MPEC 1998-H11: 1998 HK1
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M.P.E.C. 1998-H11 Issued 1998 Apr. 21, 13:42 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 HK1
Observations:
J98H01K* C1998 04 18.26262 12 52 57.12 -11 11 15.3 18.5 704
J98H01K C1998 04 18.28349 12 52 57.68 -11 10 45.2 19.1 704
J98H01K C1998 04 18.30426 12 52 58.28 -11 10 16.1 19.2 704
J98H01K C1998 04 18.32496 12 52 58.80 -11 09 45.9 19.2 704
J98H01K C1998 04 18.34566 12 52 59.34 -11 09 16.2 19.2 704
J98H01K C1998 04 19.00328 12 53 24.87 -10 53 31.1 557
J98H01K C1998 04 19.00793 12 53 24.95 -10 53 23.4 557
J98H01K C1998 04 19.01110 12 53 25.03 -10 53 19.2 557
J98H01K C1998 04 19.23260 12 53 34.75 -10 47 51.9 18.2 704
J98H01K C1998 04 19.25452 12 53 35.41 -10 47 20.1 18.3 704
J98H01K C1998 04 19.27613 12 53 35.99 -10 46 48.7 18.1 704
J98H01K C1998 04 19.29771 12 53 36.63 -10 46 16.4 18.4 704
J98H01K C1998 04 19.31908 12 53 37.32 -10 45 43.8 18.5 704
J98H01K C1998 04 19.53169 12 53 46.93 -10 40 34.3 18.1 V 402
J98H01K C1998 04 19.53377 12 53 47.00 -10 40 32.2 402
J98H01K C1998 04 19.53586 12 53 47.06 -10 40 28.1 402
J98H01K C1998 04 19.91455 12 54 02.02 -10 31 15.2 18.1 V 046
J98H01K WC1998 04 19.91611 12 54 02.18 -10 31 13.5 557
J98H01K C1998 04 19.91826 12 54 02.17 -10 31 09.7 046
J98H01K C1998 04 19.91844 12 54 02.21 -10 31 09.4 557
J98H01K C1998 04 19.92012 12 54 02.27 -10 31 07.7 046
J98H01K WC1998 04 19.92076 12 54 02.18 -10 31 05.7 557
J98H01K C1998 04 19.92309 12 54 02.32 -10 31 04.8 557
J98H01K C1998 04 20.07634 12 54 08.84 -10 26 46.2 18.1 R 860
J98H01K C1998 04 20.08130 12 54 08.97 -10 26 37.6 17.8 R 860
J98H01K C1998 04 20.08533 12 54 09.11 -10 26 32.5 18.0 R 860
J98H01K C1998 04 20.15376 12 54 12.88 -10 25 18.1 18.2 704
J98H01K C1998 04 20.17403 12 54 13.50 -10 24 46.9 18.0 704
J98H01K C1998 04 20.19420 12 54 14.14 -10 24 17.8 18.4 704
J98H01K C1998 04 20.21509 12 54 14.80 -10 23 47.4 18.5 704
J98H01K C1998 04 20.23516 12 54 15.13 -10 23 19.1 18.7 704
J98H01K C1998 04 20.24087 12 54 15.65 -10 23 07.9 17.9 704
J98H01K C1998 04 20.26094 12 54 16.29 -10 22 37.2 18.5 704
J98H01K C1998 04 20.28108 12 54 16.93 -10 22 09.3 18.4 704
J98H01K C1998 04 20.30117 12 54 17.57 -10 21 38.7 18.2 704
J98H01K C1998 04 20.32123 12 54 17.87 -10 21 10.2 18.4 704
J98H01K C1998 04 20.53402 12 54 28.32 -10 15 53.1 18.1 V 402
J98H01K C1998 04 20.53610 12 54 28.37 -10 15 49.5 402
J98H01K C1998 04 20.53818 12 54 28.47 -10 15 47.5 402
J98H01K C1998 04 20.81875 12 54 40.95 -10 08 50.1 18.5 V 104
J98H01K C1998 04 20.82222 12 54 41.09 -10 08 44.7 104
J98H01K C1998 04 20.82604 12 54 41.23 -10 08 39.5 104
J98H01K C1998 04 20.90122 12 54 43.76 -10 06 49.0 17.9 V 046
J98H01K C1998 04 20.90370 12 54 43.82 -10 06 45.5 046
J98H01K C1998 04 20.90556 12 54 43.90 -10 06 42.8 046
J98H01K C1998 04 20.95389 12 54 45.55 -10 05 31.0 18.2 V 557
J98H01K C1998 04 20.95587 12 54 45.68 -10 05 27.3 557
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. Measurers
A. Boattini, G. Forti, L. Tesi. 0.40-m f/5 reflector + CCD.
402 Dynic Astronomical Observatory. Observer A. Sugie. 0.60-m f/3.7 reflector
+ CCD.
