MPEC 1999-D21 : 1999 DJ4
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M.P.E.C. 1999-D21 Issued 1999 Feb. 26, 17:03 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 DJ4
Observations:
J99D04J* C1999 02 24.35637 14 24 34.85 +20 03 37.2 17.6 704
J99D04J C1999 02 24.36669 14 24 39.04 +20 03 15.7 17.4 704
J99D04J C1999 02 24.37701 14 24 43.14 +20 02 53.3 17.8 704
J99D04J C1999 02 24.38733 14 24 47.26 +20 02 32.1 17.6 704
J99D04J C1999 02 24.39768 14 24 51.37 +20 02 09.6 17.8 704
J99D04J C1999 02 25.02891 14 29 15.79 +19 38 31.4 16.5 R 046
J99D04J C1999 02 25.02993 14 29 16.24 +19 38 27.8 046
J99D04J C1999 02 25.03078 14 29 16.61 +19 38 26.1 046
J99D04J C1999 02 25.03163 14 29 16.96 +19 38 24.2 046
J99D04J C1999 02 25.08304 14 29 38.02 +19 36 28.6 16.6 R 118
J99D04J C1999 02 25.08752 14 29 39.85 +19 36 18.3 118
J99D04J C1999 02 25.08963 14 29 40.70 +19 36 13.6 118
J99D04J C1999 02 25.30639 14 31 14.03 +19 28 02.8 15.5 R 758
J99D04J C1999 02 25.30820 14 31 14.80 +19 27 59.2 15.5 R 758
J99D04J C1999 02 25.30993 14 31 15.39 +19 27 55.4 15.4 R 758
J99D04J C1999 02 25.31161 14 31 16.14 +19 27 51.0 15.3 R 758
J99D04J C1999 02 25.31341 14 31 16.97 +19 27 46.4 15.3 R 758
J99D04J C1999 02 25.37108 14 31 41.71 +19 25 26.8 17.2 704
J99D04J C1999 02 25.37242 14 31 42.18 +19 25 23.6 17.3 704
J99D04J C1999 02 25.37382 14 31 42.87 +19 25 21.0 17.0 704
J99D04J C1999 02 25.37521 14 31 43.41 +19 25 17.4 704
J99D04J C1999 02 25.37660 14 31 44.04 +19 25 14.1 17.7 704
J99D04J C1999 02 25.37799 14 31 44.64 +19 25 12.2 704
J99D04J C1999 02 25.37939 14 31 45.14 +19 25 07.7 704
J99D04J C1999 02 25.38078 14 31 45.73 +19 25 03.7 17.4 704
J99D04J C1999 02 25.38217 14 31 46.31 +19 25 02.3 17.4 704
J99D04J C1999 02 25.38356 14 31 46.93 +19 24 58.1 704
J99D04J C1999 02 25.38496 14 31 47.49 +19 24 54.5 17.4 704
J99D04J C1999 02 25.38635 14 31 48.11 +19 24 53.1 704
J99D04J C1999 02 25.38770 14 31 48.53 +19 24 47.5 704
J99D04J C1999 02 25.38909 14 31 49.16 +19 24 42.4 704
J99D04J C1999 02 25.39048 14 31 49.82 +19 24 41.3 704
J99D04J C1999 02 25.39890 14 31 52.06 +19 24 28.2 15.6 R 758
J99D04J C1999 02 25.40066 14 31 52.79 +19 24 24.7 15.7 R 758
J99D04J C1999 02 25.40243 14 31 53.62 +19 24 19.6 15.9 R 758
J99D04J C1999 02 25.40447 14 31 54.41 +19 24 14.9 15.5 R 758
J99D04J C1999 02 25.40623 14 31 55.07 +19 24 11.9 15.6 R 758
J99D04J C1999 02 25.69809 14 34 02.49 +19 12 25.2 17.0 V 900
J99D04J C1999 02 25.71283 14 34 08.70 +19 11 49.6 900
J99D04J C1999 02 25.91801 14 35 38.80 +19 03 12.5 587
J99D04J C1999 02 25.91972 14 35 39.60 +19 03 10.0 587
J99D04J C1999 02 25.92563 14 35 42.14 +19 02 55.6 587
J99D04J C1999 02 25.94873 14 35 51.94 +19 01 59.6 16.2 R 118
