MPEC 1999-P06 : 1998 AK8
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M.P.E.C. 1999-P06 Issued 1999 Aug. 3, 15:40 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 AK8
Revision to MPEC 1998-A17
Observations:
J98A08K 1C1999 08 01.73579 02 00 16.77 -37 53 34.3 413
J98A08K 1C1999 08 02.79011 02 01 58.36 -38 21 57.4 413
J98A08K 1C1999 08 02.79361 02 01 58.69 -38 22 03.0 413
J98A08K 1C1999 08 02.79632 02 01 58.94 -38 22 07.6 413
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
990801 413 60.1- 14.2- 990802 413 60.7- 14.7- MPC 32059 +0.048 day
Orbital elements:
1998 AK8
Epoch 1999 Aug. 10.0 TT = JDT 2451400.5 Williams
M 228.32973 (2000.0) P Q
n 0.40882771 Peri. 11.57303 -0.69452910 -0.40190199
a 1.7979426 Node 126.85421 +0.58615163 -0.79704857
e 0.1817571 Incl. 48.22593 +0.41719970 +0.45076421
P 2.41 H 16.5 G 0.15 U 2
Residuals in seconds of arc
980109 910 0.0 0.1- 980111 611 0.3+ 0.5+ 980118 113 0.5- 0.5-
980109 910 0.3+ 0.1+ 980111 611 0.3- 0.5- 980118 113 0.4- 0.7-
980109 910 0.0 0.1- 980111 611 0.1- 0.4- 980118 113 0.9- 0.4-
980109 910 0.2- 0.0 980111 611 0.6+ 0.5+ 980118 113 0.0 0.5-
980109 910 0.1- 0.3+ 980111 611 0.3+ 0.3+ 980120 104 0.1- 0.5+
980109 910 0.4- 0.1+ 980111 611 0.2- 0.1- 980120 104 0.0 0.3+
980109 910 0.1- 0.1+ 980111 611 0.1+ 0.5+ 980120 104 0.1+ 0.2+
980109 910 0.2+ 0.2+ 980111 611 0.1- 0.4- 980120 104 0.3+ 0.3+
980109 910 0.1+ 0.3+ 980111 611 0.1- 0.3- 980123 670 0.4- 0.3+
980110 910 0.1+ 0.4+ 980111 611 0.2- 0.1- 980123 670 0.8- 0.0
980110 910 0.2+ 0.1- 980111 611 0.2- 0.4- 980123 670 0.4- 0.5-
980110 910 0.0 0.3+ 980111 611 0.1+ 0.0 980125 670 0.4- 0.5-
980110 910 0.0 0.1+ 980111 046 0.2- 0.2- 980125 670 0.3- 0.2+
980110 910 0.2- 0.3+ 980111 046 0.1+ 0.1- 980125 670 0.4- 0.5-
980110 910 0.1+ 0.1- 980111 046 0.0 0.1+ 980128 422 0.2+ 0.1-
980110 910 0.0 0.2+ 980111 784 0.7+ 0.2- 980128 422 0.2- 0.5-
980110 910 0.1+ 0.1+ 980111 784 0.4+ 0.8+ 980128 422 0.5+ 0.1-
980110 910 0.2+ 0.0 980111 784 0.1- 0.0 980201 046 0.3- 0.3+
980110 910 0.0 0.2+ 980111 784 0.4- 0.3+ 980201 046 0.5- 0.1+
980110 910 0.1- 0.1+ 980111 784 0.5+ 0.8- 980201 046 0.3- 0.0
980110 910 0.1- 0.2- 980111 784 0.0 0.2- 980201 540 0.2+ 0.4+
980110 910 0.0 0.2+ 980111 557 0.1- 0.2- 980201 540 0.0 0.2+
980110 910 0.1+ 0.0 980111 784 0.2+ 0.3+ 980201 540 0.6+ 0.5+
980110 910 0.0 0.0 980111 784 0.2+ 0.5- 980205 046 0.0 0.1-
980110 910 0.1- 0.0 980111 784 0.4+ 0.0 980205 046 0.3- 0.4+
980110 910 0.0 0.0 980111 557 0.0 0.2- 980205 046 0.4- 0.1+
980110 611 0.3+ 0.8+ 980111 557 0.1+ 0.2- 980219 046 0.4- 0.3+
980110 611 0.0 0.1+ 980111 557 0.2+ 0.4- 980219 046 0.4- 0.1-
980110 611 0.2- 0.1- 980111 817 0.1+ 0.4- 980219 046 0.4- 0.2+
980110 658 1.2- 0.1- 980111 817 0.4+ 0.1- 980221 046 0.2- 0.4-
980110 658 0.9- 0.1+ 980111 817 0.1+ 0.3+ 980221 046 0.4- 0.3-
