MPEC 2001-G23 : 1998 RO4
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M.P.E.C. 2001-G23 Issued 2001 Apr. 11, 17:37 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.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
1998 RO4
Revision to MPEC 1998-S12
Observations:
J98R04O 1C2001 04 05.62091 15 12 57.33 -14 09 00.7 413
J98R04O 1C2001 04 05.62502 15 12 57.33 -14 08 59.4 413
J98R04O 1C2001 04 05.62821 15 12 57.35 -14 08 57.8 413
J98R04O 1C2001 04 06.60839 15 12 59.61 -14 02 16.5 413
J98R04O 1C2001 04 06.61160 15 12 59.62 -14 02 15.3 413
J98R04O 1C2001 04 06.61480 15 12 59.61 -14 02 13.5 413
Observer details:
413 Siding Spring. Observer R. H. McNaught. 1.0-m f/8 reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
010405 413 24.0+ 3.9- 010406 413 24.4+ 3.9- MPC 33350 -0.0057 day
Orbital elements:
1998 RO4
Epoch 2001 Apr. 1.0 TT = JDT 2452000.5 Spahr
M 314.44018 (2000.0) P Q
n 0.31518735 Peri. 111.16853 +0.55069901 +0.83446843
a 2.1384061 Node 192.30562 -0.79618389 +0.51800521
e 0.4270119 Incl. 5.33739 -0.25064281 +0.18797082
P 3.13 H 17.9 G 0.15 U 3
Residuals in seconds of arc
980823 699 0.5+ 0.3- 980920 557 0.1- 0.2- 981013 422 0.3+ 0.5-
980823 699 0.4+ 0.7- 980923 426 0.6- 0.5- 981013 557 0.1- 0.3-
980823 699 0.4+ 0.1+ 980923 426 0.0 0.2- 981013 046 0.5+ 0.3+
980827 699 0.1+ 0.1+ 980923 426 0.2- 0.2- 981013 046 0.4+ 0.1+
980827 699 0.5- 0.1+ 980923 540 0.8+ 0.0 981014 699 0.7- 1.0+
980827 699 0.0 0.2+ 980923 540 0.7+ 0.1+ 981014 699 0.1+ 0.4-
980828 704 0.0 0.5+ 980923 540 0.5+ 0.1- 981014 699 0.3+ 0.7-
980828 704 1.7- 0.4- 980925 557 0.2+ 0.1- 981014 470 0.7- 0.6+
980828 704 0.5+ 0.1+ 980925 557 0.0 0.1- 981014 470 0.6- 1.0+
980828 704 0.2- 0.7+ 980926 704 0.5- 0.4- 981014 470 0.7+ 0.7+
980828 704 0.1+ 0.2- 980926 704 1.0- 0.6- 981015 704 0.6+ 0.7-
980914 704 0.3+ 0.5+ 980926 704 1.4- 0.3- 981015 704 0.2+ 0.9+
980914 704 0.2- 0.1+ 980926 704 0.6- 0.1- 981015 704 0.4+ 1.9+
980914 704 0.6+ 0.6+ 980926 704 0.1- 0.5- 981015 704 (2.2- 0.1-)
980915 699 0.0 0.3+ 980927 704 0.5+ 0.5+ 981019 699 0.4- 0.3+
980915 699 0.2+ 0.1+ 980927 704 0.1+ 0.2+ 981019 699 0.2+ 1.6+
980915 699 0.3- 0.2+ 980927 704 0.2+ 0.7+ 981019 699 0.2+ 0.1-
980918 704 0.4- 0.2- 980927 704 0.3+ 0.3- 981115 711 0.1+ 0.2+
980918 704 0.5- 0.4- 980927 704 0.2+ 0.5- 981115 711 0.1+ 0.2+
980918 704 0.2- 0.3+ 981002 402 0.0 0.2- 981116 711 0.1- 0.3+
