MPEC 1997-U13: 1997 UR
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M.P.E.C. 1997-U13 Issued 1997 Oct. 26, 15:21 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 UR
Revision to MPEC 1997-U09
Observations:
J97U00R tC1997 10 23.60749 03 15 07.09 +22 26 23.8 16.9 V 402
J97U00R tC1997 10 23.60957 03 15 09.26 +22 26 24.9 402
J97U00R tC1997 10 23.61165 03 15 11.86 +22 26 24.7 402
J97U00R C1997 10 23.61466 03 15 15.05 +22 26 24.8 16.8 V 402
J97U00R C1997 10 23.61571 03 15 16.35 +22 26 25.2 402
J97U00R C1997 10 23.61675 03 15 17.60 +22 26 24.3 402
J97U00R C1997 10 24.32814 03 30 15.67 +22 21 31.3 658
J97U00R C1997 10 24.32882 03 30 16.50 +22 21 31.1 658
J97U00R C1997 10 24.32953 03 30 17.37 +22 21 30.8 658
J97U00R C1997 10 24.58623 03 35 49.50 +22 24 54.6 16.6 V 424
J97U00R C1997 10 24.59738 03 36 02.79 +22 24 48.0 16.6 V 424
J97U00R C1997 10 24.60012 03 36 06.11 +22 24 46.9 16.7 V 424
J97U00R C1997 10 24.60289 03 36 09.41 +22 24 44.6 17.1 V 424
J97U00R C1997 10 24.60385 03 36 14.12 +22 19 29.5 16.4 V 402
J97U00R C1997 10 24.60524 03 36 15.80 +22 19 29.5 402
J97U00R C1997 10 24.60573 03 36 12.82 +22 24 43.2 16.2 V 424
J97U00R C1997 10 24.60847 03 36 16.14 +22 24 41.7 16.4 V 424
J97U00R C1997 10 24.60926 03 36 20.73 +22 19 27.5 402
J97U00R C1997 10 24.61400 03 36 22.67 +22 24 37.9 16.9 V 424
J97U00R C1997 10 24.63073 03 36 47.51 +22 19 20.7 360
J97U00R C1997 10 24.63472 03 36 52.34 +22 19 18.5 360
J97U00R C1997 10 24.64028 03 36 58.95 +22 19 15.3 360
J97U00R C1997 10 24.64306 03 37 02.32 +22 19 14.0 360
J97U00R C1997 10 24.67234 03 37 32.58 +22 23 53.0 16.7 V 424
J97U00R C1997 10 24.67512 03 37 35.95 +22 23 50.5 16.8 V 424
J97U00R C1997 10 24.96672 03 44 10.20 +22 13 45.8 620
J97U00R C1997 10 24.96811 03 44 11.90 +22 13 44.8 620
J97U00R C1997 10 24.97054 03 44 14.86 +22 13 42.9 620
J97U00R C1997 10 25.04566 03 45 46.94 +22 12 35.8 620
J97U00R C1997 10 25.04740 03 45 49.06 +22 12 33.9 620
J97U00R VC1997 10 25.25694 03 50 39.96 +22 08 27.0 670
J97U00R VC1997 10 25.26667 03 50 51.99 +22 08 20.0 670
J97U00R VC1997 10 25.29375 03 51 26.06 +22 07 56.9 670
J97U00R C1997 10 25.51765 03 56 28.18 +22 07 40.5 16.3 R 422
J97U00R C1997 10 25.51885 03 56 29.70 +22 07 38.9 16.3 R 422
J97U00R C1997 10 25.52007 03 56 31.22 +22 07 37.9 16.4 R 422
J97U00R C1997 10 25.52353 03 56 35.59 +22 07 35.0 16.6 R 422
J97U00R C1997 10 25.63167 03 58 53.67 +22 00 15.9 16.4 V 385
J97U00R C1997 10 25.63358 03 58 56.05 +22 00 12.5 385
J97U00R C1997 10 25.63503 03 58 57.89 +22 00 11.4 385
J97U00R C1997 10 25.63615 03 58 59.31 +22 00 08.8 385
J97U00R C1997 10 25.64199 03 59 06.50 +22 00 01.8 385
J97U00R C1997 10 25.69726 04 00 14.75 +21 58 38.6 355
J97U00R C1997 10 25.69882 04 00 16.73 +21 58 37.0 355
J97U00R C1997 10 25.70015 04 00 18.28 +21 58 34.0 355
J97U00R C1997 10 25.70159 04 00 20.24 +21 58 32.0 355
J97U00R C1997 10 25.88385 04 04 40.59 +21 52 05.3 587
J97U00R C1997 10 25.88733 04 04 45.17 +21 52 01.0 587
J97U00R C1997 10 25.89080 04 04 49.69 +21 51 56.6 587
J97U00R C1997 10 26.35903 04 15 17.97 +21 38 41.9 670
J97U00R C1997 10 26.37882 04 15 42.76 +21 38 04.7 670
J97U00R C1997 10 26.39063 04 15 57.61 +21 37 40.7 670
J97U00R C1997 10 26.41111 04 16 23.18 +21 36 59.1 670
J97U00R C1997 10 26.42743 04 16 43.60 +21 36 24.0 17.5 V 670
Observer details:
