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IAUC 8744: C/2006 R1; 2006ep, 2006eq, 2006er

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IAUC number 

                                                  Circular No. 8744
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 R1 (SIDING SPRING)
     R. H. McNaught reports the discovery of a comet (discovery
observation tabulated below) on images taken by D. M. Burton with
the 0.5-m Uppsala Schmidt telescope in the course of the Siding
Spring Survey, the object reported as slightly diffuse with an
apparent 10" coma.  Additional images taken on Sept. 2.55 UT show
the object to show a consistent 'softness' and be noticeably larger
than stars of similar brightness.  McNaught adds that an image
taken by Burton on Sept. 2.725 shows the object to be "barely, but
certainly, diffuse in images taken after moonset".

     2006 UT             R.A. (2000) Decl.       Mag.
     Sept. 1.49494   22 51 49.46   -53 09 50.0   17.7

The available astrometry, the following preliminary parabolic
orbital elements, and an ephemeris appear on MPEC 2006-R08.

     T = 2006 Sept. 3.244 TT          Peri. = 251.186
                                      Node  = 220.610   2000.0
     q = 1.69969 AU                   Incl. = 159.844


SUPERNOVAE 2006ep, 2006eq, 2006er
     Several new apparent supernovae have been reported:  2006ep
independently on unfiltered CCD images by N. Joubert and W. Li
(LOSS/KAIT; cf. IAUC 8741; tabulated data below from KAIT) and by
K. Itagaki (cf. IAUC 8711; via S. Nakano, Sumoto, Japan); and
2006eq and 2006er on g-, r-, and i-band images by J. Frieman (on
behalf of the Sloan Digital Sky Survey II collaboration; details
given on CBET 611; approximate g magnitudes tabulated below).

SN      2006 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2006ep  Aug. 30.35   0 41 24.88  +25 29 46.7  17.8  43" W, 11".3 S
2006eq  Aug. 26     21 28 37.13  + 1 13 41.2  18.7  7" W, 7" S
2006er  Aug. 26      0 21 37.54  - 1 00 35.9  19.5  5" W, 2" N

Additional magnitudes for 2006ep in NGC 214:  Aug. 21.6 UT, [19
(Itagaki); 25.37, [19.2 (KAIT); 26.64, [19 (Itagaki); 30.637, 18.1
(Itagaki); 31.60, 17.8 (Itagaki).  Itagaki's position end figures
for 2006ep are 24s.88, 46".5.  SN 2006ep is a type-Ib/c supernova
(cf. CBET 612, 614), now near maximum.  SN 2006eq is of type Ia,
now within a week after maximum (cf. CBET 612).

                      (C) Copyright 2006 CBAT
2006 September 2               (8744)            Daniel W. E. Green

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