MPEC 2001-N16 : 1999 PJ1
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M.P.E.C. 2001-N16 Issued 2001 July 6, 21:50 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
1999 PJ1
Revision to MPEC 1999-P27
Observations:
J99P01J 1C2001 07 03.62834 19 22 41.13 -69 49 32.6 413
J99P01J 1C2001 07 03.63506 19 22 38.93 -69 49 29.5 413
J99P01J 1C2001 07 03.63712 19 22 38.49 -69 49 29.7 413
J99P01J 1C2001 07 04.62484 19 17 46.52 -69 43 19.2 413
J99P01J 1C2001 07 04.62691 19 17 45.82 -69 43 18.6 413
J99P01J 1C2001 07 04.62897 19 17 45.07 -69 43 17.1 413
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
010703 413 15.9+ 8.2+ 010704 413 15.8+ 8.1+ MPC 38801 -0.0085 day
Orbital elements:
1999 PJ1
Epoch 2001 Apr. 1.0 TT = JDT 2452000.5 Spahr
M 232.41015 (2000.0) P Q
n 0.45453289 Peri. 80.49359 +0.65288386 -0.66255070
a 1.6752997 Node 319.57725 +0.24746615 +0.64463949
e 0.3593370 Incl. 34.48273 +0.71589327 +0.38140072
P 2.17 H 18.0 G 0.15 U 1
Residuals in seconds of arc
990807 699 0.4- 0.4+ 990810 557 0.1- 0.2+ 990830 151 (2.6+ 0.0 )
990807 699 0.4- 0.3+ 990811 557 0.1- 0.4+ 990830 151 0.0 0.1+
990807 699 0.5- 0.8+ 990811 557 0.0 0.2+ 990830 151 0.9- 0.5+
990807 557 0.3- 0.6- 990811 557 0.2- 0.5+ 990830 151 0.3- 0.0
990807 557 0.2- 0.0 990812 402 0.2+ 0.3+ 990830 151 0.9+ 0.6+
990807 557 0.4+ 0.4+ 990812 402 0.2- 0.3+ 990831 108 0.1- 1.2-
990807 046 0.1+ 0.3- 990812 402 0.1- 0.1- 990831 108 (3.3- 3.2+)
990807 046 1.0- 1.3- 990813 151 1.4+ 0.6- 990831 108 (2.6- 2.6+)
990807 046 0.8- 0.1- 990813 151 0.8- 0.2- 990831 118 1.2+ 0.4-
990807 046 0.1+ 0.2+ 990813 151 (2.4- 0.6-) 990831 118 1.0+ 1.0-
990807 046 1.0- 0.2- 990813 151 0.2- 0.5- 990831 118 0.8+ 0.6-
990808 946 (3.0+ 3.7-) 990813 108 1.8+ 0.5+ 990831 595 0.1+ 1.3-
990808 946 (3.1+ 1.9-) 990813 108 (1.4- 4.2+) 990831 595 1.1+ 1.6-
990808 946 (1.4+ 3.8-) 990814 118 0.5- 0.5+ 990831 595 0.3- 1.3-
990808 595 0.6- 0.2+ 990814 118 0.5- 0.3+ 990901 670 0.6- 0.3-
990808 595 0.3- 1.3- 990814 118 0.5- 0.4+ 990901 670 0.1- 1.1+
990808 595 0.8- 1.0- 990817 071 0.5- 0.7+ 990901 670 0.8+ 0.8+
990808 595 0.0 0.0 990817 071 0.1+ 0.0 990901 658 0.3- 0.2+
990808 844 1.5- 0.1- 990817 071 0.1- 0.5+ 990901 658 0.0 0.3-
990808 844 1.0- 0.0 990818 071 0.4- 0.4+ 990901 658 0.0 0.1-
990808 844 0.0 0.1- 990818 071 1.2- 1.2+ 990901 587 0.4+ 0.5-
990808 844 0.2+ 0.4+ 990818 071 0.7- 0.6+ 990901 587 0.3- 0.8+
990808 711 0.2+ 0.1- 990818 108 1.7+ 0.2+ 990901 587 0.1+ 0.4+
