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IAUC 8725: C/2006 M2; 2006de, 2006df, 2006dg, 2006dh

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                                                  Circular No. 8725
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


COMET C/2006 M2 (SPACEWATCH)
     An apparently asteroidal object discovered in the course of
the Spacewatch project (discovery observation tabulated below) has
been found to be cometary following posting on the 'NEOCP'.  J.
Young reports that stacked Table Mountain exposures from June
21.23-21.28 UT show a circular 6" coma with little if any
condensation and no tail, while his images from June 20 showed only
a stellar appearance; on June 22.2, in better seeing, Young's
frames show what appears to be a varying degree of condensation,
suggesting some rotation, with a 4"-6" coma of mag 20.6.  R. S.
McMillan reports that CCD frames taken with the 1.8-m f/2.7
Spacewatch II reflector on June 22.35 show the object to be
possibly more diffuse than surrounding stars, but seeing was
described as 'soft'.

     2006 UT             R.A. (2000) Decl.       Mag.
     June 19.31525   16 03 44.52   + 2 13 53.0   21.2

The available astrometry, the following preliminary parabolic
orbital elements, and an ephemeris appear on MPEC 2006-M27.

     T = 2005 Nov. 20.441 TT          Peri. = 115.255
                                      Node  =  27.083   2000.0
     q = 5.20585 AU                   Incl. = 150.300


SUPERNOVAE 2006de, 2006df, 2006dg, 2006dh
     Four additional supernovae have been discovered on unfiltered
CCD images:  2006df by the 'Nearby Supernova Factory' collaboration
(cf. CBET 556), and the rest by N. Lee and W. Li (LOSS/KAIT; cf.
IAUC 8723).

SN      2006 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2006de  June  2.49  21 35 33.33  -19 01 46.5  17.2  11".2 W, 4".6 N
2006df  June 16.5   21 49 57.67  +32 01 58.7  19.5      -
2006dg  June 17.47  23 45 54.38  +12 03 59.0  18.3  10".7 W, 17".1 N
2006dh  June 21.25  13 41 43.08  +40 52 36.8  18.4  9".6 E, 8".2 N

Additional KAIT magnitudes for 2006de in MCG -03-55-3:  2005 Oct.
22.19 UT, [19.0; 2006 June 11.47, 17.5.  SN 2006df is a type-IIn
supernova.  Additional KAIT magnitudes for 2006dg in IC 1508:  2005
Nov. 21.19, [19.5; 2006 June 22.46, 18.5.  Additional KAIT
magnitudes for 2006dh in UGC 8670:  May 18.34, [19.2; June 4.30,
[18.2; 22.22, 18.3.

                      (C) Copyright 2006 CBAT
2006 June 22                   (8725)            Daniel W. E. Green

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