MPEC 1999-H17 : 1999 HF1
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M.P.E.C. 1999-H17 Issued 1999 Apr. 21, 22:58 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 ISSN 1523-6714
1999 HF1
Observations:
J99H01F* C1999 04 20.15030 08 59 35.44 +67 27 01.4 15.4 R 699
J99H01F C1999 04 20.16556 08 59 44.02 +67 26 35.8 699
J99H01F C1999 04 20.18082 08 59 52.51 +67 26 09.9 699
J99H01F C1999 04 20.82813 09 05 57.95 +67 07 51.1 15.0 R 046
J99H01F C1999 04 20.83086 09 05 59.40 +67 07 46.4 046
J99H01F C1999 04 20.83209 09 06 00.08 +67 07 44.2 046
J99H01F C1999 04 20.83318 09 06 00.66 +67 07 42.3 046
J99H01F C1999 04 21.02698 09 07 47.61 +67 02 17.7 15.0 R 758
J99H01F C1999 04 21.03101 09 07 49.72 +67 02 10.8 14.9 R 758
J99H01F C1999 04 21.03455 09 07 51.59 +67 02 04.6 15.0 R 758
J99H01F C1999 04 21.03726 09 07 52.97 +67 02 00.1 14.9 R 758
J99H01F C1999 04 21.03808 09 07 51.33 +67 01 36.4 557
J99H01F C1999 04 21.03903 09 07 51.86 +67 01 34.7 557
J99H01F C1999 04 21.03997 09 07 52.37 +67 01 33.1 557
J99H01F C1999 04 21.04090 09 07 52.89 +67 01 31.3 15.1 V 557
J99H01F C1999 04 21.04540 09 07 57.26 +67 01 45.8 14.9 R 758
J99H01F C1999 04 21.05006 09 07 59.71 +67 01 37.9 14.8 R 758
J99H01F C1999 04 21.10119 09 08 27.50 +67 00 08.6 711
J99H01F C1999 04 21.10408 09 08 29.00 +67 00 03.6 711
J99H01F C1999 04 21.10690 09 08 30.46 +66 59 58.8 711
J99H01F C1999 04 21.18042 09 09 09.96 +66 57 46.0 658
J99H01F C1999 04 21.18247 09 09 11.04 +66 57 42.9 658
J99H01F C1999 04 21.18737 09 09 13.56 +66 57 34.3 658
J99H01F C1999 04 21.81189 09 14 41.37 +66 39 23.6 14.7 R 151
J99H01F C1999 04 21.81593 09 14 43.44 +66 39 16.3 14.5 R 151
J99H01F C1999 04 21.81900 09 14 44.94 +66 39 11.1 14.8 R 151
J99H01F C1999 04 21.82073 09 14 45.79 +66 39 07.9 14.9 R 151
J99H01F C1999 04 21.82426 09 14 47.54 +66 39 01.6 14.9 R 151
J99H01F C1999 04 21.82754 09 14 49.20 +66 38 55.5 14.9 R 151
Observer details:
046 Klet. Observers M. Tichy, Z. Moravec. Measurer M. Tichy.
0.57-m f/5.2 reflector + CCD.
151 Eschenberg Observatory, Winterthur. Observer M. Griesser. 0.25-m f/8.0
reflector + CCD.
557 Ondrejov. Observer L. Sarounova. 0.65-m f/3.6 reflector + CCD.
658 Dominion Astrophysical Observatory. Observer D. D. Balam. 1.82-m
reflector + CCD.
699 Lowell Observatory-LONEOS. Observer S. M. Hermann. Measurer
B. W. Koehn. 0.59-m LONEOS Schmidt + CCD.
711 McDonald Observatory. Observers J. G. Ries, J. Africano. 0.76-m
reflector + CCD.
758 BCC Observatory, Cocoa. Observer I. P. Griffin. 0.30-m f/5 Maksutov
+ CCD.
