MPEC 2004-Q72 : 1999 XD106
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M.P.E.C. 2004-Q72 Issued 2004 Aug. 31, 21:31 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.
Supported in part by the Brinson Foundation
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
1999 XD106
Revision to MPEC 1999-X28
Additional Observations:
J99XA6D C2004 07 19.55105 19 40 19.23 -45 44 25.5 19.3 R EQ072E12
J99XA6D C2004 07 19.56241 19 40 18.04 -45 44 39.4 18.7 R EQ072E12
J99XA6D C2004 07 19.57380 19 40 17.02 -45 44 52.1 19.4 R EQ072E12
J99XA6D C2004 07 19.58514 19 40 15.87 -45 45 05.4 19.0 R EQ072E12
J99XA6D 1C2004 08 31.41500 18 45 44.63 -53 23 00.4 19.6 R EQ072413
J99XA6D 1C2004 08 31.42441 18 45 44.43 -53 23 02.2 19.6 R EQ072413
Observer details:
413 Siding Spring. Observer R. H. McNaught. 1.0-m f/8 reflector + CCD.
E12 Siding Spring Survey. Observers E. Christensen, R. Hill, D. McLean,
R. H. McNaught, G. J. Garradd, S. Larson, E. Beshore. 0.5-m Uppsala
Schmidt + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
040719 E12 0.18- 0.06+ 040831 413 0.13- 0.12+ MPC 38847 +0.30 day
Orbital elements:
1999 XD106
Epoch 2004 July 14.0 TT = JDT 2453200.5 MPC
M 330.44255 (2000.0) P Q
n 0.18562586 Peri. 301.31493 +0.82336684 -0.38621273
a 3.0435263 Node 84.37670 +0.54677129 +0.73612278
e 0.5704376 Incl. 24.69775 -0.15201386 +0.55584439
P 5.31 H 16.5 G 0.15 U 3
Residuals in seconds of arc
991117 704 0.4- 0.9+ 991215 704 0.5+ 1.2- 991229 402 0.6- 0.5+
991117 704 0.2+ 0.7+ 991215 704 0.7+ 0.7- 991230 704 0.1+ 0.2+
991117 704 0.9- 0.2- 991215 704 0.4- 0.4- 991230 704 1.4- 0.3-
991117 704 0.8- 0.7+ 991215 704 0.5+ 0.2- 991230 704 1.0- 0.7-
991210 704 0.6+ 0.1- 991215 704 0.7+ 0.3- 000104 402 0.2- 0.0
991210 704 0.8+ 0.1+ 991216 704 0.1- 0.1+ 000104 402 0.0 0.4+
991210 704 0.0 0.6+ 991216 704 0.3- 0.1- 000104 402 0.3- 0.0
991210 704 0.3- 0.3+ 991216 704 0.4- 0.4- 000106 118 0.5- 0.3+
991210 704 0.8+ 0.1- 991216 704 0.2+ 0.0 000106 118 0.5- 0.4+
991212 704 0.0 0.3- 991216 704 0.1+ 0.2- 000106 118 0.5- 0.1-
991212 704 0.3+ 0.4- 991216 402 1.2+ 0.3+ 000106 118 0.2+ 0.1+
991212 704 0.1+ 1.0- 991216 402 0.0 0.3+ 000106 118 0.2- 0.3-
991212 704 0.3- 0.6- 991216 402 0.2- 1.0+ 000129 402 0.3- 1.6+
991212 704 0.9+ 0.3- 991217 118 0.1- 0.8+ 000129 402 1.4+ 0.1+
991213 704 0.2- 0.5- 991217 118 0.1- 0.8+ 000129 402 0.2+ 1.5-
991213 704 0.1+ 0.2+ 991217 118 0.2- 1.0+ 040719 E12 0.3+ 1.0+
991213 704 1.1+ 0.3- 991227 402 0.2- 0.2+ 040719 E12 0.6- 0.1+
991213 704 0.2- 0.4- 991227 402 0.1- 0.4+ 040719 E12 0.3+ 0.3+
991214 704 0.2- 1.6- 991227 402 0.6+ 1.8+ 040719 E12 0.2- 0.1-
991214 704 1.2- 1.1- 991229 402 0.4+ 0.0 040831 413 0.0 0.4-
991214 704 0.9- 0.1- 991229 402 0.8+ 0.5+ 040831 413 0.1- 0.5-
Ephemeris:
1999 XD106 a,e,i = 3.04, 0.57, 25 q = 1.3074
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2004 08 23 18 50.25 -52 48.7 1.067 1.825 122.8 27.8 19.2
2004 09 02 18 45.44 -53 27.2 1.088 1.758 113.9 31.6 19.3
2004 09 12 18 47.70 -53 40.7 1.113 1.694 106.0 34.8 19.3
2004 09 22 18 57.14 -53 34.5 1.138 1.632 99.1 37.4 19.4
2004 10 02 19 13.25 -53 09.6 1.160 1.572 93.1 39.5 19.4
2004 10 12 19 35.23 -52 22.7 1.178 1.516 88.0 41.1 19.4
2004 10 22 20 02.16 -51 07.6 1.190 1.465 83.7 42.5 19.4
2004 11 01 20 32.85 -49 17.1 1.197 1.419 80.2 43.6 19.3
2004 11 11 21 06.03 -46 43.8 1.200 1.380 77.5 44.4 19.3
2004 11 21 21 40.49 -43 22.2 1.202 1.349 75.3 45.1 19.3
2004 12 01 22 15.12 -39 10.1 1.204 1.325 73.8 45.6 19.3
2004 12 11 22 49.12 -34 09.1 1.209 1.312 72.6 45.8 19.2
2004 12 21 23 22.08 -28 25.5 1.223 1.307 71.8 45.6 19.3
2004 12 31 23 53.80 -22 10.3 1.246 1.313 71.0 45.1 19.3
2005 01 10 00 24.35 -15 37.5 1.284 1.328 70.3 44.2 19.4
2005 01 20 00 53.91 -09 02.3 1.336 1.353 69.5 42.9 19.4
2005 01 30 01 22.70 -02 39.3 1.404 1.386 68.3 41.4 19.6
2005 02 09 01 50.94 +03 20.0 1.487 1.426 66.9 39.5 19.7
2005 02 19 02 18.86 +08 47.9 1.584 1.473 65.1 37.5 19.9
2005 03 01 02 46.60 +13 39.8 1.693 1.525 63.0 35.4 20.0
2005 03 11 03 14.26 +17 54.3 1.812 1.581 60.5 33.2 20.2
Kyle E. Smalley (C) Copyright 2004 MPC M.P.E.C. 2004-Q72
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