remis, J. Vandenbroere, Jungfraujoch Observatory,
Switzerland (D; 0.76-m telescope; communicated by M. Grenon); by B.
Kulesza, Olsztyn Observatory, Poland (K); by M. Mikolajewski, K.
Ruminski, M. Golebiewski, and B. Wikierski, N. Copernicus University,
Torun (M); and by Z.-Y. Zheng, X. Zhou, and H. Wu, Xing-Long
station, Beijing Astronomical Observatory (Z; 0.6-m Schmidt
telescope + CCD; Landolt standard comparison stars; errors about +/-
0.03 mag):  Apr. 7.57 UT, V = 11.71, U-B = -0.51, B-V = +0.24, V-R
= -1.10, V-I = -1.16 (Z); 9.60, 11.49, -0.43, +0.36, -1.11, -1.19
(Z); 10.57, 11.45, -0.31, +0.25, -1.05, -1.11 (Z); 11.58, 11.22,
-0.37, +0.39, -1.14, -1.32 (Z); 12.63, 11.13, -0.31, +0.37, -1.15,
-1.21 (Z); 13.60, 11.08, -0.34, +0.32, -1.15, -1.24 (Z); 14.62,
10.99, -0.32, +0.34, -1.22, -1.21 (Z); 15.59, 10.99, -0.25, +0.28,
-1.10, -1.18 (Z); 16.017, 10.85 +/- 0.04, -, +0.54 +/- 0.03, -, -
(D); 16.53, 10.92, -0.34, +0.37, -1.12, -1.19 (Z); 16.976, 10.88
+/- 0.04, -, +0.54 +/- 0.03, -, - (D); 17.55, 10.84, -0.27, +0.43,
-1.14, -1.28 (Z); 18.56, 10.86, -0.23, +0.46, -1.17, -1.24 (Z);
19.047, 10.84 +/- 0.02, -, +0.62 +/- 0.03, -, - (D); 19.57, 10.89,
-0.13, +0.53, -1.15, -1.20 (Z); 19.986, 10.82 +/- 0.02, -, +0.64
+/- 0.03, -, - (D); 20.55, 10.97, -0.13, +0.56, -1.09, -1.16 (Z);
20.91, 10.89 +/- 0.01, +0.04, +0.73, +0.62, +0.57 (M); 20.91,
10.79, -, +0.75, -, - (K); 21.55, 11.07, -0.10, +0.60, -1.04, -1.13
(Z); 22.02, 10.95 +/- 0.03, +0.17, +0.80, +0.62, +0.70 (M); 22.88,
11.09 +/- 0.01, +0.49:, +0.89, +0.75, +0.62 (M); 23.55, 11.12,
-0.12, +0.81, -1.04, -1.13 (Z).  Further Cousins photometry by P.
Prugniel, Observatoire de Haute Provence:  Apr. 22.00, V = 11.01,
B-V = +0.86, V-R = +0.40, V-I = +0.52; 23.00, 11.09, +0.87, +0.42,
+0.55; 24.00, 11.16, +0.93, +0.43, +0.57.


1993 April 24                  (5774)            Daniel W. E. Green

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