355 Hadano. Observer A. Asami. 0.2-m f/4.0 reflector + CCD.
360 Kuma Kogen. Observer A. Nakamura. 0.60-m f/6.0 Ritchey-Chretien + CCD.
385 Nihondaira. Observer T. Urata. 0.31-m f/4.7 reflector + CCD.
402 Dynic Astronomical Observatory. Observer A. Sugie. 0.60-m f/3.7 reflector
+ CCD.
422 Loomberah. Observer G. J. Garradd. 0.25-m f/4.1 reflector + CCD.
424 Macquarie, near Canberra. Observer J. B. Child. 0.32-m f/4.8 reflector
+ CCD.
587 Sormano. Observers P. Sicoli, A. Testa. 0.5-m reflector + CCD.
620 Observatorio Astronomico de Mallorca. Observers A. Lopez, R. Pacheco.
Measurers A. Lopez, R. Pacheco, S. Sanchez. 0.30-m f/3.3
Schmidt-Cassegrain + CCD.
658 Dominion Astrophysical Observatory. Observer D. D. Balam. 1.82-m
reflector + CCD.
670 Camarillo. Observer J. E. Rogers. 0.25-m Schmidt-Cassegrain + CCD.
Orbital elements:
1997 UR
Epoch 1997 Dec. 18.0 TT = JDT 2450800.5 Williams
M 19.18098 (2000.0) P Q
n 0.55907937 Peri. 200.14884 +0.58390774 -0.81151740
a 1.4593308 Node 214.13594 +0.75013762 +0.54977994
e 0.3121479 Incl. 2.26364 +0.31039540 +0.19794325
P 1.76 H 23.0 G 0.15 U 6
From 83 observations 1997 Oct. 22-26, mean residual 0".64.
Ephemeris:
1997 UR a,e,i = 1.46, 0.31, 2 q = 1.0038
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1997 10 24 03 23.18 +22 26.2 0.031 1.023 156.2 23.1 16.6
1997 10 29 05 14.25 +19 29.2 0.030 1.015 136.3 42.5 17.0
1997 11 03 06 45.93 +13 29.5 0.034 1.009 118.9 59.4 17.8
1997 11 08 07 43.85 +08 17.3 0.043 1.005 108.8 68.9 18.6
1997 11 13 08 19.12 +04 44.0 0.053 1.004 104.2 72.8 19.2
1997 11 18 08 41.61 +02 21.7 0.063 1.005 103.0 73.5 19.6
1997 11 23 08 56.55 +00 44.7 0.074 1.008 103.8 72.1 19.9
1997 11 28 09 06.57 -00 21.7 0.085 1.013 105.9 69.5 20.1
1997 12 03 09 13.05 -01 05.6 0.095 1.021 109.0 66.0 20.3
1997 12 08 09 16.82 -01 31.2 0.105 1.030 112.8 61.8 20.4
1997 12 13 09 18.40 -01 40.8 0.114 1.042 117.2 57.2 20.4
1997 12 18 09 18.05 -01 35.9 0.124 1.055 122.1 52.2 20.5
1997 12 23 09 15.93 -01 16.5 0.133 1.070 127.5 46.8 20.5
1997 12 28 09 12.20 -00 42.8 0.143 1.086 133.3 41.2 20.6
1998 01 02 09 07.12 +00 04.7 0.153 1.104 139.5 35.3 20.6
1998 01 07 09 01.10 +01 04.4 0.164 1.123 145.9 29.4 20.6
1998 01 12 08 54.55 +02 13.7 0.177 1.143 152.3 23.6 20.6
1998 01 17 08 47.88 +03 29.6 0.191 1.164 158.4 18.1 20.7
1998 01 22 08 41.45 +04 48.9 0.208 1.185 163.8 13.4 20.7
1998 01 27 08 35.64 +06 08.4 0.227 1.208 167.6 10.1 20.8
1998 02 01 08 30.77 +07 25.2 0.249 1.230 168.2 9.4 21.1
1998 02 06 08 27.09 +08 36.6 0.274 1.253 165.7 11.2 21.4
1998 02 11 08 24.69 +09 41.2 0.301 1.276 161.6 14.1 21.7
1998 02 16 08 23.56 +10 38.0 0.332 1.300 157.0 17.3 22.1
Gareth V. Williams (C) Copyright 1997 MPC M.P.E.C. 1997-U13
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