MPEC 1999-Q13 : 1998 SD15
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M.P.E.C. 1999-Q13 Issued 1999 Aug. 26, 14:10 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 SD15
Revision to MPEC 1998-S31
Observations:
J98S15D C1999 08 25.09677 04 15 27.83 +21 48 40.9 557
J98S15D C1999 08 25.09910 04 15 27.98 +21 48 37.9 557
J98S15D C1999 08 25.10377 04 15 28.56 +21 48 28.5 19.9 V 557
J98S15D WC1999 08 26.10623 04 17 13.61 +21 16 59.5 557
J98S15D WC1999 08 26.11088 04 17 13.92 +21 16 52.9 557
J98S15D WC1999 08 26.11322 04 17 14.23 +21 16 50.3 557
Observer details:
557 Ondrejov. Observer L. Sarounova. 0.65-m f/3.6 reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
990825 557 25.8- 33.9+ 990826 557 27.8- 34.0+ MPC 33106 +0.021 day
Orbital elements:
1998 SD15
Id. L. Sarounova (1999 observations)
Epoch 1999 Aug. 10.0 TT = JDT 2451400.5 Williams
M 97.76932 (2000.0) P Q
n 1.09452268 Peri. 35.77908 -0.77279171 +0.63387603
a 0.9325087 Node 184.01044 -0.63454286 -0.77074198
e 0.3449418 Incl. 26.79670 +0.01217898 +0.06448237
P 0.90 H 18.9 G 0.15 U 5
Residuals in seconds of arc
980923 704 0.0 1.7+ 980924 682 1.1+ 0.7- 980925 046 0.2+ 0.4+
980923 704 (0.4+ 2.7+) 980924 682 0.7+ 0.0 980927 860 (1.1+ 2.7-)
980923 704 0.2- 1.4+ 980924 704 1.0- 1.3+ 980927 860 (0.5+ 2.3-)
980923 704 (0.3- 2.3+) 980924 704 (0.4- 2.5+) 980927 860 0.0 0.6+
980923 704 1.1- 1.6+ 980924 658 0.1- 0.4+ 980927 557 0.1- 0.0
980923 046 0.7+ 0.9- 980924 704 1.4- 1.4+ 980927 557 0.1- 0.1+
980923 046 1.0+ 0.6- 980924 658 0.3+ 0.5+ 980927 557 0.1- 0.2+
980923 046 0.4+ 0.0 980924 658 0.3+ 0.6+ 980928 750 1.0- 0.1+
980923 046 0.9+ 1.2- 980924 426 0.3+ 0.4- 980928 750 1.7- 1.6-
980923 587 0.1- 0.1+ 980924 426 0.3+ 0.1- 980928 750 0.5- 0.6-
980923 587 0.1- 0.1+ 980924 426 0.4+ 0.1- 980928 670 0.6- 0.3-
980923 587 0.2+ 0.0 980924 426 0.4+ 0.7- 980928 670 0.7- 0.1+
980923 587 0.2+ 0.3- 980924 540 0.8+ 0.0 980928 670 0.8- 0.1+
980923 587 0.3+ 0.0 980924 540 0.7+ 0.2- 980928 670 0.5- 0.2+
980923 611 0.5+ 0.2- 980924 540 0.9+ 0.1- 980928 670 0.7- 0.2+
980923 611 0.4+ 0.3- 980924 540 0.3+ 0.2- 980929 670 1.2- 0.5+
980923 611 0.4+ 0.1- 980924 557 0.5+ 0.3- 980929 670 0.7- 0.7+
980923 611 0.4+ 0.0 980924 557 0.5+ 0.4- 980929 670 1.0- 0.8+
980923 557 0.2- 1.2- 980924 557 0.5+ 0.5- 980929 670 0.4- 0.7+
980923 557 0.2- 1.1- 980924 557 0.5+ 0.5- 980929 046 0.3- 0.9-
980923 557 0.4- 1.0- 980924 118 0.7+ 0.2- 980929 046 0.5- 0.7-
980924 966 0.2- 0.6+ 980924 118 0.6+ 0.2- 980929 046 0.5- 1.1-
980924 966 0.8- 1.3- 980924 118 0.6+ 0.0 980929 046 0.6- 1.3-
980924 835 (1.0- 3.2-) 980924 046 0.5+ 0.1- 981001 402 0.5- 0.2-
980924 816 0.2- 0.9- 980924 046 0.4+ 0.2- 981001 402 0.5- 0.1+
980924 835 0.9- 0.4- 980924 046 0.6+ 0.4- 981001 402 0.4- 0.1+
980924 816 0.1+ 0.3- 980924 046 0.6+ 0.4- 981009 046 0.1- 1.4+
980924 816 0.2- 0.6- 980924 620 0.6+ 1.2- 981009 046 0.0 0.7+
980924 816 0.0 0.7- 980924 620 0.6+ 0.4- 981009 046 0.0 0.5+
980924 835 0.8+ 1.2- 980924 620 0.7+ 0.5- 981009 046 0.1- 0.7+
980924 704 0.5- 1.8+ 980924 620 0.8+ 1.0- 981013 422 0.1- 0.0
980924 704 0.2- 1.6+ 980924 620 0.6+ 0.8- 981013 422 0.0 0.1-
