MPEC 1998-E18: 1998 DV9
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M.P.E.C. 1998-E18 Issued 1998 Mar. 9, 20:00 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
1998 DV9
Revision to MPEC 1998-D15
Observations:
J98D09V C1998 02 26.22390 03 30 49.68 +20 17 25.4 18.6 R 568
J98D09V C1998 02 26.22487 03 30 49.90 +20 17 27.8 18.7 R 568
J98D09V C1998 02 26.34108 03 31 17.76 +20 22 18.2 18.5 R 568
J98D09V C1998 02 26.34206 03 31 17.99 +20 22 20.6 18.6 R 568
J98D09V SC1998 02 27.79704 03 37 22.73 +21 23 49.4 046
J98D09V SC1998 02 27.80885 03 37 25.69 +21 24 19.3 046
J98D09V C1998 03 01.78090 03 45 59.75 +22 48 33.2 587
J98D09V C1998 03 01.78455 03 46 00.66 +22 48 42.7 587
J98D09V C1998 03 01.79028 03 46 02.09 +22 48 56.6 587
J98D09V WC1998 03 01.79812 03 46 04.17 +22 49 14.9 557
J98D09V WC1998 03 01.80044 03 46 04.66 +22 49 20.6 557
J98D09V C1998 03 02.46962 03 49 04.73 +23 18 08.0 19.0 V 360
J98D09V C1998 03 02.47396 03 49 05.82 +23 18 17.9 360
J98D09V C1998 03 02.47778 03 49 06.88 +23 18 28.2 360
J98D09V C1998 03 02.82263 03 50 41.03 +23 33 10.4 18.4 R 587
J98D09V pC1998 03 02.82644 03 50 42.01 +23 33 20.8 587
J98D09V C1998 03 06.15594 04 06 31.74 +25 56 26.8 658
J98D09V C1998 03 06.15852 04 06 32.43 +25 56 33.9 658
Observer details:
046 Klet. Observers J. Ticha, M. Tichy. Measurer M. Tichy.
0.57-m f/5.2 reflector + CCD.
360 Kuma Kogen. Observer A. Nakamura. 0.60-m f/6.0 Ritchey-Chretien + CCD.
557 Ondrejov. Observer P. Pravec. 0.65-m f/3.6 reflector + CCD.
568 Mauna Kea. Observer D. J. Tholen. 2.2-m University of Hawaii
reflector + CCD.
587 Sormano. Observers F. Manca, G. Ventre. 0.5-m reflector + CCD.
658 Dominion Astrophysical Observatory. Observer D. D. Balam. 1.82-m
reflector + CCD.
Orbital elements:
1998 DV9
Epoch 1998 Feb. 16.0 TT = JDT 2450860.5 Williams
M 356.59461 (2000.0) P Q
n 0.42946132 Peri. 0.56641 -0.65790504 -0.74434888
a 1.7398829 Node 130.58041 +0.69036249 -0.65683092
e 0.4323002 Incl. 8.66936 +0.30093287 -0.12049018
P 2.29 H 18.0 G 0.15
From 30 observations 1998 Feb. 23-Mar. 6.
Ephemeris:
1998 DV9 a,e,i = 1.74, 0.43, 9 q = 0.9877
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 03 08 04 15.87 +27 15.5 0.379 0.997 79.7 78.3 18.6
1998 03 13 04 43.44 +30 44.4 0.369 1.007 81.3 77.4 18.6
1998 03 18 05 14.51 +33 57.8 0.363 1.019 83.3 76.0 18.5
1998 03 23 05 49.14 +36 43.8 0.360 1.034 85.7 74.0 18.4
1998 03 28 06 26.89 +38 49.6 0.361 1.051 88.4 71.6 18.4
1998 04 02 07 06.69 +40 05.0 0.366 1.071 91.2 68.9 18.4
1998 04 07 07 46.92 +40 25.1 0.376 1.093 94.0 66.0 18.4
1998 04 12 08 25.80 +39 51.7 0.390 1.117 96.7 63.0 18.4
1998 04 17 09 01.93 +38 32.6 0.409 1.142 99.1 60.2 18.5
1998 04 22 09 34.54 +36 38.7 0.432 1.169 101.3 57.5 18.6
1998 04 27 10 03.47 +34 21.2 0.459 1.197 103.0 55.0 18.7
1998 05 02 10 28.95 +31 49.7 0.491 1.226 104.4 52.8 18.8
1998 05 07 10 51.39 +29 11.8 0.526 1.255 105.4 50.8 19.0
1998 05 12 11 11.26 +26 32.8 0.564 1.286 106.0 49.1 19.1
1998 05 17 11 29.00 +23 56.0 0.606 1.316 106.3 47.5 19.3
1998 05 22 11 45.00 +21 23.6 0.650 1.347 106.2 46.2 19.5
1998 05 27 11 59.62 +18 56.5 0.698 1.378 105.8 45.0 19.6
1998 06 01 12 13.13 +16 35.5 0.749 1.409 105.2 44.0 19.8
1998 06 06 12 25.74 +14 20.8 0.802 1.441 104.4 43.0 20.0
1998 06 11 12 37.63 +12 12.4 0.857 1.472 103.3 42.2 20.1
1998 06 16 12 48.93 +10 10.1 0.915 1.503 102.1 41.4 20.3
1998 06 21 12 59.76 +08 13.7 0.975 1.534 100.7 40.6 20.5
1998 06 26 13 10.22 +06 22.7 1.037 1.564 99.2 39.9 20.6
1998 07 01 13 20.39 +04 36.9 1.102 1.595 97.6 39.2 20.8
1998 07 06 13 30.33 +02 56.1 1.167 1.625 95.9 38.5 20.9
1998 07 11 13 40.09 +01 20.1 1.235 1.654 94.1 37.8 21.1
1998 07 16 13 49.69 -00 11.5 1.304 1.684 92.2 37.1 21.2
1998 07 21 13 59.19 -01 38.9 1.374 1.712 90.2 36.4 21.3
1998 07 26 14 08.61 -03 02.3 1.446 1.741 88.2 35.7 21.5
1998 07 31 14 17.98 -04 21.9 1.519 1.769 86.1 34.9 21.6
1998 08 05 14 27.32 -05 37.8 1.592 1.796 84.0 34.2 21.7
1998 08 10 14 36.64 -06 50.1 1.666 1.823 81.8 33.4 21.8
1998 08 15 14 45.94 -07 59.0 1.741 1.850 79.6 32.6 21.9
Brian G. Marsden (C) Copyright 1998 MPC M.P.E.C. 1998-E18
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