MPEC 2004-J69 : COMET C/2001 Q4 (NEAT)
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Read MPEC 2004-J68
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M.P.E.C. 2004-J69 Issued 2004 May 15, 14:21 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Commission 20 of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Supported in part by the Steven and Michele Kirsch Foundation
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
COMET C/2001 Q4 (NEAT)
Observations:
CK01Q040 C2004 03 28.97716 00 44 50.21 -65 42 12.7 EJ069834
CK01Q040 C2004 04 05.97547 01 22 43.56 -66 00 15.1 EJ069834
CK01Q040 C2004 04 19.94690 03 30 09.37 -63 59 02.8 EJ069834
CK01Q040 C2004 04 19.95958 03 30 19.43 -63 58 36.2 EJ069834
CK01Q040 C2004 04 25.97841 04 58 27.98 -57 32 57.2 EJ069834
CK01Q040 C2004 04 25.99203 04 58 40.63 -57 31 31.1 EJ069834
CK01Q040 C2004 04 27.94838 05 28 53.41 -53 30 59.5 EJ069834
CK01Q040 C2004 04 27.96510 05 29 08.67 -53 28 35.5 EJ069834
CK01Q040 C2004 04 29.97645 05 59 19.45 -47 55 57.1 EJ069834
CK01Q040 C2004 04 29.99645 05 59 36.97 -47 52 08.7 EJ069834
CK01Q040 C2004 04 30.98529 06 13 50.42 -44 32 49.2 EJ069834
CK01Q040 C2004 04 30.99547 06 13 59.04 -44 30 37.5 EJ069834
CK01Q040 C2004 05 04.96891 07 05 23.21 -27 16 29.5 EJ069834
CK01Q040 C2004 05 04.99566 07 05 41.70 -27 08 27.7 EJ069834
CK01Q040 C2004 05 06.37605 07 21 07.78 -20 04 27.9 EJ069413
CK01Q040 C2004 05 06.38033 07 21 10.52 -20 03 07.3 EJ069413
CK01Q040 C2004 05 06.38962 07 21 16.39 -20 00 13.0 EJ069413
CK01Q040 C2004 05 06.39344 07 21 18.84 -19 59 01.1 EJ069413
CK01Q040 2004 05 06.44942 07 21 54.64 -19 41 57.2 3.6 T EJ069372
CK01Q040 2004 05 06.45292 07 21 56.86 -19 40 51.7 EJ069372
CK01Q040 2004 05 06.47931 07 22 13.60 -19 32 35.1 3.7 T EJ069372
CK01Q040 C2004 05 06.95101 07 27 11.12 -17 04 06.0 EJ069834
CK01Q040 C2004 05 06.97359 07 27 24.98 -16 56 59.6 EJ069834
CK01Q040 2004 05 10.45080 07 59 36.90 +00 34 20.0 5.5 T EJ069372
CK01Q040 2004 05 10.45497 07 59 38.91 +00 35 30.4 EJ069372
CK01Q040 2004 05 10.47233 07 59 47.42 +00 40 21.6 5.3 T EJ069372
CK01Q040 C2004 05 10.82527 08 02 39.96 +02 17 44.1 9.2 N EJ069213
CK01Q040 C2004 05 11.10335 08 04 53.03 +03 32 50.9 10.0 N EJ069750
CK01Q040 C2004 05 11.11621 08 04 59.04 +03 36 15.8 9.7 N EJ069750
CK01Q040 C2004 05 11.11891 08 05 00.34 +03 36 58.8 9.8 N EJ069750
CK01Q040 C2004 05 11.12012 08 05 00.87 +03 37 18.0 9.7 N EJ069750
CK01Q040 C2004 05 11.82039 08 10 25.06 +06 39 25.0 EJ069046
CK01Q040 C2004 05 11.82267 08 10 26.06 +06 39 59.4 EJ069046
CK01Q040 C2004 05 11.82406 08 10 26.66 +06 40 20.4 EJ069046
CK01Q040 C2004 05 11.82998 08 10 29.29 +06 41 52.3 5.0 N EJ069104
CK01Q040 C2004 05 11.83171 08 10 30.06 +06 42 18.4 4.5 N EJ069104