990808 711 0.1+ 0.3- 990818 108 (0.2+ 2.4+) 990902 118 0.1+ 1.0-
990808 711 0.0 0.4- 990818 108 (0.5+ 2.9+) 990902 118 1.1+ 1.0-
990808 467 0.3+ 0.3+ 990819 071 0.0 0.3- 990902 118 0.0 0.3-
990808 467 0.1+ 0.0 990819 071 0.6+ 0.3- 990906 118 0.0 0.2-
990808 467 0.2- 0.3+ 990819 071 0.1+ 0.8+ 990906 118 0.1+ 0.1+
990808 467 0.3- 0.1- 990819 071 (1.8- 2.2+) 990906 118 0.2- 0.2+
990808 467 0.2+ 0.7+ 990820 670 0.1+ 0.9+ 990908 360 0.1+ 0.0
990808 467 0.5+ 0.0 990820 670 0.1+ 0.3+ 990908 360 0.1- 0.3-
990808 104 1.8+ 0.3- 990820 670 0.0 0.8+ 990908 360 0.0 0.1-
990808 104 0.8+ 0.6+ 990820 402 0.2+ 0.2- 990910 118 0.5+ 0.7+
990808 104 0.4- 0.5+ 990820 402 0.1- 0.0 990910 118 0.9+ 0.1+
990808 104 0.2- 0.4- 990820 557 0.2- 0.1- 990912 118 0.1- 0.3+
990808 611 0.5- 1.0+ 990820 557 0.1- 0.1+ 990912 118 0.1+ 0.3+
990808 611 0.4- 0.5+ 990820 557 0.0 0.1- 990913 848 0.1- 0.1-
990808 046 0.1- 0.4+ 990820 151 0.1+ 0.2- 990913 848 0.9+ 0.3+
990808 611 1.0- 0.2- 990820 046 0.1- 0.1+ 990913 848 0.6+ 0.3-
990808 046 0.3- 0.1+ 990820 151 0.9- 1.1- 990914 658 0.3- 0.6-
990808 046 0.1- 0.2+ 990820 046 0.0 0.1+ 990914 658 0.1- 0.6-
990808 046 0.0 0.2+ 990820 151 0.9+ 0.2+ 990914 658 0.2- 0.9-
990808 557 0.3+ 0.3+ 990820 151 0.7+ 0.4- 990914 118 0.7+ 0.4+
990808 557 0.4+ 0.1+ 990820 046 0.3- 0.0 990914 118 0.6+ 0.4+
990808 557 0.4+ 0.3+ 990820 046 0.2- 0.1- 990915 848 0.1- 0.4+
990809 734 0.2+ 0.6- 990820 151 0.9- 1.4+ 990915 848 0.1- 0.1+
990809 734 0.6- 1.5- 990820 046 0.1+ 0.0 990915 848 0.3- 0.0
990809 734 1.7- 1.6- 990820 557 0.2- 0.2- 990917 848 0.2- 0.7+
990809 734 0.2- 1.9- 990821 557 0.4- 0.2+ 990917 848 0.4- 0.2-
990809 734 1.2+ 1.6- 990821 557 0.2+ 0.0 990917 848 0.1+ 0.5+
990809 670 0.7+ 0.4- 990821 739 0.8+ 0.5- 990918 848 0.3- 0.0
990809 670 0.6+ 0.2- 990821 557 0.2+ 0.1- 990918 848 0.3+ 0.2-
990809 670 0.3+ 0.1- 990821 739 (1.6+ 3.2-) 990920 848 0.0 0.3+
990809 670 0.0 0.0 990821 413 0.3+ 0.2- 990920 848 0.1+ 0.2-
990809 467 0.1+ 0.6+ 990821 413 0.1+ 0.4- 990928 402 0.1+ 1.1+
990809 467 0.7+ 0.3- 990821 151 1.7- 0.4+ 990928 402 0.4- 0.6+
990809 428 1.6+ 0.2+ 990821 151 0.1- 0.4+ 990928 402 0.1+ 0.3-
990809 428 1.3+ 0.3+ 990821 151 0.5- 0.7+ 990928 587 0.0 1.3+
990809 428 0.9+ 0.2+ 990821 151 0.2+ 1.1+ 990928 587 0.6- 0.9-
990809 946 (2.1+ 2.2-) 990822 118 0.2- 0.2+ 990929 595 0.1+ 0.8+
990809 946 (2.3+ 1.7-) 990822 118 0.4- 0.2+ 990929 595 0.4+ 0.4+
990809 557 0.1- 0.2- 990822 118 0.1- 0.1+ 990929 595 0.2- 1.7+
990809 557 0.0 0.0 990822 402 0.2- 0.1+ 991008 360 0.4+ 0.5-