980918 704 0.6+ 0.1+ 981002 402 0.2- 0.1+ 981116 711 0.1+ 0.1+
980918 704 0.4- 0.2+ 981002 402 0.1+ 0.5- 010405 413 0.0 0.5+
980920 470 0.5+ 0.7- 981002 360 0.2- 0.4+ 010405 413 0.0 0.2+
980920 470 0.4+ 0.1- 981002 360 0.0 0.1- 010405 413 0.3+ 0.5+
980920 470 0.5+ 0.0 981002 360 0.1- 0.2+ 010406 413 0.1- 0.3+
980920 557 0.1+ 0.2- 981012 470 (3.1- 1.6-) 010406 413 0.1+ 0.1+
980920 557 0.0 0.1- 981012 470 1.5- 1.8- 010406 413 0.1+ 0.6+
980920 557 0.2+ 0.3- 981013 422 0.2+ 0.6-
Ephemeris:
1998 RO4 a,e,i = 2.14, 0.43, 5 q = 1.2253
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2001 04 01 15 12.33 -14 37.2 0.907 1.801 141.6 20.2 20.0
2001 04 11 15 12.73 -13 29.2 0.798 1.745 151.4 15.9 19.5
2001 04 21 15 09.49 -11 54.3 0.705 1.690 161.8 10.7 19.0
2001 05 01 15 02.77 -09 55.0 0.632 1.635 171.1 5.5 18.4
2001 05 11 14 53.57 -07 40.5 0.577 1.580 168.9 7.1 18.2
2001 05 21 14 43.58 -05 26.4 0.541 1.527 157.9 14.4 18.3
2001 05 31 14 35.05 -03 32.1 0.521 1.476 146.3 22.4 18.4
2001 06 10 14 30.04 -02 13.4 0.513 1.427 135.4 30.0 18.5
2001 06 20 14 29.82 -01 37.8 0.514 1.382 125.9 36.6 18.6
2001 06 30 14 35.05 -01 46.3 0.519 1.340 117.9 42.1 18.8
2001 07 10 14 45.77 -02 34.2 0.526 1.304 111.4 46.5 18.8
2001 07 20 15 01.73 -03 55.4 0.533 1.274 106.4 49.9 18.9
2001 07 30 15 22.74 -05 42.9 0.541 1.250 102.6 52.4 19.0
2001 08 09 15 48.48 -07 48.2 0.550 1.234 100.0 54.0 19.0
2001 08 19 16 18.61 -10 02.1 0.561 1.226 98.3 54.8 19.1
2001 08 29 16 52.78 -12 13.6 0.577 1.227 97.5 54.7 19.1
2001 09 08 17 30.26 -14 09.8 0.599 1.235 97.2 54.0 19.2
2001 09 18 18 10.04 -15 39.2 0.631 1.252 97.2 52.8 19.3
2001 09 28 18 50.92 -16 32.6 0.673 1.276 97.3 51.1 19.5
2001 10 08 19 31.52 -16 45.9 0.728 1.307 97.2 49.3 19.6
2001 10 18 20 10.70 -16 20.7 0.795 1.344 96.6 47.4 19.8
2001 10 28 20 47.76 -15 21.9 0.875 1.386 95.5 45.5 20.1
2001 11 07 21 22.28 -13 56.7 0.967 1.431 94.0 43.7 20.3
2001 11 17 21 54.28 -12 12.2 1.071 1.480 91.8 41.9 20.5
2001 11 27 22 23.96 -10 14.4 1.185 1.532 89.2 40.1 20.8
2001 12 07 22 51.59 -08 08.4 1.309 1.585 86.2 38.3 21.0
2001 12 17 23 17.49 -05 57.9 1.440 1.639 82.8 36.6 21.3
2001 12 27 23 41.99 -03 45.7 1.578 1.695 79.1 34.7 21.5
2002 01 06 00 05.32 -01 34.1 1.722 1.750 75.1 32.9 21.7
2002 01 16 00 27.72 +00 35.3 1.869 1.806 71.0 31.0 21.9
Timothy B. Spahr (C) Copyright 2001 MPC M.P.E.C. 2001-G23
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