Central Bureau for Astronomical Telegrams
IAUC 7657: 2001cz; 1993J, 1979C; 2001 KX_76
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Circular No. 7657
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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SUPERNOVA 2001cz IN NGC 4679
R. Chassagne, Ste. Clotilde, Ile de Reunion, reports the
discovery of an apparent supernova (mag about 14.7) on unfiltered
CCD images taken on July 4.64 and 5.61 UT with a 0.30-m reflector.
SN 2001cz is located at R.A. = 12h47m30s.17, Decl. = -39o34'48".1
(equinox 2000.0), which is 0".6 west and 31".4 south of the nucleus
of NGC 4679. Images taken on 2000 Mar. 10.9, and on 2001 Mar. 21.9
and May 21.7, show nothing at this position (limiting mag about
19.0), and SN 2001cz does not appear on a Digital Sky Survey (U.K.
Schmidt) image taken on 1982 May 16.47 (limiting mag about 21.0).
SUPERNOVAE 1993J AND 1979C
P. Chandra, Tata Institute of Fundamental Research (TIFR),
Mumbai; S. Bhatnagar, National Centre for Radio Astrophysics, TIFR,
Pune; and A. Ray, TIFR, Mumbai, report the detection of SN 1993J in
NGC 3031 for the first time at 610 MHz with the Giant Meter Radio
Telescope (GMRT) on 2001 Mar. 24. The flux density at 609.37 MHz
was 40.9 +/- 1.2 mJy. The host galaxy's center had a flux density
of 70.3 mJy. SN 1993J was also detected at 1420 MHz with the GMRT
on 2001 June 2 (32.2 +/- 0.3 mJy) and on 2000 Dec. 16 (47.7 +/- 0.6
mJy). They also report the first detection of SN 1979C in NGC 4321
with the GMRT at 610 MHz on 2001 Mar. 24 with a flux density of
13.1 +/- 1.4 mJy. The host galaxy's center had a flux density of
58.4 mJy. SN 1979C was also detected at 1420 MHz band by the GMRT
on 2000 Nov. 9 (36.6 +/- 0.6 mJy).
2001 KX_76
R. L. Millis, Lowell Observatory, on behalf of the Deep
Ecliptic Survey Team, reports the following photometric magnitudes
of 2001 KX_76 (cf. MPEC 2001-N01) obtained by J. L. Elliot, S. D.
Kern, and D. J. Osip at the 6.5-m Magellan Telescope on June 9: R
= 19.6 +/- 0.1, B-V = +0.95 +/- 0.15, V-R = +0.5 +/- 0.1, V-I =
+1.0 +/- 0.1. Best-fitting orbital elements by L. Wasserman place
2001 KX_76 at r = 43.5 +/- 0.2 AU and Delta = 42.5 +/- 0.2 AU; if
these distances are correct, 2001 KX_76 appears to be intrinsically
brighter than (20000) Varuna = 2000 WR_106 (IAUC 7554).
Radiometric, astrometric, and spectroscopic observations of 2001
KX_76 are encouraged.
(C) Copyright 2001 CBAT
2001 July 5 (7657) Daniel W. E. Green
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