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IAUC 8590: C/2005 Q1; 2005do

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IAUC number

                                                  Circular No. 8590
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)

     An apparently asteroidal object discovered by the LINEAR
project (discovery observation given below), and posted on the 'NEO
Confirmation Page', has been found cometary on CCD images taken by
several observers.  J. Lacruz (Madrid, Spain, 0.30-m reflector)
found a fan-shaped tail 12" long in p.a. 200 deg on his co-added
images from July 28.03-28.05 UT.  J. E. McGaha (Tucson, AZ, 0.62-m
reflector) found a soft 9" coma with a slight elongation to the
southwest on his images from Aug. 28.4.  J. Young (Table Mountain,
0.6-m reflector) found a 6" coma with no central condensation on
his images taken on Aug. 28.4 and 29.5, with a 16"-long fan-shaped
tail spanning p.a. 190-230 deg on the second date (moonlight, poor
seing, and nearby stars preventing a view of the tail on the first

     2005 UT             R.A. (2000) Decl.       Mag.
     Aug. 27.41707    5 23 02.36   +64 38 01.3   18.9

The available astrometry, the following uncertain preliminary
parabolic orbital elements, and an ephemeris appear on MPEC 2005-Q48.

     T = 2006 Mar. 19.437 TT          Peri. =  63.404
                                      Node  =  88.927   2000.0
     q = 6.18426 AU                   Incl. = 106.456

SUPERNOVA 2005do IN UGC 2495
     Further to IAUC 8589, E. Lee and W. Li report the LOSS
discovery of an apparent supernova on unfiltered KAIT images taken
on Aug. 8.50 (at mag 17.4), 11.47 (mag 17.6), 22.51 (mag 18.1), and
23.46 UT (mag 18.2).  SN 2005do is located at R.A. = 3h02m00s.42,
Decl. = +41o34'34".2 (equinox 2000.0), which is 70".4 west and
62".0 south of the nucleus of UGC 2495.  A KAIT image taken on 2004
Jan. 30.16 showed nothing at this position (limiting mag about 19.0).
     F. J. D. Serduke, A. Blum, J. Scala, and A. V. Filippenko,
University of California, Berkeley, report that inspection of a CCD
spectrum (range 330-1000 nm), obtained on Aug. 26 UT with the Shane
3-m telescope at Lick Observatory, shows that 2005do is a supernova
of type Ia, about 1-2 months past maximum brightness.

                      (C) Copyright 2005 CBAT
2005 August 29                 (8590)            Daniel W. E. Green

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