557 Ondrejov. Observers P. Pravec, L. Sarounova. 0.65-m f/3.6 reflector
+ CCD.
704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, F. Shelly,
M. Bezpalko. Measurers J. Stuart, H. Viggh. 1.0-m f/2.15 reflector + CCD.
860 Valinhos. Observer P. R. Holvorcem. 0.20-m f/3.3 reflector + CCD.
Orbital elements:
1998 HK1
Epoch 1998 Apr. 17.0 TT = JDT 2450920.5 Williams
M 347.37888 (2000.0) P Q
n 0.30831125 Peri. 24.31763 -0.52975557 +0.84462426
a 2.1700836 Node 213.84311 -0.79911912 -0.52757803
e 0.4296084 Incl. 7.97406 -0.28419654 -0.09094662
P 3.20 H 19.5 G 0.15
From 47 observations 1998 Apr. 18-20.
Ephemeris:
1998 HK1 a,e,i = 2.17, 0.43, 8 q = 1.2378
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 04 17 12 52.19 -11 40.8 0.305 1.304 168.3 9.0 18.1
1998 04 22 12 55.54 -09 38.8 0.293 1.289 164.4 12.1 18.1
1998 04 27 12 59.92 -07 29.3 0.283 1.276 160.1 15.6 18.1
1998 05 02 13 05.50 -05 17.6 0.277 1.265 155.6 19.2 18.2
1998 05 07 13 12.40 -03 09.2 0.273 1.256 151.3 22.7 18.3
1998 05 12 13 20.60 -01 09.2 0.273 1.248 147.3 25.9 18.3
1998 05 17 13 30.04 +00 38.1 0.274 1.243 143.6 28.9 18.4
1998 05 22 13 40.60 +02 09.3 0.278 1.239 140.3 31.5 18.5
1998 05 27 13 52.15 +03 21.8 0.285 1.238 137.3 33.7 18.6
1998 06 01 14 04.53 +04 14.5 0.293 1.238 134.8 35.5 18.8
1998 06 06 14 17.56 +04 47.4 0.304 1.241 132.7 36.9 18.9
1998 06 11 14 31.04 +05 01.3 0.317 1.246 130.9 38.0 19.0
1998 06 16 14 44.78 +04 57.8 0.332 1.253 129.4 38.8 19.1
1998 06 21 14 58.63 +04 38.7 0.348 1.261 128.1 39.3 19.3
1998 06 26 15 12.49 +04 06.0 0.367 1.272 127.0 39.7 19.4
1998 07 01 15 26.30 +03 22.1 0.389 1.284 126.0 39.8 19.6
1998 07 06 15 39.99 +02 29.4 0.412 1.298 125.2 39.8 19.7
1998 07 11 15 53.51 +01 30.1 0.438 1.314 124.3 39.7 19.9
1998 07 16 16 06.81 +00 26.3 0.466 1.331 123.5 39.6 20.0
1998 07 21 16 19.90 -00 40.1 0.496 1.350 122.6 39.4 20.2
1998 07 26 16 32.80 -01 47.8 0.529 1.369 121.6 39.2 20.4
1998 07 31 16 45.52 -02 55.2 0.565 1.390 120.6 38.9 20.5
1998 08 05 16 58.07 -04 01.0 0.603 1.412 119.5 38.7 20.7
1998 08 10 17 10.45 -05 04.3 0.644 1.435 118.3 38.5 20.9
1998 08 15 17 22.67 -06 04.4 0.687 1.459 116.9 38.2 21.0
1998 08 20 17 34.73 -07 00.6 0.733 1.483 115.5 38.0 21.2
1998 08 25 17 46.68 -07 52.6 0.782 1.509 114.0 37.8 21.4
1998 08 30 17 58.52 -08 40.0 0.833 1.534 112.4 37.5 21.5
1998 09 04 18 10.24 -09 22.6 0.887 1.560 110.6 37.2 21.7
1998 09 09 18 21.85 -10 00.1 0.944 1.587 108.8 36.9 21.9
1998 09 14 18 33.35 -10 32.7 1.002 1.614 107.0 36.6 22.0
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-H11
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