MPEC 1998-O23 : COMET C/1998 M4 (LINEAR)
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M.P.E.C. 1998-O23 Issued 1998 July 29, 13:58 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
COMET C/1998 M4 (LINEAR)
Observations:
CJ98M040 C1998 06 25.34676 19 46 02.51 -10 04 50.6 17.5 T 704
CJ98M040 C1998 06 25.36518 19 45 59.66 -10 05 04.3 704
CJ98M040 C1998 06 25.38359 19 45 56.82 -10 05 18.3 704
CJ98M040 C1998 06 25.40204 19 45 54.07 -10 05 31.7 704
CJ98M040 C1998 06 25.42039 19 45 50.99 -10 05 46.7 704
CJ98M040 C1998 06 26.60160 19 42 49.13 -10 20 22.3 14.7 T 426
CJ98M040 C1998 06 26.61038 19 42 47.75 -10 20 29.2 16.0 T 426
CJ98M040 C1998 06 26.61606 19 42 46.89 -10 20 33.2 14.9 T 426
CJ98M040 C1998 06 26.62300 19 42 45.83 -10 20 38.3 14.8 T 426
CJ98M040 C1998 06 26.89961 19 42 03.12 -10 24 08.3 16.4 T 596
CJ98M040 C1998 06 26.91012 19 42 01.50 -10 24 15.3 596
CJ98M040 C1998 06 26.91956 19 41 59.94 -10 24 23.6 104
CJ98M040 C1998 06 26.92072 19 41 59.80 -10 24 24.6 104
CJ98M040 C1998 06 26.92199 19 41 59.57 -10 24 26.2 104
CJ98M040 C1998 06 26.92338 19 41 59.32 -10 24 27.0 104
CJ98M040 C1998 06 26.92723 19 41 58.78 -10 24 28.4 596
CJ98M040 C1998 06 27.02288 19 41 43.99 -10 25 42.0 17.2 T 468
CJ98M040 C1998 06 27.02634 19 41 43.55 -10 25 41.8 16.5 T 468
CJ98M040 C1998 06 27.22651 19 41 12.43 -10 28 14.2 16.6 T 709
CJ98M040 C1998 06 27.22898 19 41 12.06 -10 28 13.3 16.5 T 709
CJ98M040 C1998 06 27.23436 19 41 11.18 -10 28 18.0 16.5 T 709
CJ98M040 C1998 06 27.23993 19 41 10.24 -10 28 26.0 16.6 T 709
CJ98M040 C1998 06 27.24335 19 41 09.77 -10 28 24.6 16.7 T 709
CJ98M040 C1998 06 27.33895 19 40 54.82 -10 29 35.7 734
CJ98M040 C1998 06 27.34295 19 40 54.22 -10 29 39.3 734
CJ98M040 C1998 06 27.34928 19 40 53.14 -10 29 44.6 734
CJ98M040 C1998 06 27.36581 19 40 50.60 -10 29 56.6 711
CJ98M040 C1998 06 27.36921 19 40 50.06 -10 29 59.1 711
CJ98M040 C1998 06 27.37229 19 40 49.57 -10 30 01.5 711
CJ98M040 C1998 06 27.59352 19 40 15.38 -10 32 43.2 14.7 T 426
CJ98M040 C1998 06 27.60471 19 40 13.59 -10 32 51.7 14.7 T 426
CJ98M040 C1998 06 27.61536 19 40 11.94 -10 32 59.8 14.7 T 426
CJ98M040 C1998 06 27.85245 19 39 35.17 -10 36 01.9 121
CJ98M040 C1998 06 27.85523 19 39 34.68 -10 36 03.6 16.6 T 121
CJ98M040 C1998 06 27.86079 19 39 33.76 -10 36 08.4 16.4 T 121
CJ98M040 FC1998 06 27.89595 19 39 28.33 -10 36 35.9 17.1 T 540
