• Processing (Info)

    • MPEC 2009-F46 : 2009 FS4

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    M.P.E.C. 2009-F46                                Issued 2009 Mar. 20, 15:42 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://www.cfa.harvard.edu/iau/mpc.html  ISSN 1523-6714

                                   2009 FS4

                           Revision to MPEC 2009-F36

Observations:
     K09F04S*tC2009 03 18.94834 10 29 29.32 +09 23 01.5          20.2 C EF046493
     K09F04S tC2009 03 18.97894 10 29 36.35 +09 21 55.3          20.4 C EF046493
     K09F04S tC2009 03 19.00948 10 29 43.44 +09 20 48.4          20.8 C EF046493
     K09F04S  C2009 03 19.06122 10 29 55.61 +09 18 54.1          21.0 C EF046493
     K09F04S  C2009 03 19.06263 10 29 55.95 +09 18 51.3          20.9 C EF046493
     K09F04S  C2009 03 19.06405 10 29 56.29 +09 18 47.9          21.3 C EF046493
     K09F04S  C2009 03 19.09859 10 30 04.70 +09 17 30.2          21.1 C EF046493
     K09F04S  C2009 03 19.10183 10 30 05.50 +09 17 22.9          20.8 C EF046493
     K09F04S  C2009 03 19.10518 10 30 06.35 +09 17 15.2          20.9 C EF046493
     K09F04S  C2009 03 19.17833 10 30 33.36 +09 14 44.6          20.5 R EF046H01
     K09F04S  C2009 03 19.18658 10 30 35.31 +09 14 26.6          20.5 R EF046H01
     K09F04S  C2009 03 19.19233 10 30 36.67 +09 14 14.0          20.6 R EF046H01
     K09F04S  C2009 03 19.20063 10 30 37.39 +09 13 48.4          20.0 R EF046H36
     K09F04S  C2009 03 19.20165 10 30 38.87 +09 13 53.6          20.5 R EF046H01
     K09F04S  C2009 03 19.22018 10 30 42.00 +09 13 04.5          20.8 R EF046H36
     K09F04S  C2009 03 19.23974 10 30 46.66 +09 12 20.8          20.6 R EF046H36
     K09F04S  C2009 03 19.86751 10 33 47.78 +08 47 52.5          20.3 V EF046611
     K09F04S  C2009 03 19.88452 10 33 52.28 +08 47 11.6          20.4 V EF046611

Observer details:
493 Calar Alto.  Observer F. Hormuth.  1.23-m reflector + CCD.
611 Starkenburg.  Observers M. Busch, T. Haeusler.  0.45-m f/4.4 reflector
    + CCD.
H01 Magdalena Ridge Observatory, Socorro.  Observer W. H. Ryan.  2.4-m f/8.9
    reflector + CCD.
H36 Sandlot Observatory, Scranton.  Observer G. Hug.  0.56-m reflector + CCD.

Orbital elements:
2009 FS4                                                 Earth MOID = 0.0247 AU
Epoch 2009 June 18.0 TT = JDT 2455000.5                 MPC
M  17.13921              (2000.0)            P               Q
n   0.25450242     Peri.  208.04513     -0.91284806     +0.40829878
a   2.4660854      Node   356.05267     -0.37261333     -0.83378707
e   0.5833844      Incl.    0.60250     -0.16693630     -0.37160628
P   3.87           H   25.3           G   0.15           U   8
Residuals in seconds of arc
090318 493  0.6-  0.5+    090319 493  0.5-  0.2+    090319 H36  0.6-  0.3+
090318 493  0.4-  0.3+    090319 493  0.5-  0.2+    090319 H01  0.4-  0.1+
090319 493  0.0   0.0     090319 493  0.2-  0.1+    090319 H36  1.0-  0.3-
090319 493  0.5-  0.3+    090319 H01  0.3-  0.3+    090319 H36  0.9-  0.4-
090319 493  0.5-  0.6+    090319 H01  0.4-  0.2+    090319 611  0.3-  0.5+
090319 493  0.5-  0.4+    090319 H01  0.4-  0.2+    090319 611  0.5-  0.2+

Ephemeris:
2009 FS4                 a,e,i = 2.47, 0.58, 1                   q = 1.0274
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2009 03 20    10 34.42   +08 43.8    0.0776   1.068   157.6    20.8    20.9
2009 03 22    10 45.68   +07 11.5    0.0693   1.061   158.7    19.9    20.6
2009 03 24    11 00.05   +05 12.0    0.0614   1.055   160.8    18.1    20.3
2009 03 26    11 18.60   +02 35.7    0.0541   1.050   164.0    15.2    19.9
2009 03 28    11 42.76   -00 49.4    0.0474   1.045   168.8    10.7    19.5
2009 03 30    12 14.33   -05 14.5    0.0418   1.040   174.8     5.0    18.9
2009 04 01    12 55.03   -10 40.3    0.0376   1.037   172.9     6.8    18.8
2009 04 03    13 45.22   -16 38.5    0.0353   1.033   162.1    17.3    19.0
2009 04 05    14 41.99   -22 06.2    0.0353   1.031   149.8    29.2    19.4
2009 04 07    15 38.88   -26 01.9    0.0374   1.029   138.3    40.3    19.8
2009 04 09    16 29.39   -28 12.2    0.0414   1.028   128.8    49.4    20.3
2009 04 11    17 10.54   -29 04.2    0.0467   1.027   121.8    56.0    20.7
2009 04 13    17 42.63   -29 11.5    0.0529   1.028   116.7    60.6    21.1
2009 04 15    18 07.35   -28 57.1    0.0597   1.028   113.3    63.6    21.5
2009 04 17    18 26.47   -28 33.8    0.0669   1.030   111.1    65.5    21.8
2009 04 19    18 41.43   -28 08.1    0.0743   1.032   109.7    66.4    22.1

   MPEC 2009-F36 inadvertently omitted the correct discovery observations of
this object as a result of slightly-different duplicate observations submitted
by the observers.  This MPEC corrects the discovery details.

Gareth V. Williams           (C) Copyright 2009 MPC           M.P.E.C. 2009-F46

    Read MPEC 2009-F45 Read MPEC 2009-F47

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