Electronic Telegram No. 4155
Central Bureau for Astronomical Telegrams
Mailing address:  Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
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Prepared using the Tamkin Foundation Computer Network


COMET P/2015 U1 = P/1999 V1 (CATALINA)
     Krisztian Sarneczky, Konkoly Observatory, reports his recovery of comet
P/1999 V1 (cf. IAUC 7302, 7305, 7323) on unfiltered CCD exposures taken with
the 0.60-m Schmidt telescope at the Piszkesteto Station of Konkoly Observatory
(astrometry tabulated below).  On Oct. 23.0 and 24.1 UT, the comet appeared
to have a "fuzzy" head with no tail in four stacked 150-s exposures.  He
subsequently identified stellar pre-recovery images of the comet on Sept.
13.0 with the same telescope.  The indicated correction to the prediction
by G. V. Williams on MPC 84326 is Delta(T) = -0.74 day.

     2015 UT             R.A. (2000) Decl.       Mag.   Observer
     Sept.13.03599    4 08 40.56   +36 29 40.4          Sarneczky
          13.03992    4 08 40.66   +36 29 41.4   20.5     "
     Oct. 22.98350    4 11 03.21   +38 09 15.3   19.7     "
          22.98940    4 11 03.06   +38 09 15.9   19.7     "
          22.99531    4 11 02.93   +38 09 16.2   19.6     "
          23.00122    4 11 02.82   +38 09 16.4   19.6     "
          24.05027    4 10 39.86   +38 10 04.0   19.7     "
          24.05816    4 10 39.64   +38 10 04.3   19.5     "
          24.06405    4 10 39.50   +38 10 04.7   19.8     "
          24.06996    4 10 39.38   +38 10 04.9   20.0     "

The following linked orbital elements by G. V. Williams from 104 observations
spanning 1999 Nov. 5-2015 Oct. 24 (mean residual 0".7) with an ephemeris
appear on MPEC 2015-U49.

                    Epoch = 2016 Sept. 9.0 TT
     T = 2016 Aug. 29.96488 TT        Peri. = 186.94479
     e = 0.5506409                    Node  = 294.37540 2000.0
     q = 2.9530119 AU                 Incl. =  15.56478
       a =  6.5716075 AU   n = 0.05850549   P =  16.85 years


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2015 CBAT
2015 October 24                  (CBET 4155)              Daniel W. E. Green