MPEC 1997-Y05: 1997 WU22
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M.P.E.C. 1997-Y05 Issued 1997 Dec. 18, 20:38 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
1997 WU22
Revision to MPEC 1997-X04
Observations:
J97W22U 2 1990 12 18.28924 05 05 29.27 +22 20 49.9 17.3 675
J97W22U 2 1990 12 18.30868 05 05 26.93 +22 20 33.6 675
J97W22U 2 1990 12 19.27031 05 03 29.19 +22 08 56.3 675
J97W22U 2 1990 12 19.28976 05 03 26.53 +22 08 42.8 675
J97W22U C1997 12 09.54479 03 53 55.59 +26 36 21.9 17.5 V 402
J97W22U C1997 12 09.54758 03 53 55.30 +26 36 19.7 402
J97W22U C1997 12 09.55036 03 53 54.97 +26 36 17.6 402
Observer details:
402 Dynic Astronomical Observatory. Observer A. Sugie. 0.60-m f/3.7 reflector
+ CCD.
675 Palomar Mountain. Observers E. F. Helin, K. Lawrence. Measurer
K. Lawrence. 0.46-m Schmidt.
Orbital elements:
1997 WU22
Id. K. Lawrence (1990 observations)
Epoch 1997 Dec. 18.0 TT = JDT 2450800.5 Williams
M 216.22540 (2000.0) P Q
n 0.55436569 Peri. 334.10827 -0.55624080 +0.78532130
a 1.4675914 Node 260.93946 -0.70662703 -0.61908670
e 0.4420068 Incl. 15.97502 -0.43734930 +0.00145341
P 1.78 H 15.5 G 0.15 U 6
Residuals in seconds of arc
901218 675 1.0- 1.5+ 971202 658 0.1- 0.0 971205 046 0.4- 0.2+
901218 675 0.7+ 0.7- 971203 658 0.2- 0.1- 971205 046 0.6- 0.3+
901219 675 1.6+ 0.7- 971203 658 0.4- 0.2- 971206 118 0.2+ 0.4+
901219 675 1.4- 0.1- 971203 658 0.3- 0.1+ 971206 118 0.2- 0.5+
971130 566 0.6+ 0.4- 971204 402 0.0 0.3+ 971206 118 0.4- 0.1-
971130 566 0.6+ 0.5- 971204 402 0.0 0.0 971206 118 0.2- 0.0
971130 566 0.6+ 1.2- 971204 402 0.2+ 0.0 971206 118 0.1- 0.1-
971201 587 0.1+ 0.3+ 971205 360 0.0 0.5+ 971206 118 0.0 0.1+
971201 587 0.2+ 0.3+ 971205 360 0.4- 0.1+ 971209 402 0.7+ 0.6-
971201 587 0.3+ 0.5+ 971205 360 0.2- 0.3+ 971209 402 0.8+ 0.5-
971202 658 0.3- 0.1+ 971205 046 0.2- 0.1+ 971209 402 0.5+ 0.3-
971202 658 0.2- 0.1- 971205 046 0.4- 0.1-
Ephemeris:
1997 WU22 a,e,i = 1.47, 0.44, 16 q = 0.8189
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1997 12 18 03 40.35 +24 39.2 1.132 2.054 152.0 13.0 18.1
1997 12 23 03 33.74 +23 31.7 1.157 2.044 145.3 15.9 18.2
1997 12 28 03 28.34 +22 28.0 1.186 2.033 138.9 18.5 18.4
1998 01 02 03 24.18 +21 29.3 1.221 2.022 132.7 21.0 18.5
1998 01 07 03 21.27 +20 36.7 1.260 2.009 126.7 23.1 18.6
1998 01 12 03 19.56 +19 50.4 1.302 1.996 121.1 25.0 18.7
1998 01 17 03 18.97 +19 10.7 1.347 1.983 115.7 26.6 18.8
1998 01 22 03 19.44 +18 37.2 1.393 1.968 110.6 27.9 18.9
1998 01 27 03 20.89 +18 09.7 1.441 1.953 105.7 29.0 19.0
1998 02 01 03 23.24 +17 47.7 1.489 1.937 101.1 30.0 19.1
1998 02 06 03 26.42 +17 30.6 1.537 1.920 96.6 30.7 19.2
1998 02 11 03 30.36 +17 17.9 1.585 1.902 92.4 31.2 19.2
1998 02 16 03 34.99 +17 08.9 1.631 1.884 88.4 31.6 19.3
1998 02 21 03 40.25 +17 03.0 1.677 1.865 84.6 31.9 19.3
1998 02 26 03 46.11 +16 59.8 1.721 1.845 80.9 32.0 19.4
1998 03 03 03 52.53 +16 58.6 1.763 1.824 77.4 32.0 19.4
1998 03 08 03 59.46 +16 59.1 1.803 1.803 74.0 32.0 19.4
1998 03 13 04 06.86 +17 00.6 1.840 1.781 70.8 31.8 19.4
1998 03 18 04 14.72 +17 02.8 1.875 1.757 67.7 31.6 19.4
1998 03 23 04 23.00 +17 05.3 1.907 1.734 64.7 31.3 19.4
1998 03 28 04 31.70 +17 07.6 1.936 1.709 61.8 31.0 19.4
1998 04 02 04 40.80 +17 09.4 1.962 1.684 59.1 30.6 19.4
1998 04 07 04 50.28 +17 10.3 1.985 1.657 56.4 30.2 19.4
1998 04 12 05 00.12 +17 10.0 2.005 1.630 53.9 29.8 19.4
1998 04 17 05 10.33 +17 08.0 2.022 1.603 51.5 29.3 19.3
1998 04 22 05 20.89 +17 04.2 2.035 1.574 49.2 28.9 19.3
1998 04 27 05 31.80 +16 58.2 2.045 1.545 47.0 28.4 19.3
1998 05 02 05 43.06 +16 49.6 2.052 1.515 44.9 28.0 19.2
1998 05 07 05 54.67 +16 38.2 2.056 1.484 42.9 27.5 19.2
1998 05 12 06 06.61 +16 23.6 2.056 1.453 41.0 27.1 19.1
1998 05 17 06 18.91 +16 05.6 2.053 1.421 39.2 26.7 19.0
1998 05 22 06 31.55 +15 43.8 2.046 1.388 37.6 26.4 19.0
1998 05 27 06 44.55 +15 18.1 2.037 1.355 36.0 26.1 18.9
1998 06 01 06 57.92 +14 48.1 2.024 1.322 34.6 25.8 18.8
1998 06 06 07 11.65 +14 13.5 2.009 1.287 33.3 25.6 18.7
1998 06 11 07 25.76 +13 34.1 1.991 1.253 32.1 25.5 18.7
1998 06 16 07 40.27 +12 49.7 1.970 1.218 31.1 25.5 18.6
1998 06 21 07 55.19 +12 00.0 1.946 1.183 30.1 25.6 18.5
1998 06 26 08 10.54 +11 05.0 1.920 1.148 29.4 25.7 18.4
Gareth V. Williams (C) Copyright 1997 MPC M.P.E.C. 1997-Y05
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