[IAUC] IAUC 8733: 2006du, 2006dv, 2006dw; C/2006 M4; 177P [25139-2007/05-R1]
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Circular No. 8733
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
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SUPERNOVAE 2006du, 2006dv, 2006dw
Three additional apparent supernovae have been discovered on
unfiltered CCD images: 2006du by P. Luckas, O. Trondal, and M.
Schwartz (0.35-m telescope, Perth; cf. IAUC 8713), 2006dv by T.
Puckett and M. Peoples (0.50-m reflector, Ellijay, GA; cf. IAUC
8716), and 2006dt by N. Lee and W. Li (via LOSS/KAIT; cf. IAUC
8732).
SN 2006 UT R.A. (2000.0) Decl. Mag. Offset
2006du July 18.9 0 05 12.26 -11 29 23.6 17.0 13".2 W, 45".6 N
2006dv July 20.32 23 15 53.06 + 5 07 50.2 17.7 1".3 W, 6".9 N
2006dw July 23.25 16 17 43.29 +34 57 55.1 15.8 3".5 W, 1".7 N
Additional magnitudes for 2006du in IC 1529: 1983 Oct. 1, [21.0
(Digitized Sky Survey); 2006 June 10.8 UT, [18.0 (Luckas); July
22.9, 16.7 (Luckas). Additional magnitudes for 2006dv in UGC 12461:
2005 Aug. 9, [19.4; 2006 July 24.31, 17.5. Additional magnitudes
for 2006dw: July 12.24, [19.5; 16.26, 18.3. The nucleus of the
apparent host galaxy of 2006dw is located 37" east and 142" south
of the center of NGC 6109.
COMET C/2006 M4 (SWAN)
Twenty-six co-added 15-s CCD images taken by N. Teamo and S. F.
Hoenig (0.35-m reflector, Punaauia, Tahiti) on July 17.2 UT show an
8" nuclear condensation surrounded by a fainter 45" coma (total mag
12.7) and a 2'.1 tail in p.a. 160 deg. Three combined 30-s
exposures by A. C. Gilmore (1.0-m reflector, Mt. John) on July 17.3
show a 2'.4 tail in p.a. 165 deg and a well-condensed coma about 40"
in diameter.
Improved parabolic orbital elements to those published on IAUC
8729, taken from MPEC 2006-O17:
T = 2006 Sept.28.613 TT Peri. = 62.851
Node = 148.746 2000.0
q = 0.77860 AU Incl. = 111.822
COMET 177P/BARNARD
Visual total-magnitude estimates: July 7.07 UT, 13.2 (J. J.
Gonzalez, Leon, Spain, 0.20-m reflector); 16.42, 10.3 (D. A. J.
Seargent, The Entrance, N.S.W., 25x100 binoculars); 19.91, 9.8 (M.
Meyer, Frauenstein, Germany, 20x100 binoc.); 20.89, 9.1 (Meyer);
22.99, 8.5 (Gonzalez, 7x50 binoc.).
(C) Copyright 2006 CBAT
2006 July 24 (8733) Daniel W. E. Green
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