MPEC 1997-R11: 1997 RD1
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M.P.E.C. 1997-R11 Issued 1997 Sept. 7, 19:15 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/cfa/ps/mpc.html
1997 RD1
Revision to MPEC 1997-R05
Observations:
J97R01D C1997 09 04.60401 21 34 15.95 -04 42 11.7 16.8 V 900
J97R01D C1997 09 04.61317 21 34 16.07 -04 42 24.5 900
J97R01D C1997 09 04.88500 21 34 20.99 -04 48 40.0 16.3 126
J97R01D C1997 09 04.89576 21 34 21.13 -04 48 55.3 16.4 126
J97R01D C1997 09 04.90863 21 34 21.31 -04 49 12.6 16.4 126
J97R01D C1997 09 05.81977 21 34 37.78 -05 10 04.5 046
J97R01D C1997 09 05.82178 21 34 37.81 -05 10 06.4 16.8 V 046
J97R01D C1997 09 05.82380 21 34 37.83 -05 10 09.4 046
J97R01D C1997 09 05.82591 21 34 37.86 -05 10 12.2 046
J97R01D C1997 09 05.82869 21 34 37.94 -05 10 15.8 046
J97R01D C1997 09 05.83076 21 34 37.98 -05 10 18.6 046
J97R01D C1997 09 05.86244 21 34 38.49 -05 11 01.4 587
J97R01D C1997 09 05.87830 21 34 38.71 -05 11 23.4 587
J97R01D C1997 09 05.88576 21 34 38.83 -05 11 33.3 587
J97R01D C1997 09 06.01418 21 34 40.77 -05 14 28.1 619
J97R01D C1997 09 06.02137 21 34 40.83 -05 14 37.6 619
J97R01D C1997 09 06.47610 21 34 50.22 -05 24 41.8 17.1 R 422
J97R01D C1997 09 06.47718 21 34 50.22 -05 24 43.2 17.0 R 422
J97R01D C1997 09 06.47825 21 34 50.26 -05 24 44.6 17.1 R 422
J97R01D C1997 09 06.48119 21 34 50.30 -05 24 48.9 17.1 R 422
Observer details:
046 Klet. Observers J. Ticha, M. Tichy. Measurer M. Tichy. 0.57-m f/5.2
reflector + CCD.
126 Monte Viseggi. Observers P. Pietrapiana, G. Scarfi. Measurer
P. Pietrapiana. 0.40-m f/6 reflector + CCD.
422 Loomberah. Observer G. J. Garradd. 0.25-m f/4.1 reflector + CCD.
587 Sormano. Observers P. Chiavenna, V. Giuliani, F. Manca. 0.5-m reflector
+ CCD.
619 Sabadell. Observers F. Casarramona, E. Vigil. 0.51-m f/3.9 reflector
+ CCD.
900 Moriyama. Observer Y. Ikari. 0.25-m f/6.3 reflector + CCD.
Orbital elements:
1997 RD1
Epoch 1997 Aug. 20.0 TT = JDT 2450680.5 Williams
M 357.65112 (2000.0) P Q
n 0.22683856 Peri. 161.83716 +0.88509118 +0.46373770
a 2.6627157 Node 170.24684 -0.45068916 +0.87517468
e 0.4041596 Incl. 13.48693 -0.11615892 +0.13790079
P 4.34 H 16.0 G 0.15
From 47 observations 1997 Sept. 2-6.
Ephemeris:
1997 RD1 a,e,i = 2.66, 0.40, 13 q = 1.5866
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1997 08 30 21 33.11 -02 32.4 0.592 1.587 163.6 10.4 16.5
1997 09 09 21 35.75 -06 21.5 0.613 1.589 156.6 14.6 16.8
1997 09 19 21 41.28 -09 48.2 0.652 1.596 148.0 19.5 17.1
1997 09 29 21 49.90 -12 34.0 0.708 1.607 139.5 23.9 17.4
1997 10 09 22 01.43 -14 30.7 0.778 1.623 131.5 27.4 17.7
1997 10 19 22 15.42 -15 38.6 0.861 1.643 124.3 30.0 18.1
1997 10 29 22 31.24 -16 02.6 0.954 1.667 117.7 31.8 18.4
1997 11 08 22 48.41 -15 48.9 1.058 1.695 111.6 32.9 18.7
1997 11 18 23 06.47 -15 04.5 1.169 1.726 105.9 33.4 18.9
1997 11 28 23 25.06 -13 56.0 1.288 1.759 100.5 33.5 19.2
1997 12 08 23 43.98 -12 28.9 1.413 1.796 95.3 33.1 19.4
1997 12 18 00 03.05 -10 48.2 1.544 1.834 90.2 32.4 19.6
1997 12 28 00 22.17 -08 58.1 1.679 1.874 85.3 31.5 19.8
1998 01 07 00 41.29 -07 01.9 1.818 1.916 80.3 30.4 20.0
1998 01 17 01 00.39 -05 02.9 1.959 1.960 75.5 29.1 20.2
1998 01 27 01 19.44 -03 03.5 2.102 2.004 70.6 27.6 20.4
1998 02 06 01 38.47 -01 05.6 2.245 2.049 65.8 26.0 20.5
1998 02 16 01 57.45 +00 48.7 2.387 2.095 61.0 24.4 20.6
Gareth V. Williams (C) Copyright 1997 MPC M.P.E.C. 1997-R11
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