CK01Q040 C2004 05 11.83216 08 10 30.30 +06 42 23.5 EJ069046
CK01Q040 C2004 05 11.83328 08 10 30.80 +06 42 42.7 4.8 N EJ069104
CK01Q040 C2004 05 11.83387 08 10 31.03 +06 42 48.8 EJ069557
CK01Q040 C2004 05 11.83396 08 10 31.12 +06 42 50.7 EJ069046
CK01Q040 C2004 05 11.83494 08 10 31.51 +06 43 07.5 4.2 N EJ069104
CK01Q040 C2004 05 11.83501 08 10 31.55 +06 43 06.4 EJ069557
CK01Q040 C2004 05 11.83617 08 10 32.07 +06 43 24.1 EJ069557
CK01Q040 C2004 05 11.83733 08 10 32.59 +06 43 41.5 EJ069557
CK01Q040 C2004 05 11.83848 08 10 33.12 +06 43 59.3 EJ069557
CK01Q040 C2004 05 11.83964 08 10 33.63 +06 44 16.6 EJ069557
CK01Q040 C2004 05 11.84080 08 10 34.16 +06 44 34.4 EJ069557
CK01Q040 C2004 05 11.84194 08 10 34.67 +06 44 51.6 EJ069557
CK01Q040 C2004 05 11.84310 08 10 35.18 +06 45 09.2 EJ069557
CK01Q040 C2004 05 11.84427 08 10 35.71 +06 45 26.5 EJ069557
CK01Q040 C2004 05 12.85961 08 17 58.98 +10 51 10.7 9.1 N EJ069938
CK01Q040 C2004 05 12.86308 08 18 00.42 +10 51 58.5 9.0 N EJ069938
CK01Q040 C2004 05 12.86655 08 18 01.88 +10 52 46.7 9.0 N EJ069938
CK01Q040 C2004 05 13.13374 08 19 53.56 +11 53 49.8 9.9 N EJ069448
CK01Q040 C2004 05 13.16887 08 20 07.97 +12 01 42.5 10.0 N EJ069448
CK01Q040 C2004 05 13.85672 08 24 46.50 +14 31 27.7 9.6 N EJ069A32
CK01Q040 C2004 05 13.85741 08 24 46.75 +14 31 36.6 9.5 N EJ069A32
CK01Q040 C2004 05 13.85810 08 24 47.04 +14 31 45.3 9.5 N EJ069A32
CK01Q040 C2004 05 13.85880 08 24 47.33 +14 31 53.9 9.5 N EJ069A32
CK01Q040 C2004 05 13.87215 08 24 52.36 +14 34 47.6 9.0 N EJ069J76
CK01Q040 C2004 05 13.87240 08 24 52.46 +14 34 50.6 9.0 N EJ069J76
CK01Q040 C2004 05 13.87270 08 24 52.58 +14 34 54.1 9.0 N EJ069J76
CK01Q040 C2004 05 14.17900 08 26 52.23 +15 38 26.5 10.3 N EJ069448
CK01Q040 C2004 05 14.17952 08 26 52.36 +15 38 32.7 10.4 N EJ069448
CK01Q040 C2004 05 14.17994 08 26 52.57 +15 38 37.8 10.3 N EJ069448
CK01Q040 C2004 05 14.18073 08 26 52.84 +15 38 47.6 10.4 N EJ069448
CK01Q040 C2004 05 14.45567 08 28 38.60 +16 34 11.8 EJ069347
CK01Q040 C2004 05 14.45993 08 28 40.21 +16 35 02.6 EJ069347
CK01Q040 C2004 05 14.46427 08 28 41.82 +16 35 54.4 EJ069347
CK01Q040 C2004 05 14.49101 08 28 51.89 +16 41 13.3 EJ069900
CK01Q040 C2004 05 14.49236 08 28 52.39 +16 41 29.4 EJ069900
CK01Q040 C2004 05 14.82323 08 30 56.90 +17 45 58.7 9.4 N EJ069213
CK01Q040 C2004 05 14.82344 08 30 56.99 +17 45 56.5 EJ069046
CK01Q040 C2004 05 14.82383 08 30 57.14 +17 46 00.8 EJ069046
CK01Q040 C2004 05 14.82421 08 30 57.28 +17 46 05.1 EJ069046
CK01Q040 C2004 05 14.82446 08 30 57.29 +17 46 14.2 9.5 N EJ069213
CK01Q040 C2004 05 14.82643 08 30 58.10 +17 46 30.8 EJ069046
CK01Q040 C2004 05 14.82683 08 30 58.24 +17 46 35.4 EJ069046
CK01Q040 C2004 05 14.82763 08 30 58.53 +17 46 44.6 EJ069046
