MPEC 1999-U15: COMET C/1999 T1 (MCNAUGHT-HARTLEY)
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M.P.E.C. 1999-U15 Issued 1999 Oct. 19, 21:02 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.
BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
COMET C/1999 T1 (MCNAUGHT-HARTLEY)
Observations:
CJ99T010 C1999 10 11.19162 02 01 49.1 -39 39 57 16.4 T 807
CJ99T010 C1999 10 11.47286 02 01 36.11 -39 42 27.6 16.0 T 423
CJ99T010 C1999 10 11.54506 02 01 32.78 -39 43 04.5 16.2 T 423
CJ99T010 C1999 10 11.56470 02 01 31.89 -39 43 14.7 16.2 T 423
CJ99T010 C1999 10 11.58691 02 01 30.75 -39 43 25.7 16.3 T 423
CJ99T010 C1999 10 11.60500 02 01 29.96 -39 43 36.3 17.7 N 428
CJ99T010 C1999 10 11.60956 02 01 29.74 -39 43 38.5 17.6 N 428
CJ99T010 C1999 10 11.61424 02 01 29.55 -39 43 40.6 17.5 N 428
CJ99T010 C1999 10 11.61468 02 01 29.63 -39 43 39.1 16.3 T 423
CJ99T010 C1999 10 15.33612 01 58 32.75 -40 14 45.9 15.4 N 467
CJ99T010 C1999 10 15.34564 01 58 32.28 -40 14 50.5 467
CJ99T010 C1999 10 15.35399 01 58 31.84 -40 14 54.1 15.2 N 467
CJ99T010 C1999 10 15.45025 01 58 27.22 -40 15 41.2 413
CJ99T010 C1999 10 15.45176 01 58 27.13 -40 15 42.1 413
CJ99T010 C1999 10 15.55225 01 58 22.17 -40 16 31.1 16.3 T 423
CJ99T010 C1999 10 15.56336 01 58 21.59 -40 16 36.6 16.3 T 423
CJ99T010 C1999 10 15.57446 01 58 21.10 -40 16 42.6 16.4 T 423
CJ99T010 C1999 10 15.60778 01 58 19.42 -40 16 59.1 16.9 T 423
CJ99T010 C1999 10 16.65644 01 57 28.12 -40 25 16.4 413
CJ99T010 C1999 10 16.66540 01 57 27.67 -40 25 20.7 413
CJ99T010 C1999 10 16.66744 01 57 27.57 -40 25 21.8 413
CJ99T010 C1999 10 17.44363 01 56 49.35 -40 31 23.2 16.5 T 423
CJ99T010 C1999 10 17.45475 01 56 48.81 -40 31 28.5 16.0 T 423
CJ99T010 C1999 10 17.47260 01 56 47.91 -40 31 36.0 15.4 N 467
CJ99T010 C1999 10 17.48003 01 56 47.56 -40 31 39.8 15.4 N 467
CJ99T010 C1999 10 17.48807 01 56 47.15 -40 31 44.7 16.5 T 423
CJ99T010 C1999 10 17.48821 01 56 47.16 -40 31 43.5 15.3 N 467
CJ99T010 C1999 10 17.57222 01 56 43.02 -40 32 22.2 16.0 T 367
CJ99T010 C1999 10 17.57847 01 56 42.67 -40 32 25.6 367
CJ99T010 C1999 10 17.58472 01 56 42.39 -40 32 28.5 367
CJ99T010 bC1999 10 17.63160 01 56 40.07 -40 32 51.5 15.6 T 360
CJ99T010 bC1999 10 17.63455 01 56 39.86 -40 32 52.4 360
CJ99T010 bC1999 10 17.63681 01 56 39.73 -40 32 53.4 360
CJ99T010 C1999 10 17.69427 01 56 36.81 -40 33 18.6 413
CJ99T010 C1999 10 17.69638 01 56 36.70 -40 33 19.6 413
Observer details:
360 Kuma Kogen. Observer A. Nakamura. 0.60-m f/6.0 Ritchey-Chretien + CCD.
367 Yatsuka. Observer H. Abe. 0.26-m f/6.0 reflector + CCD.
413 Siding Spring. Observer R. H. McNaught. 1.0-m reflector + CCD.
423 North Ryde. Observer S. McAndrew. 0.20-m f/4 hyperbolic astrograph + CCD.
428 Reedy Creek. Observer J. Broughton. 0.25-m f/6.3 Schmidt-Cassegrain
+ CCD.
467 Auckland Observatory. Observers I. P. Griffin, M. Arthur. 0.5-m
reflector + CCD.
807 Cerro Tololo. Observers A. Becker, C. Stubbs, J. Perez. 0.9-m
reflector + CCD
Orbital elements:
C/1999 T1 (McNaught-Hartley)
T 2000 Dec. 13.4761 TT Marsden
q 1.172071 (2000.0) P Q
Peri. 344.7400 -0.9658185 -0.2556429
Node 182.4974 +0.1064672 -0.5421405
e 1.0 Incl. 79.9900 -0.2363457 +0.8004564
From 56 observations 1999 Oct. 7-17.
Ephemeris:
C/1999 T1 (McNaught-Hartley)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
1999 10 19 01 55.53 -40 43.1 4.574 5.262 129.3 8.4 15.5
1999 10 29 01 46.92 -41 48.1 4.538 5.168 124.7 9.1 15.4
1999 11 08 01 38.16 -42 32.9 4.522 5.073 118.8 9.9 15.3
1999 11 18 01 29.84 -42 56.7 4.523 4.978 112.0 10.6 15.2
1999 11 28 01 22.47 -43 00.4 4.538 4.883 104.7 11.3 15.2
1999 12 08 01 16.49 -42 46.1 4.561 4.787 97.3 11.8 15.1
1999 12 18 01 12.18 -42 16.5 4.588 4.690 89.8 12.1 15.0
1999 12 28 01 09.70 -41 34.9 4.615 4.592 82.5 12.3 14.9
2000 01 07 01 09.08 -40 44.4 4.638 4.494 75.5 12.2 14.9
2000 01 17 01 10.27 -39 47.7 4.653 4.395 68.9 12.1 14.8
2000 01 27 01 13.17 -38 47.6 4.656 4.295 62.7 11.8 14.7
Brian G. Marsden (C) Copyright 1999 MPC M.P.E.C. 1999-U15
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