CJ98M040 C1998 06 27.89956 19 39 27.75 -10 36 35.0 540
CJ98M040 C1998 06 27.90309 19 39 27.25 -10 36 38.4 540
CJ98M040 C1998 06 27.91725 19 39 24.93 -10 36 48.9 046
CJ98M040 C1998 06 27.91834 19 39 24.74 -10 36 50.3 046
CJ98M040 C1998 06 27.91991 19 39 24.58 -10 36 50.7 046
CJ98M040 C1998 06 27.92105 19 39 24.37 -10 36 52.2 046
CJ98M040 C1998 06 27.92213 19 39 24.17 -10 36 52.6 046
CJ98M040 C1998 06 27.92681 19 39 23.43 -10 36 56.0 104
CJ98M040 C1998 06 27.92813 19 39 23.25 -10 36 56.6 104
CJ98M040 C1998 06 27.99156 19 39 13.41 -10 37 44.7 16.0 T 504
CJ98M040 C1998 06 28.00160 19 39 11.82 -10 37 52.1 16.3 T 504
CJ98M040 C1998 06 28.00248 19 39 11.74 -10 37 52.7 504
CJ98M040 C1998 06 28.00353 19 39 11.56 -10 37 53.7 16.3 T 504
CJ98M040 C1998 06 28.00633 19 39 11.12 -10 37 56.0 16.1 T 504
CJ98M040 C1998 06 28.00777 19 39 10.84 -10 37 56.8 16.0 T 504
CJ98M040 C1998 06 28.00888 19 39 10.68 -10 37 57.4 16.2 T 504
CJ98M040 C1998 06 28.00987 19 39 10.55 -10 37 58.0 16.1 T 504
CJ98M040 C1998 06 29.98705 19 34 01.19 -11 02 38.1 16.1 T 120
CJ98M040 C1998 06 29.98983 19 34 00.76 -11 02 39.9 16.3 T 120
CJ98M040 C1998 06 29.99157 19 34 00.53 -11 02 40.0 16.2 T 120
CJ98M040 C1998 06 29.99316 19 34 00.30 -11 02 42.5 16.3 T 120
CJ98M040 C1998 06 29.99512 19 34 00.00 -11 02 43.7 16.2 T 120
CJ98M040 C1998 06 29.99690 19 33 59.72 -11 02 44.0 16.1 T 120
CJ98M040 C1998 06 30.55772 19 32 31.63 -11 09 44.7 16.4 T 402
CJ98M040 C1998 06 30.55980 19 32 31.20 -11 09 46.8 402
CJ98M040 C1998 06 30.56189 19 32 30.94 -11 09 47.8 402
CJ98M040 C1998 06 30.56397 19 32 30.64 -11 09 49.7 402
CJ98M040 C1998 06 30.57092 19 32 29.48 -11 09 54.0 402
CJ98M040 C1998 07 02.40428 19 27 40.30 -11 32 46.2 658
CJ98M040 C1998 07 02.40641 19 27 39.95 -11 32 47.9 658
CJ98M040 C1998 07 02.40852 19 27 39.61 -11 32 49.6 658
CJ98M040 C1998 07 02.57403 19 27 13.59 -11 34 52.2 15.5 T 402
CJ98M040 C1998 07 02.57611 19 27 13.30 -11 34 53.4 402
CJ98M040 C1998 07 02.57819 19 27 12.95 -11 34 55.1 402
CJ98M040 C1998 07 02.61741 19 27 06.77 -11 35 24.4 15.6 T 355
CJ98M040 C1998 07 02.62994 19 27 04.78 -11 35 34.1 355
CJ98M040 C1998 07 02.63361 19 27 04.14 -11 35 36.7 355
CJ98M040 C1998 07 02.68490 19 26 55.97 -11 36 14.7 15.0 T 360
CJ98M040 C1998 07 02.68733 19 26 55.60 -11 36 16.7 360
CJ98M040 C1998 07 02.68976 19 26 55.20 -11 36 18.5 360
CJ98M040 C1998 07 03.59582 19 24 32.16 -11 47 33.1 15.2 T 367
