[IAUC] IAUC 9056: 2009gj; C/2009 C5, C/2009 D2-D4 [25139-2009/08-R1]

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                                                  Circular No. 9056
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
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SUPERNOVA 2009gj IN NGC 134
     C. J. Stockdale, B. Rentz, and C. M. Vandrevala, Marquette
University; K. W. Weiler, Naval Research Laboratory; S. Immler,
Goddard Space Flight Center; S. D. Van Dyk, Spitzer Science Center,
California Institute of Technology; N. Panagia, Space Telescope
Science Institute and Observatory of Catania; J. M. Marcaide,
University of Valencia; D. Pooley, University of Wisconsin at
Madison; R. A. Sramek, National Radio Astronomy Observatory; and S.
Ryder, Anglo-Australian Observatory, report the detection of radio
emission near the position of the type-IIb supernova 2009gj (cf.
CBETs 1856, 1858) with the Very Large Array radio telescope.  Flux
density measurements were made at 8.46 GHz (3.5 cm) of 0.33 +/-
0.04 mJy on June 27.43 UT, 0.59 +/- 0.04 mJy on July 2.56, and
1.02 +/- 0.04 on July 11.51.  The measured position of the radio
emission of R.A. = 0h30m28s.54, Decl. = -33o12'56".2 (equinox
2000.0) is in good agreement with the measured optical position end
figures 28s.56, 56".0 (CBET 1856).  The following 3-sigma upper
limits were measured:  at 22.46 GHz (1.3 cm), 1.9 mJy on June 28.45
and 1.5 mJy on July 5.51; at 4.86 GHz (6.0 cm), 0.19 mJy on June
29.44 and 0.38 mJy on July 2.60; and at 1.43 GHz (20 cm), 2.32 mJy
on July 2.64.  The radio emission has likely been caught on the
rise at 3.6 cm.  If the object behaves like other known type-IIb
supernovae, it should soon start increasing rapidly at longer radio
wavelengths.  Further study in all wavelength bands, especially
radio and x-ray, is warranted.  Radio observations at the Very
Large Array are continuing.


COMETS C/2009 C5 AND C/2009 D2-D4 (SOHO)
     Additional Kreutz sungrazers have been found on SOHO website
images (cf. IAUC 9055; ML = M. Kaluzny).  C/2009 C5 was faint and
slightly diffuse, peaking at mag about 7.  C/2009 D2 and C/2009 D3
were small and stellar in appearance, peaking at mag about 7 and
7-7.5, respectively.  C/2009 D4 showed a long, thin tail that was
visible in C3 images (which showed a small head that peaked at mag
about 2-3 and a tail length of about 1 degree) as well as in C2
SOHO images and in SECCHI COR2-A and COR2-B images.

 Comet        2009 UT       R.A.(2000)Decl.   Inst.  F    MPEC
 C/2009 C5    Feb. 11.529   21 54.9  -14 33   C3     ML   2009-M54
 C/2009 D2         19.179   22 27.5  -12 11   C3     JR   2009-M54
 C/2009 D3         19.321   22 26.9  -11 52   C3     BZ   2009-M54
 C/2009 D4         21.943   22 53.8  -11 59   C3/2*  TH   2009-M55

                      (C) Copyright 2009 CBAT
2009 July 14                   (9056)            Daniel W. E. Green