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IAU Minor Planet Center

Minor Planet Center

MPEC 2002-C51 : 2000 PQ9

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M.P.E.C. 2002-C51                                Issued 2002 Feb.  9, 14:45 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

                                   2000 PQ9

                           Revision to MPEC 2000-P50

Observations:
     K00P09Q  C2002 02 06.42310 09 12 49.17 +08 07 44.6          20.6 V      291
     K00P09Q  C2002 02 06.42897 09 12 48.68 +08 07 46.4          21.0 V      291
     K00P09Q  C2002 02 06.43553 09 12 48.14 +08 07 46.8          21.0 V      291
     K00P09Q  C2002 02 09.24728 09 09 02.81 +08 14 15.2          21.6 V      691
     K00P09Q  C2002 02 09.25124 09 09 02.50 +08 14 14.8          22.0 V      691
     K00P09Q  C2002 02 09.25505 09 09 02.16 +08 14 16.2          21.8 V      691

Observer details:
291 LPL/Spacewatch II.  Observer T. H. Bressi.  1.8-m Spacewatch telescope.
691 Steward Observatory, Kitt Peak.  Observer M. T. Read.  0.9-m Spacewatch
    telescope.

First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
020206 291 35.9+ 21.4-    020209 691 34.9+ 20.3-    MPO  6283   +0.00020 day

Orbital elements:
2000 PQ9
Epoch 2001 Oct. 18.0 TT = JDT 2452200.5                 MPC
M 170.39794              (2000.0)            P               Q
n   0.37510920     Peri.    6.68021     +0.55656634     +0.80454834
a   1.9041343      Node   297.33527     -0.77263371     +0.40955815
e   0.4319141      Incl.   13.48886     -0.30540310     +0.43007452
P   2.63           H   18.3           G   0.15           U   2
Residuals in seconds of arc
000809 704  0.2-  0.2+    000812 106  0.1+  0.1+    000830 127  0.1+  0.2-
000809 704  0.3-  0.5+    000813 670  0.1+  0.1-    000830 127  0.2+  0.4-
000809 704  0.2-  0.6+    000813 670  0.3-  0.3+    000905 185  0.1+  0.0
000809 704  0.1-  0.7+    000813 360  0.2+  0.1-    000905 185  0.7-  0.6-
000809 704  0.3-  0.9+    000813 360  0.1+  0.1-    000905 185  0.9-  0.4-
000810 118  0.1+  0.2+    000813 360  0.2+  0.2-    000907 185  0.1-  0.5-
000810 118  0.0   0.3+    000815 670  0.3+  0.5+    000907 185  0.3+  0.0
000810 118  0.1+  0.2+    000815 670  0.0   0.2+    000907 185  0.1-  0.1-
000810 046  0.1+  0.1+    000817 642 (2.8+  0.5-)   000909 704 (0.4+  3.2-)
000810 046  0.2-  0.2+    000817 642  0.5+  0.8+    000909 704  0.3+  1.1-
000810 046  0.1+  0.1+    000817 642  1.7+  0.2+    000909 704  0.4-  0.8-
000810 046  0.1+  0.2+    000817 642 (3.8-  1.7-)   000909 704  0.7+  0.9-
000810 713  0.8+  1.1+    000817 157  0.0   0.1-    000909 704  1.6+  0.9-
000810 713  0.3+  0.4+    000817 157  0.2+  0.4+    000910 163  0.0   0.2-
000810 713  1.2+  0.0     000817 157  0.2-  0.3+    000910 163  0.6+  1.9-
000810 713  0.3-  0.4+    000819 108  0.8+  0.6+    000918 704  0.5-  0.1-
000810 642  0.8+  0.7+    000819 108  0.5-  0.6-    000918 704  0.2-  0.3+
000810 642 (0.3-  2.6-)   000819 108  1.4-  0.7-    000918 704  1.1-  0.2+
000810 642  0.9-  0.6-    000820 118  0.5+  0.1+    000918 704  1.2-  1.1+
000810 557  0.0   0.2-    000820 118  0.5+  0.1+    000921 587  0.4+  0.0
000810 557  0.0   0.1-    000820 118  0.5+  0.1+    000921 587  0.1-  0.2-
000810 557  0.1-  0.2-    000822 118  0.3-  0.0     000921 071  0.2-  0.0
000810 151  0.3+  0.3-    000822 118  0.2+  0.2+    000921 071  0.4+  0.4+
000810 151  0.1+  0.3-    000822 704  0.4+  0.1-    000921 071  0.1+  0.6+
000810 151  0.1+  0.2-    000822 704  0.1+  0.0     000921 071  0.2+  0.4+
000810 151  0.3-  0.3-    000822 704  0.3+  0.1-    000922 108  0.1+  0.1-
000810 151  0.0   0.5-    000822 704  0.4+  0.1-    000922 108  0.1-  0.7-
000810 151  0.1-  0.6-    000822 704  0.7+  0.5-    000922 108 (1.0+  5.5+)
000810 046  0.1-  0.1+    000823 402  0.5-  0.2+    000922 469  0.0   0.1-
000810 157 (2.5-  1.0-)   000823 402  0.2-  0.0     000922 469  0.1-  0.0
000810 046  0.1-  0.0     000823 402  0.1+  0.2-    000923 469  0.0   0.1+
000810 046  0.1+  0.0     000824 726 (2.7+  1.5-)   000929 711  0.4+  0.5+
000810 046  0.2-  0.0     000824 726  0.4-  2.0-    000929 711  0.1-  0.4+
000810 157  1.3-  0.7-    000824 726  0.6-  0.7-    000929 711  0.1+  0.8+
000811 157  0.3-  0.8-    000825 670  0.2-  0.2-    001004 118  0.3+  0.1+
000811 157  0.1-  1.1-    000825 670  0.3-  0.1+    001004 118  0.3+  0.1+
000811 118  0.2+  0.0     000825 658  0.1-  0.4+    001007 704  0.5-  0.2+
000811 118  0.2+  0.0     000825 658  0.0   0.2+    001007 704  0.3-  0.4-
000811 118  0.1+  0.0     000825 658  0.2+  0.3+    001007 704  0.4+  0.2+
000811 734  0.1-  0.2-    000825 163  0.0   0.4-    001007 704  0.4-  0.2-
000811 734  0.1-  0.5-    000825 163  0.2-  0.2-    001022 118  0.5-  1.0+
000811 734  0.0   0.3-    000828 118  0.1-  0.0     001022 118  0.5+  0.4+
000811 704  0.3-  0.0     000828 118  0.1-  0.1+    001022 118  0.3+  0.3+
000811 704  0.0   0.1+    000828 360  0.0   0.1+    001023 587  0.4+  1.1+
000811 704  0.1-  0.1+    000828 360  0.1+  0.0     001023 587  0.1-  0.2-
000811 704  0.0   0.4+    000828 360  0.0   0.0     020206 291  0.5+  0.4-
000811 557  0.1-  0.1+    000829 127  0.5-  0.2+    020206 291  0.4+  0.6+
000811 557  0.1-  0.0     000829 127  0.4-  0.1-    020206 291  0.3+  0.1+
000811 557  0.1-  0.1+    000829 157  0.0   0.4+    020209 691  0.1-  0.7+
000811 557  0.1-  0.4+    000829 157  0.2-  0.1-    020209 691  0.1+  0.3-
000812 106  0.1-  0.4+    000829 157  0.3-  0.2+    020209 691  0.3-  0.6+
000812 106  0.6-  1.0+    000830 157  0.2-  0.4-

