MPEC 1998-N21 : 1994 CK1 = 1998 MY5
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M.P.E.C. 1998-N21 Issued 1998 July 15, 15:39 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
1994 CK1 = 1998 MY5
Observations:
J98M05Y C1998 06 25.91462 13 39 28.97 -27 12 53.2 17.9 R 860
J98M05Y C1998 06 25.91974 13 39 27.70 -27 12 45.1 17.3 R 860
J98M05Y C1998 06 25.92402 13 39 26.64 -27 12 37.3 17.5 R 860
J98M05Y C1998 06 26.45259 13 37 23.10 -26 59 46.1 17.4 R 422
J98M05Y C1998 06 26.45384 13 37 22.80 -26 59 44.5 17.0 R 422
J98M05Y tC1998 06 26.45450 13 37 22.65 -26 59 43.3 17.2 R 422
J98M05Y C1998 06 27.84575 13 32 01.86 -26 25 37.5 16.9 V 104
J98M05Y C1998 06 27.84815 13 32 01.25 -26 25 34.7 104
J98M05Y C1998 06 27.84977 13 32 00.80 -26 25 31.5 104
J98M05Y C1998 06 27.85134 13 32 00.50 -26 25 28.7 104
J98M05Y C1998 06 27.86528 13 31 56.91 -26 25 06.0 104
J98M05Y C1998 06 29.38623 13 26 10.74 -25 45 30.9 15.8 R 426
J98M05Y C1998 06 29.39023 13 26 09.78 -25 45 25.0 15.9 R 426
J98M05Y C1998 06 29.39356 13 26 08.96 -25 45 19.4 16.0 R 426
J98M05Y C1998 06 29.39756 13 26 08.02 -25 45 13.4 16.0 R 426
J98M05Y C1998 07 02.41483 13 14 46.87 -24 23 19.4 17.4 R 422
J98M05Y C1998 07 02.41652 13 14 46.45 -24 23 16.5 17.5 R 422
J98M05Y C1998 07 02.41707 13 14 46.34 -24 23 16.0 17.2 R 422
J98M05Y C1998 07 02.41761 13 14 46.21 -24 23 14.4 17.3 R 422
J98M05Y C1998 07 02.43299 13 14 42.72 -24 22 46.5 16.9 V 429
J98M05Y C1998 07 02.44410 13 14 40.08 -24 22 27.8 16.9 V 429
J98M05Y C1998 07 02.45799 13 14 36.90 -24 22 03.9 16.7 V 429
J98M05Y C1998 07 02.98704 13 12 38.76 -24 07 15.0 17.3 R 860
J98M05Y C1998 07 03.01193 13 12 32.87 -24 06 30.8 860
J98M05Y C1998 07 04.97586 13 05 16.07 -23 09 32.3 17.3 R 860
J98M05Y C1998 07 04.98120 13 05 14.86 -23 09 24.0 16.9 R 860
J98M05Y C1998 07 04.99549 13 05 11.56 -23 08 58.0 17.3 R 860
J98M05Y C1998 07 10.40263 12 45 10.10 -20 18 49.4 16.6 R 426
J98M05Y C1998 07 10.40734 12 45 09.03 -20 18 39.9 16.7 R 426
J98M05Y C1998 07 10.41215 12 45 07.90 -20 18 30.5 16.8 R 426
J98M05Y C1998 07 10.41756 12 45 06.65 -20 18 19.3 17.0 R 426
J98M05Y C1998 07 11.42328 12 41 20.02 -19 44 14.4 17.7 R 422
J98M05Y C1998 07 11.42527 12 41 19.56 -19 44 10.8 17.7 R 422
J98M05Y C1998 07 11.42591 12 41 19.41 -19 44 08.9 17.6 R 422
Observer details:
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.