980110 658 0.2- 0.4- 980111 817 0.5- 0.7- 980221 046 0.4- 0.2-
980110 046 0.1- 0.0 980111 658 0.0 0.5- 980221 046 0.3- 0.4-
980110 046 0.2+ 0.2+ 980111 658 0.8- 0.0 980302 910 1.1+ 0.6+
980110 046 0.2- 0.1- 980111 658 0.0 0.1- 980302 910 1.5+ 0.6+
980110 046 0.1+ 0.2- 980111 046 0.3+ 0.2+ 980302 910 1.1+ 0.7+
980110 046 0.1+ 0.5+ 980111 046 0.5+ 0.5+ 980304 711 0.7+ 0.0
980110 587 0.3+ 0.1+ 980111 046 0.6+ 0.5+ 980304 711 0.8+ 0.0
980110 587 0.5+ 0.6- 980111 046 0.4+ 0.5+ 980305 711 0.5+ 0.1-
980110 627 0.8- 0.3+ 980111 046 0.3+ 0.2+ 980305 711 0.6+ 0.3-
980110 557 0.0 0.6- 980113 046 0.5+ 0.2- 980317 658 0.9- 0.3+
980110 557 0.1+ 0.2- 980113 046 0.5+ 0.1+ 980317 658 0.9- 0.2+
980110 627 0.5+ 1.6+ 980113 046 0.6+ 0.0 980317 658 1.4- 0.1+
980110 557 0.1+ 0.1- 980114 046 0.0 0.4- 980516 611 1.0+ 0.8-
980110 627 0.8+ 0.5- 980114 046 0.1+ 0.3- 980516 611 0.1+ 0.8-
980111 611 0.1+ 0.0 980114 046 0.3+ 0.1- 980516 611 (2.1+ 1.2-)
980111 611 0.8+ 1.5+ 980117 540 1.1- 0.2- 990801 413 0.2+ 0.2-
980111 611 0.3+ 0.0 980117 540 0.1- 0.1+ 990802 413 0.0 0.2-
980111 611 0.2+ 0.8+ 980118 113 0.7- 0.7- 990802 413 0.0 0.1-
980111 611 0.3+ 0.0 980118 113 0.5- 0.8- 990802 413 0.0 0.3-
980111 611 0.2- 0.4- 980118 113 0.5- 0.6-
Ephemeris:
1998 AK8 a,e,i = 1.80, 0.18, 48 q = 1.4712
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 07 31 01 57.45 -37 07.4 1.486 2.056 109.1 27.8 20.2
1999 08 10 02 13.12 -41 41.7 1.430 2.043 112.4 27.3 20.0
1999 08 20 02 26.89 -46 29.0 1.391 2.029 114.3 27.0 20.0
1999 08 30 02 37.96 -51 16.2 1.369 2.014 114.8 27.1 19.9
1999 09 09 02 45.23 -55 49.3 1.363 1.998 114.0 27.4 19.9
1999 09 19 02 47.44 -59 53.9 1.371 1.980 112.0 28.0 19.9
1999 09 29 02 43.48 -63 16.6 1.389 1.962 109.3 28.8 19.9
1999 10 09 02 32.88 -65 45.9 1.413 1.944 106.1 29.6 20.0
1999 10 19 02 16.74 -67 12.0 1.442 1.924 102.7 30.3 20.0
1999 10 29 01 58.21 -67 30.3 1.472 1.903 99.2 31.0 20.1
1999 11 08 01 41.30 -66 42.9 1.501 1.882 95.9 31.6 20.1
1999 11 18 01 29.19 -64 57.0 1.529 1.860 92.8 32.1 20.1
1999 11 28 01 23.16 -62 22.9 1.553 1.838 89.9 32.5 20.1
1999 12 08 01 22.88 -59 09.2 1.573 1.815 87.2 32.8 20.2
1999 12 18 01 27.48 -55 22.8 1.591 1.792 84.7 33.1 20.2
1999 12 28 01 35.91 -51 09.0 1.607 1.768 82.3 33.4 20.2
2000 01 07 01 47.26 -46 31.5 1.621 1.745 80.0 33.7 20.2
2000 01 17 02 00.91 -41 34.0 1.636 1.721 77.8 34.0 20.2
2000 01 27 02 16.33 -36 20.4 1.652 1.697 75.4 34.2 20.2
2000 02 06 02 33.16 -30 54.7 1.673 1.674 72.9 34.3 20.2
2000 02 16 02 51.20 -25 22.0 1.698 1.651 70.3 34.3 20.2
2000 02 26 03 10.25 -19 47.7 1.729 1.629 67.4 34.1 20.2
2000 03 07 03 30.21 -14 17.2 1.766 1.607 64.3 33.8 20.2
2000 03 17 03 51.03 -08 55.9 1.810 1.586 60.9 33.2 20.2
Gareth V. Williams (C) Copyright 1999 MPC M.P.E.C. 1999-P06
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