Orbital elements:
1999 HF1
Epoch 1999 Apr. 12.0 TT = JDT 2451280.5 Marsden
M 97.70078 (2000.0) P Q
n 1.33633832 Peri. 252.44627 +0.61676015 -0.76798032
a 0.8163162 Node 156.66923 +0.77863348 +0.62740986
e 0.4648662 Incl. 25.84765 -0.11548516 +0.12869768
P 0.74 H 14.5 G 0.15
From 29 observations 1999 Apr. 20-21.
Ephemeris:
1999 HF1 a,e,i = 0.82, 0.46, 26 q = 0.4368
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 04 12 07 13.51 +69 57.2 0.340 1.010 81.5 79.1 14.9
1999 04 17 08 25.44 +68 46.9 0.379 1.039 84.6 74.1 15.1
1999 04 22 09 16.29 +66 33.8 0.419 1.066 86.6 70.3 15.2
1999 04 27 09 52.00 +64 01.1 0.460 1.090 87.8 67.3 15.4
1999 05 02 10 18.15 +61 26.5 0.500 1.112 88.3 64.9 15.5
1999 05 07 10 38.32 +58 55.8 0.540 1.131 88.4 63.1 15.7
1999 05 12 10 54.69 +56 30.3 0.579 1.148 88.1 61.6 15.8
1999 05 17 11 08.59 +54 09.9 0.617 1.162 87.5 60.4 15.9
1999 05 22 11 20.83 +51 54.0 0.654 1.173 86.7 59.5 16.1
1999 05 27 11 31.93 +49 42.0 0.689 1.183 85.8 58.7 16.2
1999 06 01 11 42.20 +47 33.1 0.722 1.189 84.7 58.1 16.3
1999 06 06 11 51.90 +45 26.5 0.754 1.194 83.5 57.6 16.3
1999 06 11 12 01.19 +43 21.7 0.783 1.196 82.2 57.3 16.4
1999 06 16 12 10.20 +41 18.0 0.811 1.195 80.9 57.1 16.5
1999 06 21 12 19.04 +39 15.3 0.836 1.192 79.5 56.9 16.6
1999 06 26 12 27.73 +37 13.2 0.859 1.187 78.0 56.9 16.6
1999 07 01 12 36.34 +35 11.3 0.879 1.179 76.6 57.0 16.6
1999 07 06 12 44.89 +33 09.2 0.897 1.169 75.0 57.1 16.7
1999 07 11 12 53.41 +31 06.6 0.912 1.157 73.5 57.4 16.7
1999 07 16 13 01.95 +29 03.2 0.924 1.142 71.9 57.8 16.7
1999 07 21 13 10.50 +26 58.6 0.933 1.124 70.3 58.3 16.7
1999 07 26 13 19.07 +24 52.7 0.939 1.104 68.7 59.0 16.7
1999 07 31 13 27.65 +22 44.9 0.942 1.082 67.0 59.8 16.7
1999 08 05 13 36.24 +20 34.7 0.940 1.056 65.3 60.7 16.7
1999 08 10 13 44.82 +18 21.6 0.936 1.029 63.5 61.9 16.6
1999 08 15 13 53.39 +16 04.9 0.927 0.998 61.7 63.4 16.6
1999 08 20 14 01.88 +13 43.9 0.914 0.965 59.9 65.1 16.5
1999 08 25 14 10.22 +11 17.6 0.897 0.929 57.9 67.2 16.5
1999 08 30 14 18.30 +08 44.8 0.876 0.891 55.8 69.7 16.4
1999 09 04 14 25.97 +06 03.9 0.850 0.850 53.6 72.8 16.3
1999 09 09 14 32.97 +03 13.0 0.820 0.806 51.1 76.6 16.3
1999 09 14 14 38.95 +00 09.6 0.785 0.760 48.3 81.2 16.2
1999 09 19 14 43.30 -03 09.0 0.747 0.712 45.1 87.0 16.2
1999 09 24 14 45.11 -06 45.5 0.705 0.663 41.2 94.3 16.2
1999 09 29 14 43.00 -10 41.4 0.662 0.613 36.5 103.5 16.3
Brian G. Marsden (C) Copyright 1999 MPC M.P.E.C. 1999-H17
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