J99D04J C1999 02 25.95009 14 35 52.51 +19 01 56.3 118
J99D04J C1999 02 25.95245 14 35 53.55 +19 01 50.3 118
J99D04J C1999 02 25.95741 14 35 55.71 +19 01 38.1 118
J99D04J C1999 02 25.97894 14 36 05.10 +19 00 47.9 108
J99D04J C1999 02 25.98079 14 36 06.18 +19 00 41.1 108
J99D04J C1999 02 25.98322 14 36 06.94 +19 00 38.6 108
J99D04J C1999 02 25.99035 14 36 10.12 +19 00 20.8 16.8 V 108
J99D04J C1999 02 26.34083 14 38 43.53 +18 45 55.9 15.5 R 758
J99D04J C1999 02 26.34443 14 38 45.12 +18 45 46.1 15.8 R 758
J99D04J C1999 02 26.34612 14 38 45.87 +18 45 42.3 15.7 R 758
J99D04J C1999 02 26.34778 14 38 46.62 +18 45 37.7 15.7 R 758
J99D04J C1999 02 26.39049 14 39 04.89 +18 43 48.5 15.5 R 758
J99D04J C1999 02 26.39142 14 39 05.15 +18 43 47.1 15.5 R 758
J99D04J C1999 02 26.39236 14 39 05.36 +18 43 45.1 15.7 R 758
J99D04J C1999 02 26.39330 14 39 05.66 +18 43 42.9 15.7 R 758
J99D04J C1999 02 26.39778 14 39 08.96 +18 43 19.7 16.5 V 713
J99D04J C1999 02 26.41565 14 39 16.59 +18 42 35.4 16.2 V 713
Observer details:
046 Klet. Observers M. Tichy, Z. Moravec. Measurer M. Tichy. 0.57-m f/5.2
reflector + CCD.
108 Montelupo. Observers M. Tombelli, A. Boattini, L. Tesi, S. Bartolini,
G. Forti. Measurers M. Tombelli, A. Boattini, L. Tesi, D. Guidetti,
G. Forti, E. Masotti. 0.30-m f/5.7 Schmidt-Cassegrain + CCD.
118 Modra. Observers L. Kornos, J. Toth. 0.6-m f/5.5 reflector + CCD.
587 Sormano. Observers F. Manca, P. Ghezzi. 0.5-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.
713 Thornton. Observer R. A. Koff. 0.20-m f/10 Schmidt-Cassegrain + CCD.
758 BCC Observatory, Cocoa. Observer I. P. Griffin. 0.30-m f/5 Maksutov
+ CCD.
900 Moriyama. Observer Y. Ikari. 0.25-m f/6.3 reflector + CCD.
Orbital elements:
1999 DJ4 PHA 0.030D
Epoch 1999 Feb. 11.0 TT = JDT 2451220.5 Williams
M 335.12309 (2000.0) P Q
n 0.40406931 Peri. 197.49123 -0.79525134 +0.60389610
a 1.8120304 Node 19.95043 -0.53573502 -0.65848094
e 0.4728430 Incl. 9.05676 -0.28383674 -0.44912399
P 2.44 H 17.7 G 0.15
From 53 observations 1999 Feb. 24-26.
Ephemeris:
1999 DJ4 a,e,i = 1.81, 0.47, 9 q = 0.9552
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 02 21 14 02.74 +21 48.9 0.222 1.130 124.7 46.0 16.4
1999 02 26 14 36.20 +19 00.4 0.193 1.101 120.8 50.5 16.2
1999 03 03 15 15.92 +14 47.9 0.169 1.074 115.3 56.5 16.0
1999 03 08 16 02.03 +08 54.7 0.152 1.049 108.1 64.0 16.0
1999 03 13 16 53.09 +01 32.5 0.143 1.027 99.4 72.7 16.1
1999 03 18 17 45.82 -06 20.5 0.143 1.007 90.6 81.2 16.3
1999 03 23 18 36.25 -13 26.2 0.152 0.990 83.1 88.1 16.7
1999 03 28 19 21.47 -18 57.2 0.168 0.976 77.7 92.7 17.1
1999 04 02 20 00.43 -22 50.0 0.189 0.965 74.3 94.8 17.4
1999 04 07 20 33.46 -25 23.7 0.213 0.959 72.5 95.2 17.7
