[Iaude] CBET 4538: 20180813 : COMET P/2018 P1 = P/2010 A1 (HILL)

quai at eps.harvard.edu quai at eps.harvard.edu
Mon Aug 13 09:46:44 EDT 2018


                                                  Electronic Telegram No. 4538
Central Bureau for Astronomical Telegrams
Mailing address:  Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbatiau at eps.harvard.edu (alternate cbat at iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


COMET P/2018 P1 = P/2010 A1 (HILL)
     E. Schwab, Egelsbach, Germany, reports his recovery of comet P/2010 A1
(cf. IAUCs 9104, 9107) on CCD images obtained by P. Ruiz on Aug. 10.2 UT with
a 1.0-m f/4.4 reflector at the European Space Agency's Optical Ground Station,
Tenerife, Spain; the comet shows a faint tail extending about 15" in p.a.
260 degrees.  M. Micheli reported confirming CCD astrometry from observations
obtained on Aug. 12.3 by F. Monteiro and five other observers with a 1.0-m
f/7 reflector at the Observatorio Astronomico do Sertao de Itaparica at
Nova Itacuruba, Brazil.

     2018 UT             R.A. (2000) Decl.       Mag.   Observer
     Aug. 10.18050    3 57 28.00   +17 38 53.3   19.0   Ruiz
          10.18502    3 57 28.54   +17 38 56.0   19.1     "
          10.18804    3 57 28.90   +17 38 57.6   19.0     "
          12.29450    4 01 41.51   +17 58 57.9   20.7   Monteiro
          12.29700    4 01 41.82   +17 58 59.3   19.6     "
          12.29947    4 01 42.11   +17 59 00.7   20.6     "

     The indicated correction to the prediction by B. G. Marsden on MPC 94681
is Delta(T) = +0.39 day.  The following linked orbital elements by G. V.
Williams (from 150 observations spanning 2010 Jan. 6-2018 Aug. 12; mean
residual 0".6) and an ephemeris appear on MPEC 2018-P80.

                    Epoch = 2018 Oct.  9.0 TT
     T = 2018 Oct. 15.15907 TT        Peri. =  13.28370
     e = 0.5542467                    Node  =  47.32113 2000.0
     q = 1.9571781 AU                 Incl. =  10.30827
       a =  4.3907202 AU   n = 0.10712737   P =   9.20 years


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2018 CBAT
2018 August 13                   (CBET 4538)              Daniel W. E. Green



More information about the Iaude mailing list