MPEC 2001-M07 : 1999 YA
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M.P.E.C. 2001-M07 Issued 2001 June 19, 02:03 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 YA
Revision to MPEC 1999-Y14
Observations:
J99Y00A C2001 06 15.92350 18 23 45.68 +08 28 18.6 540
J99Y00A C2001 06 15.92789 18 23 45.14 +08 28 13.4 540
J99Y00A VC2001 06 15.94990 18 23 42.54 +08 27 43.2 19.5 R 540
J99Y00A IC2001 06 18.91134 18 17 48.74 +07 13 14.4 493
J99Y00A C2001 06 18.91297 18 17 48.51 +07 13 11.7 19.3 V 493
J99Y00A IC2001 06 18.96759 18 17 41.48 +07 11 42.9 493
Observer details:
493 Calar Alto. Observers M. Busch, A. Seib, F. Hormuth. Measurers R. Stoss,
A. Gnadig, A. Doppler. 1.52-m reflector + CCD
540 Linz. Observer E. Meyer. 0.6-m f/3.0 reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
010615 540 0.23+ 0.12- 010618 493 0.23+ 0.12- MPC 38861 -0.33 day
Orbital elements:
1999 YA
Epoch 2001 Apr. 1.0 TT = JDT 2452000.5 Williams
M 258.10936 (2000.0) P Q
n 0.45388798 Peri. 265.54648 +0.77340293 -0.22095913
a 1.6768862 Node 106.28091 +0.37849415 +0.91283623
e 0.3389534 Incl. 38.24176 -0.50851754 +0.34337601
P 2.17 H 18.3 G 0.15 U 4
Residuals in seconds of arc
991216 704 0.1+ 0.2+ 991227 402 0.5+ 1.1- 000106 118 0.4+ 0.1-
991216 704 0.4- 0.2- 991227 402 0.2- 1.4+ 000106 118 0.5+ 0.1-
991216 704 0.1- 0.4+ 991227 402 0.4+ 0.3- 000110 360 0.0 0.2-
991216 704 0.2+ 0.2+ 991229 402 0.5- 0.0 000110 360 0.1+ 0.2-
991218 704 0.4- 0.5- 991229 402 0.3- 1.9+ 000110 360 0.0 0.2-
991218 704 0.9- 0.1+ 991229 402 0.3+ 0.7+ 000114 747 0.4+ 0.4+
991218 704 0.4- 0.6- 991230 413 0.2+ 0.1+ 000114 747 0.2+ 0.8+
991218 704 0.1- 0.8+ 991230 413 0.1+ 0.4+ 000114 747 0.3+ 0.4+
991218 651 0.8- 0.1+ 991230 587 1.0+ 0.1+ 000114 747 0.4+ 0.6+
991218 651 1.1- 0.2- 991230 587 0.4+ 0.1- 000124 595 0.1- 0.6-
991218 651 0.6- 0.2+ 000104 402 0.4+ 0.0 000124 595 0.0 0.6+
991218 413 0.4+ 0.7+ 000104 402 0.2+ 0.2+ 000124 595 0.1+ 1.0-
991218 413 0.3+ 0.4+ 000105 704 0.3+ 0.8- 000125 402 0.4+ 0.1-
991219 704 0.5- 0.4- 000105 704 1.7+ 1.7+ 000125 402 (0.4- 2.8+)
991219 704 1.6- 1.2- 000105 704 0.5+ 0.3+ 000125 402 1.5- 0.6+
991219 704 0.5- 0.6- 000105 704 0.3+ 0.5+ 010615 540 0.3+ 0.8-
991219 704 0.4- 0.1- 000105 118 0.0 0.5- 010615 540 0.1- 0.2+
991220 704 0.0 0.6- 000106 118 0.6+ 0.1- 010615 540 0.1- 0.8+
991220 704 1.2- 0.7- 000106 118 0.1- 0.1- 010618 493 0.5+ 0.6+
991220 704 0.6- 1.2- 000106 704 0.3+ 0.2- 010618 493 0.2+ 0.6+
991220 704 0.6- 1.1- 000106 704 0.6- 0.5- 010618 493 0.1- 0.0
991220 413 0.1- 1.0+ 000106 704 0.5+ 0.1+
991220 413 0.4+ 0.4+ 000106 118 0.4+ 0.3-
Ephemeris:
1999 YA a,e,i = 1.68, 0.34, 38 q = 1.1085
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2001 06 10 18 34.04 +10 27.0 0.756 1.672 141.1 22.4 19.9
2001 06 20 18 15.52 +06 43.3 0.667 1.627 149.4 18.5 19.4
2001 06 30 17 51.97 +00 56.8 0.603 1.580 153.6 16.6 19.1
2001 07 10 17 25.85 -06 42.7 0.569 1.533 149.0 20.0 19.0
2001 07 20 17 00.63 -15 21.9 0.566 1.485 137.7 27.4 19.1
2001 07 30 16 39.69 -23 51.2 0.591 1.437 124.8 35.5 19.4
2001 08 09 16 25.02 -31 26.6 0.636 1.390 112.8 42.3 19.7
2001 08 19 16 17.20 -37 59.4 0.691 1.343 102.5 47.3 19.9
2001 08 29 16 16.17 -43 40.0 0.749 1.299 94.0 50.9 20.1
2001 09 08 16 21.60 -48 42.0 0.805 1.257 87.0 53.2 20.3
2001 09 18 16 33.51 -53 15.8 0.855 1.218 81.4 54.6 20.4
2001 09 28 16 52.55 -57 27.5 0.895 1.184 77.0 55.6 20.4
2001 10 08 17 20.05 -61 17.3 0.923 1.155 73.7 56.1 20.5
2001 10 18 17 58.48 -64 38.1 0.939 1.132 71.5 56.6 20.5
2001 10 28 18 50.87 -67 12.8 0.942 1.117 70.4 56.9 20.5
2001 11 07 19 58.31 -68 30.0 0.933 1.109 70.3 57.3 20.4
2001 11 17 21 15.43 -67 49.7 0.915 1.110 71.2 57.5 20.4
2001 11 27 22 30.09 -64 45.0 0.889 1.118 73.0 57.5 20.4
2001 12 07 23 32.87 -59 15.9 0.863 1.134 75.4 57.2 20.3
2001 12 17 00 22.57 -51 39.9 0.841 1.158 78.3 56.4 20.3
2001 12 27 01 02.20 -42 23.5 0.831 1.187 81.3 55.0 20.3
2002 01 06 01 35.01 -32 03.0 0.840 1.222 83.8 53.1 20.3
2002 01 16 02 03.54 -21 23.5 0.873 1.261 85.3 51.0 20.4
2002 01 26 02 29.51 -11 11.0 0.932 1.303 85.7 48.9 20.6
2002 02 05 02 54.03 -01 58.8 1.015 1.348 84.7 46.7 20.7
2002 02 15 03 17.85 +05 58.2 1.117 1.394 82.7 44.6 21.0
2002 02 25 03 41.48 +12 39.0 1.235 1.442 79.9 42.5 21.2
2002 03 07 04 05.20 +18 10.4 1.364 1.490 76.6 40.4 21.4
2002 03 17 04 29.23 +22 41.9 1.499 1.537 73.0 38.2 21.6
2002 03 27 04 53.67 +26 22.3 1.638 1.585 69.1 36.0 21.8
2002 04 06 05 18.52 +29 19.2 1.777 1.631 65.1 33.8 22.0
Gareth V. Williams (C) Copyright 2001 MPC M.P.E.C. 2001-M07
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