CJ98M040 C1998 07 03.59832 19 24 31.76 -11 47 35.3 367
CJ98M040 C1998 07 03.60081 19 24 31.37 -11 47 36.7 367
CJ98M040 C1998 07 03.66123 19 24 21.71 -11 48 22.3 15.8 T 402
CJ98M040 C1998 07 03.66281 19 24 21.46 -11 48 23.6 402
CJ98M040 C1998 07 03.66440 19 24 21.21 -11 48 24.7 402
CJ98M040 C1998 07 03.68472 19 24 17.95 -11 48 39.8 360
CJ98M040 C1998 07 03.68993 19 24 17.11 -11 48 43.5 15.2 T 360
CJ98M040 C1998 07 03.69323 19 24 16.61 -11 48 46.0 360
CJ98M040 C1998 07 05.29463 19 20 03.30 -12 08 31.0 16.0 T 860
CJ98M040 C1998 07 05.29983 19 20 02.40 -12 08 31.7 15.4 T 860
CJ98M040 C1998 07 05.30352 19 20 01.72 -12 08 33.8 15.7 T 860
CJ98M040 C1998 07 05.63818 19 19 09.11 -12 12 47.0 15.8 T 402
CJ98M040 C1998 07 05.64027 19 19 08.79 -12 12 48.6 402
CJ98M040 C1998 07 05.64235 19 19 08.43 -12 12 50.5 402
CJ98M040 C1998 07 14.98281 18 54 54.20 -14 03 49.1 046
CJ98M040 C1998 07 14.98397 18 54 54.03 -14 03 49.3 17.0 N 046
CJ98M040 C1998 07 14.98747 18 54 53.56 -14 03 52.3 046
CJ98M040 C1998 07 14.98824 18 54 53.38 -14 03 52.5 046
CJ98M040 C1998 07 14.98902 18 54 53.24 -14 03 53.1 046
CJ98M040 C1998 07 18.58649 18 45 55.79 -14 43 50.7 16.4 T 402
CJ98M040 C1998 07 18.58753 18 45 55.67 -14 43 51.3 402
CJ98M040 C1998 07 18.58858 18 45 55.52 -14 43 52.1 402
CJ98M040 cC1998 07 19.92917 18 42 40.12 -14 58 15.7 16.0 T 540
CJ98M040 cC1998 07 19.94269 18 42 37.83 -14 58 25.3 540
CJ98M040 C1998 07 22.56139 18 36 24.80 -15 25 44.4 16.7 T 402
CJ98M040 C1998 07 22.56243 18 36 24.62 -15 25 44.6 402
CJ98M040 C1998 07 22.56347 18 36 24.43 -15 25 44.9 402
Observer details:
046 Klet. Observers J. Ticha, M. Tichy, Z. Moravec. Measurer M. Tichy.
0.57-m f/5.2 reflector + CCD.
104 San Marcello Pistoiese. Observers L. Tesi, A. Boattini, M. Tombelli.
Measurers A. Boattini, G. Forti, L. Tesi. 0.40-m f/5 reflector + CCD.
120 Visnjan. Observers K. Korlevic, V. Jelic, R. Radonic. Measurer
K. Korlevic. 0.41-m f/4.3 reflector + CCD.
121 Kharkov University, Chuguevskaya Station. Observer Yu. N. Krugly.
0.70-m reflector + CCD.
355 Hadano. Observer A. Asami. 0.2-m f/4.0 reflector + CCD.
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.
402 Dynic Astronomical Observatory. Observer A. Sugie. 0.60-m f/3.7 reflector
+ CCD.
426 Woomera. Observer F. B. Zoltowski. 0.30-m f/3.3 Schmidt-Cassegrain + CCD.
468 Campo Catino. Observers F. Mallia, G. Masi, M. Di Soria. 0.80-m f/4.0
reflector + CCD.
