MPEC 1998-O02: COMET C/1998 K1 = 1998 HE49 (MUELLER)
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M.P.E.C. 1998-O02 Issued 1998 July 16, 14:37 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 K1 = 1998 HE49 (MUELLER)
Observations:
CJ98K010 C1998 05 28.95663 10 43 33.12 +29 29 00.0 16.4 T 860
CJ98K010 C1998 05 28.96400 10 43 33.52 +29 28 55.1 16.3 T 860
CJ98K010 C1998 05 28.97112 10 43 33.71 +29 28 50.4 16.0 T 860
CJ98K010 C1998 05 31.98079 10 45 09.38 +28 44 34.6 15.9 T 860
CJ98K010 C1998 05 31.98771 10 45 09.46 +28 44 27.5 16.0 T 860
CJ98K010 C1998 05 31.99390 10 45 09.74 +28 44 21.5 15.8 T 860
CJ98K010 C1998 06 09.86475 10 50 33.22 +26 33 03.5 046
CJ98K010 C1998 06 09.86738 10 50 33.40 +26 33 01.0 046
CJ98K010 C1998 06 09.86892 10 50 33.44 +26 32 59.6 046
CJ98K010 C1998 06 15.17639 10 54 13.35 +25 14 11.0 16.5 T 670
CJ98K010 C1998 06 15.18819 10 54 13.71 +25 14 01.2 670
CJ98K010 C1998 06 15.19583 10 54 14.18 +25 13 53.8 670
CJ98K010 C1998 06 17.48976 10 55 54.65 +24 39 49.1 16.1 T 360
CJ98K010 C1998 06 17.49375 10 55 54.81 +24 39 45.5 360
CJ98K010 C1998 06 20.52038 10 58 12.28 +23 54 45.0 16.0 T 402
CJ98K010 C1998 06 20.52212 10 58 12.41 +23 54 43.6 402
CJ98K010 C1998 06 20.52385 10 58 12.44 +23 54 41.6 402
CJ98K010 C1998 06 24.84880 11 01 37.85 +22 50 22.3 104
CJ98K010 C1998 06 24.85017 11 01 37.96 +22 50 21.3 104
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, L. Tesi, M. Tombelli, G. Forti. 0.40-m f/5
reflector + CCD.
360 Kuma Kogen. Observer A. Nakamura. 0.60-m f/6.0 Ritchey-Chretien + CCD.
402 Dynic Astronomical Observatory. Observer A. Sugie. 0.60-m f/3.7 reflector
+ CCD.
670 Camarillo. Observer J. E. Rogers. 0.25-m Schmidt-Cassegrain + CCD.
860 Valinhos. Observer P. R. Holvorcem. 0.20-m f/3.3 reflector + CCD.
Orbital elements:
C/1998 K1 = 1998 HE49 (Mueller)
Epoch 1998 Aug. 15.0 TT = JDT 2451040.5
T 1998 Sept. 1.0331 TT Nakano
q 3.416439 (2000.0) P Q
z +0.016166 Peri. 165.2480 -0.9831894 +0.0044200
+/-0.000066 Node 18.2580 -0.1566666 -0.5338686
e 0.944769 Incl. 35.6355 +0.0937770 -0.8455559
From 145 observations 1998 Apr. 22-June 24, mean residual 0".6.
Ephemeris:
C/1998 K1 (Mueller)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
1998 07 16 11 20.48 +17 36.8 3.979 3.443 51.7 13.4 15.9
1998 07 21 11 25.35 +16 23.1 4.025 3.438 48.5 12.8 15.9
1998 07 26 11 30.36 +15 09.5 4.070 3.433 45.4 12.2 15.9
1998 07 31 11 35.48 +13 56.2 4.112 3.429 42.2 11.5 15.9
1998 08 05 11 40.70 +12 43.1 4.152 3.425 39.1 10.8 15.9
1998 08 10 11 46.02 +11 30.3 4.190 3.422 36.0 10.0 16.0
1998 08 15 11 51.42 +10 17.7 4.226 3.420 32.9 9.3 16.0
The identification of the observations on MPS 1118 with the comet
introduced on IAUC 6908 (see also MPEC 1998-K12) is by S. Nakano, Sumoto,
Japan.
Brian G. Marsden (C) Copyright 1998 MPC M.P.E.C. 1998-O02
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