1999 04 12 21 01.42 -27 00.3 0.240 0.955 71.9 94.3 17.9
1999 04 17 21 25.28 -27 57.2 0.267 0.956 72.1 92.5 18.0
1999 04 22 21 45.86 -28 26.8 0.294 0.961 72.9 90.1 18.1
1999 04 27 22 03.84 -28 37.7 0.320 0.969 74.1 87.4 18.2
1999 05 02 22 19.70 -28 36.0 0.346 0.981 75.6 84.4 18.3
1999 05 07 22 33.81 -28 26.2 0.370 0.996 77.4 81.4 18.4
1999 05 12 22 46.37 -28 11.9 0.392 1.014 79.4 78.3 18.4
1999 05 17 22 57.52 -27 55.9 0.412 1.035 81.6 75.1 18.5
1999 05 22 23 07.33 -27 40.3 0.431 1.059 84.1 72.0 18.5
1999 05 27 23 15.88 -27 26.8 0.447 1.084 86.8 68.9 18.5
1999 06 01 23 23.20 -27 16.7 0.461 1.112 89.7 65.8 18.6
1999 06 06 23 29.26 -27 11.2 0.472 1.141 92.9 62.7 18.6
1999 06 11 23 34.01 -27 11.5 0.482 1.171 96.4 59.5 18.6
1999 06 16 23 37.38 -27 18.1 0.490 1.203 100.1 56.2 18.6
1999 06 21 23 39.29 -27 31.3 0.496 1.235 104.2 52.9 18.6
1999 06 26 23 39.67 -27 51.0 0.501 1.268 108.6 49.4 18.6
1999 07 01 23 38.44 -28 16.9 0.505 1.302 113.3 45.8 18.5
1999 07 06 23 35.52 -28 48.1 0.510 1.336 118.3 42.1 18.5
1999 07 11 23 30.86 -29 23.2 0.515 1.370 123.6 38.2 18.5
1999 07 16 23 24.45 -30 00.3 0.520 1.404 129.1 34.2 18.4
1999 07 21 23 16.40 -30 36.5 0.528 1.439 134.9 30.0 18.4
1999 07 26 23 06.90 -31 08.9 0.539 1.473 140.7 25.9 18.4
1999 07 31 22 56.26 -31 34.6 0.552 1.507 146.5 21.9 18.4
1999 08 05 22 44.87 -31 51.4 0.570 1.541 151.8 18.1 18.4
1999 08 10 22 33.19 -31 57.3 0.592 1.574 156.4 14.9 18.4
1999 08 15 22 21.69 -31 51.6 0.619 1.607 159.6 12.7 18.4
1999 08 20 22 10.87 -31 34.5 0.651 1.640 160.7 11.7 18.6
1999 08 25 22 01.07 -31 07.2 0.688 1.673 159.7 12.1 18.7
1999 08 30 21 52.54 -30 31.5 0.730 1.705 156.8 13.5 19.0
1999 09 04 21 45.42 -29 49.2 0.776 1.736 152.9 15.3 19.2
1999 09 09 21 39.73 -29 02.1 0.828 1.768 148.6 17.3 19.4
1999 09 14 21 35.47 -28 11.7 0.884 1.798 144.0 19.2 19.7
1999 09 19 21 32.57 -27 19.2 0.944 1.829 139.5 20.9 19.9
1999 09 24 21 30.90 -26 25.6 1.008 1.858 134.9 22.5 20.1
1999 09 29 21 30.36 -25 31.5 1.076 1.887 130.5 23.8 20.4
1999 10 04 21 30.81 -24 37.3 1.146 1.916 126.2 24.9 20.6
1999 10 09 21 32.14 -23 43.2 1.220 1.944 122.0 25.8 20.8
1999 10 14 21 34.26 -22 49.4 1.296 1.972 118.0 26.5 20.9
1999 10 19 21 37.06 -21 55.9 1.374 1.999 114.0 27.1 21.1
1999 10 24 21 40.46 -21 02.6 1.454 2.025 110.1 27.5 21.3
1999 10 29 21 44.38 -20 09.6 1.536 2.051 106.4 27.7 21.4
1999 11 03 21 48.74 -19 16.8 1.619 2.076 102.7 27.8 21.6
1999 11 08 21 53.50 -18 24.0 1.703 2.101 99.1 27.8 21.7
1999 11 13 21 58.60 -17 31.2 1.789 2.125 95.5 27.6 21.8
1999 11 18 22 04.01 -16 38.4 1.874 2.149 92.0 27.4 21.9
Gareth V. Williams (C) Copyright 1999 MPC M.P.E.C. 1999-D21
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