P/2001 T3 (NEAT)
Epoch 2018 June 11.0 TT = JDT 2458280.5
T 2018 June  9.50134 TT                                 MPCW
q   2.4853397            (2000.0)            P               Q
n   0.06023086     Peri.  356.77946     +0.61382989     -0.74088027
a   6.4455008      Node    55.16339     +0.73151499     +0.40397684
e   0.6144070      Incl.   19.39738     +0.29681423     +0.53656234
P  16.36

 P/2010 A1 (Hill)
Epoch 2018 Oct. 9.0 TT = JDT 2458400.5
T 2018 Oct. 15.15907 TT                                 MPCW
q   1.9571781            (2000.0)            P               Q
n   0.10712737     Peri.   13.28370     +0.49355692     -0.85970649
a   4.3907202      Node    47.32113     +0.78069911     +0.37128244
e   0.5542467      Incl.   10.30827     +0.38328902     +0.35079068
P   9.20

                                                 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@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/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

                                                 Electronic Telegram No. 4539
Central Bureau for Astronomical Telegrams
Mailing address:  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/2018 P2 = P/2001 T3 (NEAT)
    E. Schwab, Egelsbach, Germany, reports his recovery of comet P/2001 T3
(cf. IAUC 7733) 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 10" in p.a.
270 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. 10.19601    5 51 36.15   +27 48 20.5   18.8   Ruiz
         10.20355    5 51 37.01   +27 48 23.0   18.8     "
         10.21109    5 51 37.86   +27 48 26.1   19.0     "
         12.31315    5 55 38.41   +28 01 00.4   20.8   Monteiro
         12.31562    5 55 38.71   +28 01 00.9   20.4     "

    The indicated correction to the prediction by G. V. Williams on MPC 94679
is Delta(T) = -1.16 days.  The following linked orbital elements by G. V.
Williams (from 143 observations spanning 2001 Aug. 20-2018 Aug. 12; mean
residual 0".5) and an ephemeris appear on MPEC 2018-P81.

                   Epoch = 2018 June 11.0 TT
    T = 2018 June  9.50134 TT        Peri. = 356.77946
    e = 0.6144070                    Node  =  55.16339 2000.0
    q = 2.4853397 AU                 Incl. =  19.39738
      a =  6.4455008 AU   n = 0.06023086   P =  16.36 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 4539)              Daniel W. E. Green