MPEC 1998-G07 : 1993 UB
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M.P.E.C. 1998-G07 Issued 1998 Apr. 4, 14:16 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
1993 UB
Revision to MPEC 1993-W04
Observations:
J93U00B C1998 03 08.42122 13 44 34.87 +04 19 41.2 696
J93U00B C1998 03 08.42509 13 44 34.65 +04 19 41.4 696
J93U00B C1998 03 08.42897 13 44 34.38 +04 19 41.7 20.6 R 696
J93U00B C1998 04 01.30593 13 16 39.69 +05 07 01.5 693
J93U00B C1998 04 01.30773 13 16 39.57 +05 07 01.3 693
J93U00B C1998 04 01.30932 13 16 39.39 +05 07 01.3 693
Observer details:
693 Catalina Station, Tucson. Observers J. W. Brownlee, C. W. Hergenrother,
S. M. Larson. Measurer C. W. Hergenrother. 1.5-m reflector + CCD.
696 Whipple Observatory, Mt. Hopkins. Observer C. W. Hergenrother. 1.2-m
reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
980308 696 58.9+ 74.6- 980401 693 68.4+ 76.2- MPC 25651 -0.091 day
Orbital elements:
1993 UB
Epoch 1997 Dec. 18.0 TT = JDT 2450800.5 Marsden
M 65.39724 (2000.0) P Q
n 0.28660293 Peri. 20.96133 +0.62812435 -0.74636996
a 2.2783248 Node 31.39887 +0.64024038 +0.33507537
e 0.4591342 Incl. 24.97574 +0.44221268 +0.57502729
P 3.44 H 17.0 G 0.15 U 2
Residuals in seconds of arc
931023 413 (7.1+ 9.5-) 931106 413 0.6+ 1.0+ 931123 658 0.4+ 1.3+
931023 413 (1.7+ 4.6-) 931108 786 (2.3- 0.4+) 931123 658 0.6+ 0.5+
931025 413 1.2+ 0.2- 931108 786 (2.2- 0.2+) 931212 801 1.2+ 1.1-
931025 413 1.1+ 0.1- 931108 786 (2.4- 0.2+) 931217 801 0.6+ 1.2+
931025 413 1.0+ 0.3- 931108 658 0.0 0.6- 940109 104 (3.2- 0.5-)
931025 413 1.0- 0.6+ 931108 658 0.2+ 0.8- 940109 104 0.1+ 0.5+
931025 413 0.3- 1.1+ 931109 786 0.4+ 0.0 940109 104 0.1- 0.4+
931026 413 0.5- 0.3- 931109 786 0.6+ 0.1- 940109 104 0.4+ 0.4+
931026 413 0.6- 0.4- 931109 786 0.6+ 0.2- 940205 658 0.0 0.4+
931026 413 0.4- 0.4- 931109 675 (0.8- 3.8-) 940205 658 0.3- 1.1+
931026 413 0.5- 0.4- 931109 675 (1.5+ 3.5-) 940205 658 0.2- 0.5+
931026 413 0.6- 0.6- 931110 675 0.5- 2.1- 940205 658 1.7- 0.3+
931026 413 1.1- 0.1+ 931110 675 1.2+ 1.4- 940208 658 0.2- 0.8+
931027 413 0.9- 0.5+ 931111 801 0.2- 0.4+ 940208 658 0.8- 0.0
931027 413 0.8- 0.5+ 931111 801 0.1+ 0.2+ 940208 658 0.3- 0.5+
931027 413 0.6- 0.2+ 931113 801 0.3- 0.0 940305 658 0.7+ 0.3+
931027 413 0.7- 0.2+ 931113 801 0.1- 0.0 940305 658 0.3+ 0.4-
931027 413 0.6- 0.3+ 931114 711 0.4- 0.2+ 940305 658 0.6- 0.0
931027 413 0.7- 0.2+ 931119 670 0.6+ 0.0 940307 658 0.2- 0.0
931027 587 0.5- 0.1- 931119 670 0.5+ 0.9+ 940307 658 0.4- 0.2-
931027 587 0.7- 0.6+ 931119 670 0.7+ 0.3+ 940307 658 0.2- 0.3-
931027 587 0.4- 1.4+ 931119 557 0.6+ 0.2- 980308 696 0.1+ 0.9+
931028 108 1.3- 0.8+ 931119 557 0.4+ 0.1- 980308 696 0.2+ 0.6+
931028 108 0.1+ 1.9- 931119 557 0.5+ 0.2- 980308 696 0.5- 0.3+
931028 108 0.2+ 0.2- 931119 557 0.7+ 0.0 980401 693 1.7+ 1.1+
931028 108 0.1- 1.6+ 931120 413 0.8+ 0.2- 980401 693 2.1+ 0.8+
931028 108 2.0+ 0.3- 931120 413 0.9+ 0.3- 980401 693 1.3+ 0.7+
931028 108 0.8- 0.7- 931120 413 0.5+ 0.4-
931028 108 2.1- 1.2+ 931123 658 0.6+ 0.5+
Ephemeris:
1993 UB a,e,i = 2.28, 0.46, 25 q = 1.2323
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 03 28 13 22.26 +05 00.9 1.787 2.760 164.0 5.7 20.9
1998 04 02 13 15.75 +05 07.9 1.795 2.779 167.4 4.5 20.9
1998 04 07 13 09.21 +05 12.2 1.811 2.798 168.0 4.3 20.9
1998 04 12 13 02.78 +05 13.4 1.834 2.816 165.5 5.1 21.0
1998 04 17 12 56.62 +05 11.3 1.865 2.834 161.2 6.6 21.1
1998 04 22 12 50.82 +05 05.7 1.904 2.852 156.0 8.2 21.2
1998 04 27 12 45.52 +04 56.6 1.949 2.869 150.6 9.9 21.4
1998 05 02 12 40.77 +04 44.0 2.001 2.886 145.2 11.5 21.5
1998 05 07 12 36.65 +04 28.1 2.058 2.902 139.7 13.0 21.6
1998 05 12 12 33.17 +04 09.1 2.121 2.919 134.4 14.3 21.8
1998 05 17 12 30.36 +03 47.3 2.189 2.935 129.2 15.5 21.9
1998 05 22 12 28.19 +03 22.9 2.260 2.950 124.2 16.5 22.0
1998 05 27 12 26.66 +02 56.1 2.336 2.966 119.3 17.3 22.1
1998 06 01 12 25.75 +02 27.2 2.414 2.981 114.5 18.0 22.2
1998 06 06 12 25.41 +01 56.4 2.494 2.995 109.9 18.6 22.3
1998 06 11 12 25.63 +01 23.8 2.577 3.010 105.4 19.0 22.4
1998 06 16 12 26.34 +00 49.8 2.661 3.024 101.0 19.3 22.5
Brian G. Marsden (C) Copyright 1998 MPC M.P.E.C. 1998-G07
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