990809 557 0.2- 0.2- 990822 402 0.2+ 0.0 991008 360 0.2+ 0.0
990809 557 0.1+ 0.5- 990822 402 0.0 0.1+ 991008 360 0.5+ 0.4-
990809 557 0.1+ 0.3+ 990822 046 0.4- 0.1+ 991129 595 0.6- 0.3+
990810 739 1.2+ 0.0 990822 046 0.2- 0.2+ 991129 595 0.8- 0.4-
990810 739 (2.7+ 0.2-) 990822 046 0.0 0.0 991129 595 0.4- 0.3-
990810 739 0.3+ 0.1+ 990822 046 0.3- 0.1+ 991129 595 1.4- 0.3+
990810 658 0.3- 0.1+ 990823 046 0.0 1.0+ 000114 046 0.2+ 0.2-
990810 658 0.2+ 0.0 990823 046 0.5- 0.0 000114 046 0.0 0.4+
990810 658 0.3+ 0.0 990823 046 0.1- 0.2+ 000114 046 0.0 0.3+
990810 467 0.9- 0.3- 990824 118 0.1- 0.1- 000114 046 0.4+ 0.2-
990810 467 0.1- 0.3+ 990824 118 0.4- 0.4+ 000114 046 0.2- 0.1-
990810 467 0.3- 0.2- 990824 118 0.1- 0.1- 000114 046 0.0 0.4+
990810 467 0.7+ 0.6- 990827 151 0.4+ 1.4- 000125 704 0.1+ 0.4+
990810 467 0.0 0.9+ 990827 151 0.4- 0.3- 000125 704 0.1- 0.0
990810 422 0.5- 0.4- 990829 402 0.4- 0.3+ 000125 704 0.5- 0.9+
990810 422 0.3- 0.1- 990829 402 0.1+ 0.3- 000125 704 1.4- 0.3+
990810 422 0.4- 0.1- 990829 402 0.8- 0.3+ 010703 413 0.0 0.1-
990810 422 0.3- 0.2- 990829 151 (3.4- 1.5-) 010703 413 0.8- 0.7+
990810 426 0.3- 0.4+ 990829 151 (5.2+ 1.5-) 010703 413 0.2+ 0.2-
990810 426 0.3+ 0.2+ 990829 151 0.3+ 0.9- 010704 413 0.7+ 0.2-
990810 426 0.1- 0.5- 990829 151 0.1+ 0.1- 010704 413 0.4+ 0.5-
990810 557 0.0 0.3+ 990830 151 (2.3+ 1.2+) 010704 413 0.3- 0.2+
Ephemeris:
1999 PJ1 a,e,i = 1.68, 0.36, 34 q = 1.0733
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2001 06 30 19 40.2 -70 02.5 1.002 1.846 132.2 24.1 20.5
2001 07 10 18 51.38 -68 48.7 0.947 1.803 133.3 24.2 20.3
2001 07 20 18 08.59 -65 33.6 0.911 1.759 131.7 25.5 20.2
2001 07 30 17 40.41 -60 39.3 0.893 1.713 127.6 28.0 20.2
2001 08 09 17 26.52 -54 48.8 0.894 1.666 121.6 31.2 20.2
2001 08 19 17 23.24 -48 39.8 0.911 1.617 114.4 34.7 20.3
2001 08 29 17 27.32 -42 38.2 0.941 1.567 106.9 38.1 20.4
2001 09 08 17 36.36 -36 57.4 0.980 1.517 99.5 40.9 20.5
2001 09 18 17 48.85 -31 41.1 1.025 1.466 92.4 43.2 20.6
2001 09 28 18 03.83 -26 47.4 1.072 1.415 85.9 45.0 20.6
2001 10 08 18 20.63 -22 11.6 1.118 1.364 80.0 46.2 20.7
2001 10 18 18 38.84 -17 48.0 1.160 1.314 74.7 47.0 20.7
2001 10 28 18 58.23 -13 30.8 1.196 1.267 70.0 47.5 20.7
2001 11 07 19 18.65 -09 15.2 1.225 1.222 65.9 47.8 20.7
2001 11 17 19 40.09 -04 56.9 1.245 1.181 62.6 48.0 20.6
Timothy B. Spahr (C) Copyright 2001 MPC M.P.E.C. 2001-N16
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