MPEC 1999-T28: 1999 LF6
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M.P.E.C. 1999-T28 Issued 1999 Oct. 7, 15:56 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
1999 LF6
Revision to MPEC 1999-L31
Observations:
J99L06F 6 1979 12 20.62660 07 03 51.94 -25 14 41.2 413
J99L06F 6 1979 12 20.66480 07 03 47.57 -25 14 55.8 413
Observer details:
413 Siding Spring. Trail located and measured by A. Boattini, G. Forti,
M. Tombelli, L. Tesi. 1.2-m Schmidt.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
791220 413 0.07+ 0.01+ 991004 704 0.4+ 0.6+ MPC 36088 -0.060 day
Orbital elements:
1999 LF6
Epoch 1999 Aug. 10.0 TT = JDT 2451400.5 Williams
M 340.53175 (2000.0) P Q
n 0.58949058 Peri. 140.61576 +0.96602507 +0.20642194
a 1.4086988 Node 208.64257 -0.22525128 +0.96748747
e 0.2804245 Incl. 18.93148 +0.12671792 +0.14614369
P 1.67 H 18.0 G 0.15 U 1
Residuals in seconds of arc
791220 413 0.1- 1.9- 990715 360 0.3+ 0.3+ 990912 557 0.1+ 0.4-
791220 413 0.5+ 1.5- 990715 360 0.3+ 0.4+ 990912 557 0.1- 0.2-
990610 704 0.6+ 0.9- 990715 587 0.9+ 0.3- 990912 557 0.1- 0.0
990610 704 0.3+ 0.0 990716 587 0.7+ 0.9+ 990912 557 0.3+ 0.2+
990610 704 0.0 0.1- 990717 071 (1.8+ 3.3-) 990912 557 0.1+ 0.0
990610 704 0.2- 1.0- 990717 118 0.3+ 0.2- 990913 848 0.6- 0.3+
990611 704 0.7- 0.7- 990717 071 0.2+ 0.3- 990913 848 0.5- 0.9+
990611 704 0.1+ 0.3+ 990717 118 0.1- 0.2+ 990913 848 0.7- 0.5+
990611 704 0.2+ 0.1- 990719 557 0.3- 0.6- 990914 540 0.1+ 1.2-
990611 704 0.3- 1.5- 990719 557 0.4- 0.7- 990914 540 0.1+ 0.0
990611 704 0.1- 0.2+ 990719 557 0.3- 0.4- 990914 540 0.3- 0.3+
990611 704 0.1- 0.6- 990722 402 0.2+ 0.1+ 990919 848 0.3- 0.0
990611 704 0.3+ 0.1+ 990722 402 0.5+ 0.0 990919 848 0.3+ 0.6-
990611 704 0.4- 0.6+ 990722 402 0.5+ 0.0 990919 848 0.2+ 0.2-
990611 704 0.1- 0.1+ 990724 595 0.4- 0.5+ 990920 848 0.4+ 0.2+
990611 704 0.3- 0.2- 990724 595 0.2+ 0.8- 990920 848 0.3+ 0.1-
990611 360 0.0 0.1- 990724 595 0.2+ 0.7- 990920 848 0.1+ 0.2-
990611 360 0.2- 0.1- 990731 658 0.1+ 0.7+ 990926 848 0.6+ 0.5-
990611 360 0.4- 0.1+ 990731 658 0.3- 0.1- 990926 848 0.2+ 0.5-
990612 596 0.7+ 1.6- 990731 658 0.3- 0.8+ 990926 848 0.2- 0.1-
990612 596 0.3- 1.6- 990731 402 0.2- 0.1- 990927 848 0.1+ 0.8-
990612 120 0.2- 0.3+ 990731 402 0.2+ 0.5- 990927 848 0.2- 1.1-
990612 120 0.4+ 0.4+ 990731 402 0.3+ 1.2- 990927 848 0.6+ 0.1+
990612 120 0.7- 1.0+ 990802 658 0.1- 0.2- 990927 355 0.3- 0.7-
990612 557 0.2- 0.6+ 990802 658 0.4- 0.1- 990927 355 0.6+ 0.6-
990612 046 0.2+ 0.3+ 990802 658 0.3+ 0.2- 990927 355 0.4+ 1.6-
990612 046 0.2- 0.6+ 990803 046 0.2- 0.2+ 990928 848 0.1+ 1.2-
990612 046 0.4- 1.0+ 990803 046 0.2- 0.1- 990928 848 0.2+ 0.8-
990612 046 0.2- 0.7+ 990803 046 0.7- 0.0 990928 848 0.2- 0.4-
990613 557 0.8- 0.5+ 990803 046 0.0 0.2+ 990930 104 0.5+ 1.0+
990613 557 0.2- 0.1+ 990810 658 0.1- 0.4+ 990930 104 0.2- 0.2+
990613 557 1.1- 0.2- 990810 658 0.1+ 0.2+ 990930 104 0.5+ 0.9-
990613 859 1.3- 0.4+ 990810 658 0.1+ 0.0 990930 104 0.5+ 1.4-
990613 859 0.3- 0.0 990811 846 0.2- 0.2+ 991001 704 0.2- 0.6+
990613 859 1.3+ 1.8- 990815 846 0.0 0.2+ 991001 704 0.5+ 0.5+
990617 587 0.5- 0.4+ 990815 846 0.3- 0.1- 991001 704 0.1+ 0.4+
990617 587 1.7- 0.1- 990815 846 0.3- 0.1- 991001 704 0.1+ 0.7+
990619 658 0.2- 0.2+ 990816 846 0.5+ 0.7+ 991001 704 0.2- 0.6+