980924 670 0.3- 0.3- 980925 713 0.0 0.1+ 981021 422 1.7- 0.3-
980924 704 1.9- 1.7+ 980925 713 0.1- 0.2- 981021 422 1.0- 0.2-
980924 670 0.3- 0.2- 980925 713 0.1- 0.2+ 981021 422 0.9- 0.3-
980924 670 0.2+ 1.0+ 980925 713 0.3- 0.2+ 981021 360 0.3- 0.0
980924 704 0.0 0.7+ 980925 713 0.1- 0.2+ 981021 360 0.0 0.2-
980924 670 0.2+ 0.5+ 980925 422 0.2+ 0.7- 981021 360 0.6+ 0.2+
980924 670 0.4- 0.5+ 980925 422 0.3- 0.8- 990825 557 1.5+ 0.9+
980924 704 1.3- 1.4+ 980925 422 0.2- 0.7- 990825 557 0.2+ 2.2+
980924 682 1.3+ 0.9+ 980925 422 0.4- 0.8- 990825 557 1.7+ 1.4+
980924 704 0.1- 1.8+ 980925 046 0.3+ 0.3+ 990826 557 1.7+ 2.0-
980924 682 1.3+ 0.2+ 980925 046 0.3+ 0.4+ 990826 557 0.5- 0.1+
980924 704 0.3- 1.3+ 980925 046 0.3+ 0.8+ 990826 557 0.5+ 1.9+
Ephemeris:
1998 SD15 a,e,i = 0.93, 0.34, 27 q = 0.6108
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 08 20 04 06.23 +24 19.5 0.625 1.117 82.4 63.9 20.4
1999 08 25 04 15.28 +21 51.8 0.604 1.137 85.6 62.4 20.3
1999 08 30 04 23.80 +19 09.1 0.582 1.156 88.9 60.9 20.2
1999 09 04 04 31.70 +16 09.3 0.559 1.173 92.3 59.3 20.1
1999 09 09 04 38.87 +12 50.3 0.535 1.188 95.8 57.5 20.0
1999 09 14 04 45.19 +09 10.3 0.512 1.202 99.5 55.7 19.9
1999 09 19 04 50.54 +05 07.7 0.490 1.214 103.1 53.7 19.7
1999 09 24 04 54.81 +00 42.0 0.470 1.225 106.8 51.7 19.6
1999 09 29 04 57.85 -04 06.5 0.452 1.234 110.3 49.6 19.5
1999 10 04 04 59.46 -09 15.4 0.437 1.241 113.5 47.7 19.4
1999 10 09 04 59.45 -14 40.4 0.425 1.247 116.3 45.9 19.3
1999 10 14 04 57.58 -20 14.2 0.417 1.251 118.4 44.5 19.2
1999 10 19 04 53.67 -25 47.3 0.413 1.253 119.7 43.7 19.2
1999 10 24 04 47.56 -31 09.1 0.413 1.254 120.1 43.3 19.1
1999 10 29 04 39.11 -36 09.1 0.418 1.253 119.6 43.6 19.2
1999 11 03 04 28.30 -40 38.1 0.426 1.251 118.2 44.3 19.2
1999 11 08 04 15.26 -44 28.7 0.437 1.247 116.2 45.5 19.3
1999 11 13 04 00.40 -47 36.4 0.451 1.241 113.7 46.9 19.4
1999 11 18 03 44.37 -50 00.1 0.466 1.234 110.9 48.5 19.5
1999 11 23 03 27.95 -51 41.7 0.483 1.225 107.9 50.1 19.6
1999 11 28 03 11.95 -52 45.2 0.499 1.215 104.9 51.7 19.7
1999 12 03 02 57.06 -53 15.4 0.516 1.203 101.8 53.4 19.8
1999 12 08 02 43.84 -53 17.7 0.532 1.189 98.8 55.0 19.9
1999 12 13 02 32.61 -52 57.6 0.546 1.173 95.8 56.6 20.0
1999 12 18 02 23.46 -52 20.1 0.559 1.156 92.9 58.2 20.0
1999 12 23 02 16.30 -51 29.7 0.570 1.138 90.1 59.8 20.1
1999 12 28 02 10.91 -50 29.4 0.578 1.118 87.4 61.5 20.1
2000 01 02 02 07.07 -49 21.6 0.583 1.096 84.7 63.3 20.2
2000 01 07 02 04.53 -48 08.0 0.585 1.073 82.1 65.2 20.2
2000 01 12 02 03.03 -46 49.9 0.584 1.048 79.5 67.3 20.2
2000 01 17 02 02.29 -45 28.2 0.579 1.022 76.9 69.7 20.2
2000 01 22 02 01.99 -44 03.3 0.570 0.994 74.2 72.3 20.2
2000 01 27 02 01.77 -42 34.8 0.557 0.965 71.5 75.3 20.2
2000 02 01 02 01.30 -41 01.5 0.540 0.935 68.6 78.9 20.2
2000 02 06 02 00.15 -39 22.0 0.519 0.904 65.5 83.0 20.2
2000 02 11 01 57.75 -37 33.3 0.494 0.872 62.0 88.0 20.2
2000 02 16 01 53.40 -35 30.7 0.466 0.839 58.0 93.9 20.2
Gareth V. Williams (C) Copyright 1999 MPC M.P.E.C. 1999-Q13
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