MPEC 1999-P22 : 1998 RO1
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M.P.E.C. 1999-P22 Issued 1999 Aug. 7, 14:38 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 ISSN 1523-6714
1998 RO1
Revision to MPEC 1998-S04
Observations:
J98R01O 1C1999 08 04.69844 00 48 13.97 -08 55 13.9 19.4 R 413
J98R01O 1C1999 08 04.70164 00 48 13.86 -08 55 14.6 19.1 R 413
J98R01O 1C1999 08 04.70450 00 48 13.75 -08 55 15.1 19.4 R 413
J98R01O SC1999 08 07.43368 00 46 26.33 -09 05 21.0 711
J98R01O SC1999 08 07.44681 00 46 25.64 -09 05 24.2 711
Observer details:
413 Siding Spring. Observer R. H. McNaught. 1.0-m f/8 reflector + CCD.
711 McDonald Observatory. Observer P. J. Shelus. 0.76-m reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
990804 413 57.3- 71.9- 990807 711 65.8- 75.8- MPC 33092 +0.035 day
Orbital elements:
1998 RO1
Epoch 1999 Aug. 10.0 TT = JDT 2451400.5 Williams
M 233.97216 (2000.0) P Q
n 0.99956127 Peri. 151.04486 -0.80383246 -0.59240073
a 0.9906717 Node 351.95090 +0.44395146 -0.53703043
e 0.7200544 Incl. 22.67924 +0.39592989 -0.60054949
P 0.99 H 18.3 G 0.15 U 6
Residuals in seconds of arc
980914 704 0.3+ 0.7- 980917 426 0.0 0.2+ 980923 046 0.2+ 0.0
980914 704 0.3+ 1.0+ 980917 426 0.9- 0.2- 980923 046 0.9- 0.7-
980914 704 0.1- 0.8+ 980917 422 0.3- 0.0 980923 046 0.2- 1.1-
980914 704 (0.7- 2.2+) 980917 422 0.3- 0.3- 980924 699 (2.4+ 0.4-)
980915 426 0.8+ 0.3- 980917 422 0.1- 0.3+ 980924 699 1.2+ 0.1+
980915 426 0.4- 0.3+ 980917 587 0.1+ 0.8- 980924 699 1.2+ 0.9-
980915 426 0.6- 0.0 980917 587 0.0 0.5- 980927 422 0.3+ 0.3-
980915 426 1.4- 0.2+ 980917 587 1.2- 0.9- 980927 422 1.5+ 0.0
980915 587 0.1+ 0.0 980918 704 0.4- 0.5- 980927 557 0.1- 0.2-
980915 587 0.8+ 1.2+ 980918 704 1.0+ 0.1+ 980927 557 0.4+ 0.2+
980915 587 0.8+ 0.3+ 980918 704 1.6+ 0.8+ 981014 422 0.7- 1.1+
980916 422 0.2- 0.3+ 980918 704 1.3- 1.7+ 981015 422 0.7+ 0.2-
980916 422 0.1- 0.0 980918 422 0.0 0.2+ 981015 422 0.2- 0.6-
980916 422 0.2+ 0.0 980918 422 0.1+ 0.5+ 981015 422 0.7- 0.9+
980916 422 0.1- 0.0 980918 422 0.4+ 0.7+ 990804 413 0.6+ 0.0
980916 426 0.2- 0.3- 980918 557 0.2+ 0.2- 990804 413 0.7+ 0.1-
980916 426 0.3- 0.4- 980918 557 0.2- 0.0 990804 413 0.7+ 0.0
980916 426 0.2- 0.1- 980918 557 0.2- 0.2- 990807 711 0.5- 0.0
980916 557 0.1+ 0.4- 980920 587 0.8- 0.9- 990807 711 1.1- 0.0
980916 557 0.7- 0.2+ 980920 587 (0.4- 2.4-)
980917 426 0.1- 0.2+ 980923 046 0.4+ 0.0
Ephemeris:
1998 RO1 a,e,i = 0.99, 0.72, 23 q = 0.2773
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 07 31 00 50.14 -08 43.4 0.882 1.632 118.5 33.1 20.5
1999 08 05 00 48.06 -08 56.3 0.814 1.615 123.7 31.5 20.2
1999 08 10 00 44.24 -09 16.7 0.747 1.595 129.3 29.5 20.0
1999 08 15 00 38.29 -09 45.5 0.683 1.574 135.4 26.9 19.7
1999 08 20 00 29.74 -10 23.1 0.621 1.550 142.1 23.6 19.3
1999 08 25 00 18.05 -11 09.7 0.564 1.524 149.5 19.7 19.0
1999 08 30 00 02.61 -12 04.5 0.513 1.496 157.5 14.9 18.6
1999 09 04 23 42.86 -13 05.0 0.467 1.466 165.8 9.7 18.1
1999 09 09 23 18.46 -14 06.0 0.430 1.434 171.1 6.2 17.7
1999 09 14 22 49.68 -14 59.1 0.402 1.399 165.6 10.3 17.7
1999 09 19 22 17.67 -15 34.7 0.384 1.361 154.6 18.4 17.8
1999 09 24 21 44.34 -15 45.2 0.376 1.321 142.5 27.5 18.0
1999 09 29 21 11.93 -15 28.7 0.377 1.279 130.3 36.7 18.2
1999 10 04 20 42.23 -14 49.4 0.386 1.233 118.6 45.4 18.4
1999 10 09 20 16.23 -13 54.3 0.401 1.184 107.8 53.4 18.6
1999 10 14 19 54.05 -12 50.6 0.419 1.133 97.7 60.8 18.9
1999 10 19 19 35.20 -11 43.5 0.438 1.078 88.5 67.5 19.0
1999 10 24 19 18.86 -10 36.3 0.458 1.019 79.8 73.9 19.2
1999 10 29 19 04.16 -09 31.1 0.476 0.957 71.6 80.2 19.4
1999 11 03 18 50.19 -08 29.8 0.493 0.890 63.6 86.6 19.6
Gareth V. Williams (C) Copyright 1999 MPC M.P.E.C. 1999-P22
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