990619 658 0.2- 0.5+ 990816 846 0.6+ 0.7- 991001 151 0.3- 0.4+
990619 658 0.3- 0.1+ 990816 846 0.4+ 0.4- 991001 151 0.5- 0.3+
990620 046 0.1+ 0.3- 990816 846 0.0 1.0- 991002 704 0.2- 0.5+
990620 046 0.3+ 0.0 990822 402 0.6- 0.0 991002 704 0.0 0.3+
990620 046 0.6- 0.5+ 990822 402 0.3+ 0.2- 991002 704 0.3- 0.5+
990620 046 0.6- 0.2+ 990822 402 0.4- 0.2+ 991002 704 0.2- 0.2+
990623 118 0.6+ 0.4- 990823 595 0.3+ 0.5- 991002 704 0.5- 0.1-
990623 118 0.1- 0.5- 990823 595 1.0+ 0.4- 991002 704 0.2- 0.9+
990625 046 0.2+ 0.4+ 990823 595 0.3+ 1.3- 991002 704 0.3- 0.6+
990625 046 0.3- 1.0- 990823 046 0.1- 0.4+ 991002 704 0.1- 0.4+
990625 046 0.2- 0.0 990823 046 0.1- 0.0 991002 704 0.3- 0.4+
990625 046 0.4- 0.4- 990823 046 0.1- 0.1+ 991002 704 0.5- 0.4+
990702 046 0.4- 0.6+ 990824 647 0.5- 1.0+ 991003 629 0.9+ 0.5+
990702 046 0.4+ 0.9+ 990824 647 (1.3+ 3.8+) 991003 629 0.7+ 0.1+
990702 046 0.1- 0.4+ 990824 647 1.4+ 1.2+ 991003 629 0.5+ 0.8+
990702 587 1.2+ 0.5+ 990828 647 0.5+ 0.9+ 991003 629 0.1+ 1.1-
990702 587 0.6- 1.1+ 990828 647 1.4+ 0.7- 991003 629 0.7+ 0.6+
990705 118 0.4+ 0.6+ 990828 647 1.8+ 0.9+ 991003 629 0.4- 0.2+
990705 118 0.0 0.6+ 990901 587 0.2- 1.5- 991003 629 0.1+ 0.2+
990705 118 0.4+ 0.4+ 990901 587 0.7+ 0.1- 991003 629 0.8- 0.1-
990710 661 0.0 0.7+ 990908 360 0.2+ 0.3- 991003 629 0.6+ 1.3-
990710 661 0.4+ 0.4- 990908 360 0.1- 0.1- 991004 704 1.1+ 0.1+
990712 108 0.9+ 1.0- 990908 360 0.2+ 0.2- 991004 704 0.8+ 0.3+
990712 108 (1.5+ 4.6-) 990912 046 0.3+ 0.0 991004 704 (2.4+ 0.5-)
990712 108 (2.8+ 3.7-) 990912 046 0.3+ 0.1- 991004 704 0.8+ 1.0-
990712 108 0.5- 1.4- 990912 046 0.2+ 0.2- 991004 704 0.2+ 0.0
990715 360 0.3+ 0.1- 990912 046 0.1+ 0.1+
Ephemeris:
1999 LF6 a,e,i = 1.41, 0.28, 19 q = 1.0137
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 09 29 02 36 +85 00.1 0.133 1.025 96.3 76.3 16.3
1999 10 09 04 09.94 +61 21.7 0.096 1.042 114.1 61.1 15.2
1999 10 19 04 15.38 +22 32.1 0.090 1.066 139.2 37.7 14.4
1999 10 29 04 11.12 -07 17.7 0.123 1.095 143.9 32.3 15.0
1999 11 08 04 03.86 -21 07.7 0.176 1.129 138.4 35.6 16.0
1999 11 18 03 56.57 -26 47.3 0.239 1.166 133.7 37.8 16.7
1999 11 28 03 51.20 -28 27.5 0.305 1.206 130.1 38.8 17.4
1999 12 08 03 48.58 -27 56.0 0.376 1.248 126.8 39.2 17.9
1999 12 18 03 49.25 -26 05.6 0.451 1.290 123.6 39.4 18.4
1999 12 28 03 53.17 -23 28.9 0.529 1.332 120.4 39.6 18.8
2000 01 07 04 00.03 -20 26.3 0.612 1.374 117.0 39.6 19.2
2000 01 17 04 09.55 -17 11.6 0.699 1.415 113.3 39.7 19.5
2000 01 27 04 21.34 -13 55.5 0.791 1.455 109.6 39.6 19.9
2000 02 06 04 35.04 -10 44.9 0.886 1.493 105.6 39.5 20.2
2000 02 16 04 50.42 -07 44.9 0.986 1.529 101.6 39.3 20.5
2000 02 26 05 07.17 -04 59.2 1.089 1.564 97.4 38.9 20.7
2000 03 07 05 25.08 -02 30.0 1.196 1.596 93.2 38.4 20.9
2000 03 17 05 43.98 -00 18.9 1.304 1.627 89.0 37.7 21.2
2000 03 27 06 03.67 +01 33.3 1.414 1.655 84.8 36.9 21.3
2000 04 06 06 23.99 +03 06.4 1.525 1.681 80.5 36.0 21.5
2000 04 16 06 44.83 +04 20.3 1.636 1.704 76.3 34.9 21.7
2000 04 26 07 06.03 +05 15.6 1.746 1.725 72.0 33.7 21.8
2000 05 06 07 27.49 +05 52.9 1.853 1.744 67.8 32.4 21.9
2000 05 16 07 49.12 +06 13.0 1.958 1.760 63.6 31.0 22.0
Gareth V. Williams (C) Copyright 1999 MPC M.P.E.C. 1999-T28
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