Circular No. 8699
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)
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Phone 617-495-7440/7244/7444 (for emergency use only)


COMET C/2006 G1 (McNAUGHT)
     R. H. McNaught reports his discovery of a comet with a coma
diameter of about 10" on CCD images taken with the 0.5-m Uppsala
Schmidt telescope in poor, variable seeing conditions (discovery
observation below).  Follow-up observations by McNaught on Apr.
6.6-6.7 UT showed a faint, diffuse tail about 8" long in p.a. about
300 deg.

     2006 UT             R.A. (2000) Decl.       Mag.
     Apr.  5.69705   14 31 48.10   -42 58 12.3   18.0

The available astrometry, the following very preliminary parabolic
orbital elements, and an ephemeris appear on MPEC 2006-G27.  It is
likely that this comet is of short period.

     T = 2006 Oct. 10.798 TT          Peri. =  17.146
                                      Node  = 283.217   2000.0
     q = 1.59344 AU                   Incl. =  20.334


SUPERNOVAE 2006bm, 2006bn, 2006bo
     Three additional apparent supernova have been reported from
unfiltered CCD images:  2006bm by T. Puckett and G. Sostero (0.60-m
reflector at Ellijay, GA; cf. IAUC 8693), 2006bn by L. A. G. Monard
(cf. IAUC 8697), and 2006bo by T. Boles (cf. IAUC 8698).

SN      2006 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2006bm  Apr. 5.195  11 18 21.41  +28 12 43.5  18.1  4".1 W, 10".5 N
2006bn  Apr. 5.087  20 00 15.75  -38 34 18.3  18.4  42" E, 24" N
2006bo  Apr. 5.148  20 30 41.90  + 9 11 40.8  17.6  12" W, 14" N

Additional magnitudes for 2006bm:  2005 Sept. 10 UT, [19.4; 2006 Apr.
6.125, 17.9.  Additional magnitudes for 2006bn in IC 4926:  2005
Sept. 21.25, [19.0; 2006 Apr. 6.094, 18.4 +/- 0.3; 7.111, 18.6 +/- 0.2.
Nothing is visible at the location of 2006bn on the Digitized Sky
Survey (limiting red mag 20.5).  Additional magnitudes for 2006bo
in UGC 11578:  2005 Oct. 9 and Nov. 28, [19.5 (Boles); 2006 Apr. 7.137,
17.1 (Monard); 7.151, 17.6 (Boles).  Monard's image yields position
end figures 41s.95, 40".8 for 2006bo.  Nothing is visible at the
location of 2006bo on Digitized Sky Survey plates from 1990 Aug. 20
(limiting red mag 20.5) and 1998 June 15 (limiting blue mag 21.0).

                      (C) Copyright 2006 CBAT
2006 April 7                   (8699)            Daniel W. E. Green