504 Le Creusot. Observer J. C. Merlin. 0.40-m f/5 reflector + CCD.
540 Linz. Observers E. Meyer, E. Obermair. 0.3-m f/5.2 Schmidt-Cassegrain
+ CCD.
596 Colleverde di Guidonia. Observer V. S. Casulli. 0.40-m f/2.95 reflector
+ CCD.
658 Dominion Astrophysical Observatory. Observer D. D. Balam. 1.82-m
reflector + CCD.
704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, F. Shelly,
M. Bezpalko. Measurers J. Stuart, H. Viggh, R. Sayer. 1.0-m f/2.15
reflector + CCD.
709 Cloudcroft. Observer W. Offutt. 0.6-m Ritchey-Chretien + CCD.
711 McDonald Observatory. Observer P. J. Shelus. 0.76-m reflector + CCD.
734 Farpoint Observatory. Observer G. Bell. Measurer G. Hug. 0.30-m
Schmidt-Cassegrain + CCD.
860 Valinhos. Observer P. R. Holvorcem. 0.20-m f/3.3 reflector + CCD.
Orbital elements:
C/1998 M4 (LINEAR)
T 1997 Dec. 10.4423 TT Marsden
q 2.601995 (2000.0) P Q
Peri. 106.3732 +0.8797832 -0.2055010
Node 92.9140 -0.3816868 -0.8428833
e 1.0 Incl. 154.5821 +0.2833668 -0.4973098
From 97 observations 1998 June 25-July 22.
Ephemeris:
C/1998 M4 (LINEAR)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
1998 07 26 18 28.57 -15 59.9 2.574 3.510 153.1 7.5 17.0
1998 07 31 18 17.88 -16 46.2 2.655 3.543 146.1 9.2 17.1
1998 08 05 18 08.13 -17 28.4 2.747 3.577 139.2 10.7 17.2
1998 08 10 17 59.37 -18 06.8 2.848 3.610 132.4 12.0 17.3
1998 08 15 17 51.59 -18 41.7 2.957 3.644 125.9 13.0 17.5
1998 08 20 17 44.78 -19 13.5 3.073 3.678 119.5 13.9 17.6
1998 08 25 17 38.91 -19 42.6 3.194 3.713 113.3 14.5 17.7
1998 08 30 17 33.92 -20 09.4 3.320 3.747 107.4 14.9 17.8
1998 09 04 17 29.76 -20 34.2 3.448 3.782 101.6 15.1 18.0
1998 09 09 17 26.35 -20 57.4 3.578 3.817 96.0 15.2 18.1
1998 09 14 17 23.64 -21 19.1 3.710 3.853 90.5 15.1 18.2
1998 09 19 17 21.55 -21 39.6 3.841 3.888 85.2 14.9 18.3
1998 09 24 17 20.05 -21 59.1 3.972 3.923 80.0 14.6 18.4
1998 09 29 17 19.06 -22 17.7 4.101 3.959 74.9 14.1 18.5
1998 10 04 17 18.54 -22 35.5 4.228 3.995 69.8 13.6 18.6
1998 10 09 17 18.44 -22 52.7 4.352 4.031 64.9 13.0 18.7
1998 10 14 17 18.70 -23 09.3 4.472 4.067 60.1 12.3 18.8
1998 10 19 17 19.30 -23 25.4 4.589 4.103 55.2 11.5 18.9
1998 10 24 17 20.20 -23 41.0 4.701 4.140 50.5 10.7 19.0
1998 10 29 17 21.35 -23 56.2 4.808 4.176 45.8 9.8 19.1
1998 11 03 17 22.73 -24 11.0 4.909 4.213 41.1 8.9 19.2
1998 11 08 17 24.30 -24 25.5 5.005 4.250 36.5 8.0 19.3
1998 11 13 17 26.03 -24 39.6 5.095 4.286 31.9 7.0 19.4
Brian G. Marsden (C) Copyright 1998 MPC M.P.E.C. 1998-O23
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