Ephemeris:
2000 PQ9                 a,e,i = 1.90, 0.43, 13                  q = 1.0817
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2002 02 05    09 14.72   +08 04.7    1.685    2.665   172.0     2.9    21.9
2002 02 15    09 01.43   +08 28.7    1.679    2.650   166.5     5.0    22.0
2002 02 25    08 49.13   +08 55.5    1.704    2.633   154.7     9.3    22.2
2002 03 07    08 38.94   +09 21.0    1.755    2.614   142.6    13.3    22.4
2002 03 17    08 31.61   +09 42.2    1.829    2.593   131.0    16.8    22.6
2002 03 27    08 27.46   +09 56.8    1.919    2.570   120.2    19.6    22.8
2002 04 06    08 26.44   +10 03.8    2.021    2.546   110.2    21.6    22.9
2002 04 16    08 28.31   +10 02.4    2.128    2.520   101.0    23.0    23.0
2002 04 26    08 32.75   +09 52.1    2.238    2.492    92.4    23.8    23.1
2002 05 06    08 39.38   +09 32.7    2.345    2.462    84.5    24.1    23.2
2002 05 16    08 47.88   +09 04.2    2.448    2.431    77.1    23.9    23.3
2002 05 26    08 57.96   +08 26.3    2.544    2.398    70.1    23.4    23.3
2002 06 05    09 09.38   +07 39.2    2.632    2.362    63.6    22.6    23.3
2002 06 15    09 21.94   +06 42.9    2.709    2.326    57.4    21.6    23.3
2002 06 25    09 35.48   +05 37.3    2.776    2.287    51.5    20.4    23.3
2002 07 05    09 49.88   +04 22.6    2.831    2.246    45.9    19.0    23.3
2002 07 15    10 05.06   +02 59.0    2.874    2.204    40.6    17.5    23.2
2002 07 25    10 20.97   +01 26.6    2.904    2.159    35.5    15.9    23.1
2002 08 04    10 37.57   -00 14.2    2.922    2.113    30.7    14.2    23.1

Brian G. Marsden             (C) Copyright 2002 MPC           M.P.E.C. 2002-C51

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