Electronic Telegram No. 4134
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director:  Daniel W. E. Green; Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbatiau@eps.harvard.edu (alternate cbat@iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


COMET P/2015 P1 = P/2007 V2 (HILL)
     Krisztian Sarneczky, Konkoly Observatory, reports his recovery of
comet P/2007 V2 (cf. IAUC 8894) on unfiltered CCD exposures taken by Adam
Sodor with the 0.60-m Schmidt telescope at the Piszkesteto Station of
Konkoly Observatory (astrometry tabulated below).  On Aug. 8.03 and 9.03 UT,
the comet showed a 6" coma and a 25" long tail in p.a. 250 deg in ten stacked
150-s exposures.

     2015 UT             R.A. (2000) Decl.       Mag.   Observer
     Aug.  8.01672    1 15 54.12   + 4 41 33.3   19.6   Sodor
           8.02657    1 15 54.38   + 4 41 34.3   19.4     "
           8.03642    1 15 54.58   + 4 41 34.3   20.1     "
           9.01785    1 16 17.51   + 4 42 44.8            "
           9.02769    1 16 17.76   + 4 42 45.4   20.0     "
           9.03753    1 16 17.98   + 4 42 46.0   20.1     "

The indicated correction to the prediction by G. V. Williams on MPC 79351 is
Delta(T) = -0.20 day.  The following linked orbital elements by Williams are
from 66 observations spanning 2007 Oct. 14-2015 Aug. 9 (mean residual 0".5):
Additional elements and an ephemeris are also given on MPEC 2015-P21.

                    Epoch = 2015 Oct. 25.0 TT
     T = 2015 Oct. 22.87890 TT        Peri. = 278.88272
     e = 0.3172713                    Node  =  99.81379 2000.0
     q = 2.7798334 AU                 Incl. =   2.47046
       a =  4.0716517 AU   n = 0.11996323   P =   8.22 years


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2015 CBAT
2015 August 10                   (CBET 4134)              Daniel W. E. Green