CK01Q040 C2004 05 14.86669 08 31 12.80 +17 54 14.2 9.5 N EJ069442
CK01Q040 C2004 05 14.86702 08 31 12.98 +17 54 17.8 9.5 N EJ069442
CK01Q040 C2004 05 14.86718 08 31 13.03 +17 54 19.5 9.6 N EJ069442
CK01Q040 C2004 05 14.86734 08 31 13.09 +17 54 21.3 9.5 N EJ069442
CK01Q040 C2004 05 14.86749 08 31 13.18 +17 54 25.2 9.5 N EJ069442
CK01Q040 C2004 05 14.86830 08 31 13.43 +17 54 32.6 9.6 N EJ069442
CK01Q040 C2004 05 14.86845 08 31 13.50 +17 54 34.6 9.5 N EJ069442
CK01Q040 C2004 05 14.86861 08 31 13.55 +17 54 35.8 9.6 N EJ069442
CK01Q040 C2004 05 14.86877 08 31 13.60 +17 54 37.9 9.5 N EJ069442
CK01Q040 C2004 05 14.86894 08 31 13.61 +17 54 41.3 9.5 N EJ069442
Observer details:
046 Klet. Observers M. Tichy, J. Ticha. 0.57-m f/5.2 reflector + CCD.
104 San Marcello Pistoiese. Observers L. Tesi, A. Boattini, M. Tombelli,
G. Fagioli. Measurers G. Forti, L. Tesi, A. Boattini, M. Tombelli.
0.60-m f/4 reflector + CCD.
213 Observatorio Montcabre. Observer R. Naves. Measurer M. Campas. 0.30-m
f/5.5 Schmidt-Cassegrain + CCD.
347 Utsunomiya-Imaizumi. Observer M. Suzuki. 0.20-m f/10 Schmidt-Cassegrain
+ CCD.
372 Geisei. Observer T. Seki. 0.60-m f/3.5 reflector.
413 Siding Spring. Observer R. H. McNaught. 1.0-m f/8 reflector + CCD.
442 Gualba Observatory. Observer A. Sanchez. 0.31-m f/3.3 Schmidt-Cassegrain
+ CCD.
448 Desert Moon Observatory. Observer B. L. Stevens. 0.3-m
Schmidt-Cassegrain + CCD.
557 Ondrejov. Observer P. Kusnirak. 0.65-m f/3.6 reflector + CCD.
750 Hobbs Observatory, Fall Creek. Observer R. Elliott. 0.3-m f/10
Schmidt-Cassegrain reflector + CCD.
834 Buenos Aires-AAAA. Observers R. Mackintosh, R. Caprio. Measurer
R. Mackintosh. 0.25-m f/6.3 Schmidt-Cassegrain + CCD.
900 Moriyama. Observer Y. Ikari. 0.25-m f/6.3 Schmidt-Cassegrain + CCD.
938 Linhaceira. Observer R. Goncalves. 0.25-m f/6.7 Schmidt-Cassegrain +
CCD.
A32 Panker. Observer H. Denzau. 0.36-m f/5.5 Schmidt-Cassegrain + CCD.
J76 La Murta. Observer S. Pastor, J. A. Reyes. 0.40-m f/3.3
Schmidt-Cassegrain + CCD.
Orbital elements:
C/2001 Q4 (NEAT)
Epoch 2004 June 4.0 TT = JDT 2453160.5
T 2004 May 15.96707 TT MPC
q 0.9619575 (2000.0) P Q
z -0.0007732 Peri. 1.20653 -0.86517146 -0.06625228
+/-0.0000006 Node 210.27852 -0.46795840 -0.24964382
e 1.0007438 Incl. 99.64258 -0.18025894 +0.96606863
From 688 observations 2001 Aug. 24-2004 May 14, mean residual 0".88.
The "original" and "future" barycentric values of 1/a are +0.000045
and -0.000699 (+/- 0.000001) AU^-1, respectively. A somewhat comparable
nongravitational solution, but satisfying 693 observations with mean
residual 0".80, now gives A1 = +1.24 +/- 0.07, A2 = -0.19 +/- 0.05.
Brian G. Marsden (C) Copyright 2004 MPC M.P.E.C. 2004-J69
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