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IAUC 8470: 2005M, 2005N; 2005J, 2005K; C/2005 A1

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IAUC number


                                                  Circular No. 8470
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)


SUPERNOVAE 2005M AND 2005N
     Two apparent supernovae have been reported from unfiltered CCD
frames:  2005M by T. Puckett and D. George (cf. IAUC 8460; 0.60-m
automated supernova patrol telescope), and 2005N by J. Graham and
W. Li (cf. IAUC 8460; LOSS/KAIT).

SN      2005 UT        R.A.  (2000.0)  Decl.    Mag.     Offset
2005M   Jan. 19.37    9 37 32.36  +23 12 02.7   18.8   6".6 W, 10".8 S
2005N   Jan. 19.58   14 04 02.61  -14 37 48.8   18.8   39" E, 48" S

Additional approximate CCD magnitudes by the respective discoverers:
SN 2005M in NGC 2930, 2002 Apr. 4 UT, [20.0; 2005 Jan. 20.22, 18.2.
SN 2005N in NGC 5420, 2004 July 9.21, [20.0; 2005 Jan. 20.55, 18.3.


SUPERNOVAE 2005J AND 2005K
     M. Modjaz, R. Kirshner, and P. Challis, Harvard-Smithsonian
Center for Astrophysics, report that a spectrum (range 350-740 nm)
of SN 2005J (cf. IAUC 8467), obtained by M. Calkins on Jan. 19.40
UT with the F. L. Whipple Observatory 1.5-m telescope (+ FAST),
shows it to be a type-II supernova, probably within a few weeks
past explosion.  The spectrum consists of a blue continuum and
Balmer-line P-Cyg features.  Adopting the NED recession velocity of
4182 km/s for the host galaxy, the expansion velocity derived from
the minimum of the H_beta line is about 10000 km/s.  A noisy
spectrogram of SN 2005K (IAUC 8468) taken by Calkins on Jan. 19.42
reveals it to be a type-II supernova.  The spectrum shows P-Cyg
features of H_alpha and H_beta, and the expansion velocity derived
from the minimum of the H_beta line is about 5000 km/s (adopting
the NED recession velocity of 8151 km/s for the host galaxy).


COMET C/2005 A1 (LINEAR)
     Improved parabolic orbital elements from MPEC 2005-B03.

     T = 2005 Apr. 10.2414 TT         Peri. = 271.8882
                                      Node  = 355.8552  2000.0
     q = 0.906662 AU                  Incl. =  74.8859

     Total visual magnitude estimate by J. J. Gonzalez, Asturias,
Spain (0.20-m reflector):  Jan. 17.25 UT, 11.6 (coma diameter 2'.5).

                      (C) Copyright 2005 CBAT
2005 January 21                (8470)            Daniel W. E. Green

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