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    • MPEC 2006-S39 : COMET C/2006 M4 (SWAN)

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    M.P.E.C. 2006-S39                                Issued 2006 Sept. 21, 20:46 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
                  Supported in part by the TABASGO Foundation
             Prepared using the Tamkin Foundation Computer Network

                              MPC@CFA.HARVARD.EDU
          URL http://cfa-www.harvard.edu/iau/mpc.html  ISSN 1523-6714

                            COMET C/2006 M4 (SWAN)

Observations:
    CK06M040  C2006 09 18.80831 11 10 21.68 +25 42 35.0                 ES039349
    CK06M040  C2006 09 18.80904 11 10 21.89 +25 42 35.7                 ES039349
    CK06M040  C2006 09 18.80976 11 10 22.04 +25 42 37.9           7.9 T ES039349
    CK06M040  C2006 09 20.81117 11 17 44.84 +26 50 34.0                 ES039349
    CK06M040  C2006 09 20.81190 11 17 45.01 +26 50 35.6                 ES039349
    CK06M040  C2006 09 20.81262 11 17 45.18 +26 50 37.2           7.7 T ES039349

Observer details:
349 Ageo.  Observer K. Kadota.  0.25-m f/5.0 reflector + CCD.

Orbital elements:
    C/2006 M4 (SWAN)
Epoch 2006 Sept. 22.0 TT = JDT 2454000.5
T 2006 Sept. 28.72760 TT                                MPC
q   0.7831441            (2000.0)            P               Q
z  -0.0005608      Peri.   62.58382     -0.22227619     +0.84755105
 +/-0.0002878      Node   148.72725     +0.15022452     -0.45861470
e   1.0004392      Incl.  111.81929     +0.96334100     +0.26707634
Residuals in seconds of arc
060712 E12  0.7-  0.5+    060717 F84  0.1+  0.7-    060721 415  0.9+  0.8+
060712 E12  0.1-  0.4+    060717 F84  0.4-  1.1-    060721 415  0.9+  1.4+
060712 E12  0.3+  0.1-    060717 474  0.0   0.1+    060721 415  1.8-  1.1+
060712 E12  0.4+  0.2-    060717 474  0.0   0.8+    060722 F84  0.9-  0.7-
060713 415  0.1+  0.3+    060717 474  0.2+  0.0     060722 F84  0.5+  0.3+
060713 415  0.5-  0.6+    060718 F84  0.6-  0.0     060722 415  0.5+  0.1+
060713 415  0.1-  0.0     060718 F84  0.2-  0.0     060722 415  0.5+  0.3+
060713 415  0.1+  0.0     060719 F84  0.4+  0.9-    060722 415  0.4+  1.0+
060713 415  0.4+  0.5+    060719 F84  0.1-  0.6+    060723 F84  0.1-  0.3+
060713 E12  0.2+  0.3-    060719 415  0.8+  0.6+    060723 F84  0.4-  0.0
060713 E12  0.4-  0.3-    060719 415  0.7-  0.0     060724 F84  0.4-  0.2-
060715 474  1.2+  1.5-    060720 F84  0.7-  0.1-    060727 F84  0.7-  0.1+
060715 474  0.7+  1.0-    060720 F84  0.4+  0.7-    060918 349  0.4-  0.1-
060715 474  1.2+  0.3-    060720 F84  0.2+  0.5-    060918 349  0.3+  0.9-
060715 474  0.4+  0.6-    060720 415  0.1+  0.8-    060918 349  0.3+  0.2-
060716 F84  0.3-  0.1-    060720 415  0.1+  0.5+    060920 349  0.0   0.2+
060716 F84  0.4-  0.2-    060720 415  0.3-  0.4+    060920 349  0.0   0.3+
060716 F84  0.6-  0.0     060721 F84  0.1+  0.1-    060920 349  0.0   0.4+
060717 F84  0.5-  0.2-    060721 F84  0.2-  0.1-

Ephemeris:
    C/2006 M4 (SWAN)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2006 09 12    10 48.93   +22 02.4    1.731    0.847    19.2    23.0   9.0
2006 09 17    11 04.15   +24 42.4    1.629    0.815    23.7    29.7   8.7
2006 09 22    11 22.41   +27 31.5    1.522    0.794    28.2    36.7   8.4
2006 09 27    11 44.81   +30 26.6    1.412    0.784    32.6    43.6   8.2
2006 10 02    12 12.80   +33 20.6    1.304    0.786    37.0    50.1   8.0
2006 10 07    12 48.04   +35 59.4    1.202    0.799    41.3    55.6   7.9
2006 10 12    13 31.88   +37 58.6    1.113    0.824    45.5    59.8   7.9
2006 10 17    14 24.12   +38 43.7    1.046    0.859    49.7    62.2   7.9
2006 10 22    15 21.54   +37 41.5    1.006    0.902    53.5    62.6   8.1
2006 10 27    16 18.31   +34 44.0    0.999    0.951    57.0    61.2   8.3
2006 11 01    17 09.08   +30 19.8    1.026    1.006    59.8    58.5   8.6
2006 11 06    17 51.53   +25 17.9    1.084    1.065    61.5    54.9   8.9
2006 11 11    18 25.97   +20 20.4    1.169    1.127    62.3    51.1   9.4
2006 11 16    18 53.86   +15 51.1    1.273    1.191    62.1    47.2   9.8
2006 11 21    19 16.72   +11 58.5    1.391    1.257    61.1    43.5  10.2
2006 11 26    19 35.82   +08 42.3    1.518    1.324    59.4    39.9  10.6
2006 12 01    19 52.10   +05 58.2    1.651    1.392    57.3    36.6  11.0

     The "original" and "future" barycentric values of 1/a are -0.000116
and +0.000436 (+/- 0.000288) AU^-1, respectively.

Brian G. Marsden             (C) Copyright 2006 MPC           M.P.E.C. 2006-S39

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