[IAUC] IAUC 9194: P/2011 A4 = P/2006 U1; TRANSIENT OBJECTS CONFIRMATION PAGE [25139-2011/04-R1]

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                                                  Circular No. 9194
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
New postal address:  Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
CBATIAU en EPS.HARVARD.EDU           ISSN 0081-0304
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


COMET P/2011 A4 = P/2006 U1 (LINEAR)
     L. Elenin, Lyubertsy, Russia, reports his recovery of P/2006
U1 (cf. IAUC 8763) on images obtained remotely at the ISON-NM
Observatory near Mayhill, NM, USA; his astrometry is provided
below, and the object is described as slightly diffuse with no
visible tail.

     2011 UT             R.A. (2000) Decl.       Mag.   Observer
     Jan. 14.51322   14 14 00.58   -21 18 30.4   19.5   Elenin
          14.52034   14 14 01.76   -21 18 36.5   19.3     "
          14.52751   14 14 02.94   -21 18 43.5   19.7     "
          15.46672   14 16 45.65   -21 32 55.8   19.3     "
          15.49142   14 16 49.95   -21 33 18.1   19.4     "
          15.51633   14 16 54.19   -21 33 41.2   19.1     "

The indicated correction to the prediction by S. Nakano (2010/2011
Comet Handbook) is Delta(T) = +0.24 day.  The following improved
elliptical elements by the undersigned are from 360 observations,
2006 Oct. 19-2011 Jan. 15 (mean residual 0".46).

                    Epoch = 2011 Apr. 29.0 TT
     T = 2011 Apr. 16.08061 TT        Peri. =  64.22882
     e = 0.8160435                    Node  = 240.47143 2000.0
     q = 0.5108788 AU                 Incl. =   8.42516
       a =  2.7771717 AU   n = 0.21296095   P =   4.63 years


TRANSIENT OBJECTS CONFIRMATION PAGE
     As announced on CBET 2629, the Central Bureau has established
a "Transient Objects Confirmation Page" (TOCP), activated on 2011
January 1, to replace the former "Unconfirmed-Objects" webpage that
the CBAT has run quite successfully since 2003 for extra-solar-
system objects, and which was updated manually by CBAT staff
members.  In contrast, this new webpage is designed to be updated
automatically both by astronomers worldwide who are registered (via
the CBAT) to do so and (when necessary) manually by CBAT staff.
Details are given at the new TOCP website:
http://www.cbat.eps.harvard.edu/unconf/tocp.html.  The TOCP will
automatically assign provisional designations based on position, of
the form TCP Jhhmmssss+ddmmsss.  Once spectroscopic confirmation is
reported, a final IAU designation will be announced (as in the past)
by the Central Bureau both via the TOCP and via CBET or IAUC
publication.  Separate TOCP tables show discovery data and follow-
up data.

                      (C) Copyright 2011 CBAT
2011 January 17                (9194)            Daniel W. E. Green