422 Loomberah. Observer G. J. Garradd. 0.25-m f/4.1 reflector + CCD.
426 Woomera. Observer F. B. Zoltowski. 0.30-m f/3.3 Schmidt-Cassegrain + CCD.
429 Hawker. Observer J. Child. 0.32-m f/4.8 reflector + CCD.
860 Valinhos. Observer P. R. Holvorcem. 0.20-m f/3.3 reflector + CCD.
Orbital elements:
1994 CK1 = 1998 MY5
Epoch 1998 July 6.0 TT = JDT 2451000.5 (M-P) Rogers
M 338.68377 (2000.0) P Q
n 0.37616526 Peri. 26.92494 +0.99648402 +0.07288267
a 1.9005688 Node 328.81090 -0.08372623 +0.88440974
e 0.6329278 Incl. 4.57695 +0.00308444 +0.46098540
P 2.62 H 17.0 G 0.15 U 4
Residuals in seconds of arc
940210 691 0.3+ 0.2- 980625 426 0.5- 0.2- 980629 426 0.3- 0.2+
940210 691 0.2- 0.5- 980625 426 0.4- 0.1- 980629 426 0.1- 0.1-
940210 691 0.6- 0.3- 980625 426 0.5- 0.1- 980702 422 0.1- 0.1-
940211 691 0.2- 0.4+ 980625 860 0.2+ 0.4- 980702 422 0.4- 0.1-
940211 691 0.7+ 0.1- 980625 860 0.1- 0.3+ 980702 422 0.1- 0.5-
940211 691 0.2- 0.1- 980625 860 0.3- 2.0+ 980702 422 0.2- 0.2+
940212 691 0.1- 0.6- 980626 711 0.2- 0.1- 980702 429 0.1+ 0.0
940212 691 0.0 0.1- 980626 711 (2.3+ 1.3-) 980702 429 0.6- 0.3-
940212 691 0.1- 0.3+ 980626 711 (4.5- 0.4+) 980702 429 0.1+ 0.2-
940216 691 0.0 0.4+ 980626 426 0.6- 0.1- 980702 860 1.6+ 1.2-
940216 691 0.1- 0.2+ 980626 426 0.1- 0.4- 980703 860 0.4+ 0.4-
940216 691 0.2- 0.0 980626 426 0.5- 0.0 980704 860 0.7+ 0.7+
940219 691 0.3- 0.3- 980626 426 0.5- 0.1+ 980704 860 1.1+ 0.7-
940219 691 0.4+ 0.1- 980626 422 0.2- 0.3+ 980704 860 1.3+ 0.7-
940219 691 0.2- 0.6+ 980626 422 0.1- 0.0 980710 426 1.3- 0.0
980624 566 0.6+ 0.2+ 980626 422 0.0 0.2+ 980710 426 0.8- 0.0
980624 566 0.5+ 0.5+ 980627 104 0.9+ 0.5+ 980710 426 0.8- 0.4-
980624 566 0.1- 0.4+ 980627 104 0.4+ 0.4- 980710 426 0.5- 0.1-
980625 566 0.1+ 0.4- 980627 104 0.5- 0.3+ 980711 422 0.5- 0.4+
980625 566 0.7- 0.6- 980627 104 0.5+ 0.7+ 980711 422 0.4- 0.2-
980625 566 0.3- 0.4- 980627 104 (3.2- 1.9+) 980711 422 0.4- 0.4+
980625 426 0.6- 0.1- 980629 426 0.1+ 0.1+
980625 426 0.5- 0.1- 980629 426 0.0 0.2-
Ephemeris:
1994 CK1 a,e,i = 1.90, 0.63, 5 q = 0.6976
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 07 11 12 42.95 -19 58.8 0.284 1.052 89.3 75.1 17.0
1998 07 12 12 39.18 -19 24.5 0.281 1.042 87.3 77.0 17.0
1998 07 13 12 35.39 -18 49.3 0.278 1.032 85.3 79.1 17.1
1998 07 14 12 31.56 -18 13.2 0.276 1.022 83.3 81.1 17.1
1998 07 15 12 27.68 -17 36.0 0.273 1.012 81.3 83.2 17.1
1998 07 16 12 23.75 -16 57.9 0.270 1.002 79.3 85.4 17.2
1998 07 17 12 19.76 -16 18.6 0.268 0.992 77.2 87.6 17.2
1998 07 18 12 15.70 -15 38.1 0.265 0.982 75.1 89.8 17.2
1998 07 19 12 11.57 -14 56.4 0.263 0.972 72.9 92.1 17.3
1998 07 20 12 07.36 -14 13.3 0.260 0.962 70.8 94.4 17.4
1998 07 21 12 03.06 -13 28.9 0.258 0.953 68.6 96.8 17.4
1998 07 22 11 58.66 -12 42.9 0.255 0.943 66.3 99.3 17.5
1998 07 23 11 54.15 -11 55.4 0.253 0.933 64.1 101.8 17.6
1998 07 24 11 49.54 -11 06.3 0.251 0.924 61.7 104.4 17.7
1998 07 25 11 44.80 -10 15.5 0.249 0.914 59.4 107.1 17.8
1998 07 26 11 39.94 -09 23.0 0.247 0.905 57.0 109.8 17.9
1998 07 27 11 34.95 -08 28.7 0.245 0.896 54.5 112.6 18.0
1998 07 28 11 29.82 -07 32.5 0.243 0.887 52.0 115.5 18.2
1998 07 29 11 24.56 -06 34.6 0.242 0.878 49.5 118.5 18.4
1998 07 30 11 19.16 -05 34.9 0.241 0.869 46.9 121.5 18.6
1998 07 31 11 13.62 -04 33.4 0.239 0.860 44.2 124.6 18.8
1998 08 01 11 07.94 -03 30.3 0.239 0.851 41.5 127.8 19.0
1998 08 02 11 02.14 -02 25.7 0.238 0.843 38.8 131.0 19.3
1998 08 03 10 56.21 -01 19.6 0.238 0.834 36.0 134.4 19.7
1998 08 04 10 50.17 -00 12.3 0.238 0.826 33.2 137.7 20.0
1998 08 05 10 44.03 +00 55.9 0.238 0.818 30.4 141.2 20.5
This identification of the objects introduced on MPEC 1994-C05 (see also
MPEC 1994-D04) and MPEC 1998-M23 was made by J. E. Rogers, Camarillo, CA.
Brian G. Marsden (C) Copyright 1998 MPC M.P.E.C. 1998-N21
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