M.P.E.C. 2007-L45                                Issued 2007 June 12, 00:18 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

                                COMET 8P/TUTTLE

Observations:
0008P         C2007 04 22.46212 22 42 06.72 +41 19 22.9                 EL045693
0008P         C2007 04 22.46531 22 42 06.97 +41 19 25.6                 EL045693
0008P         C2007 04 22.46851 22 42 07.21 +41 19 28.2          20.3 T EL045693
0008P         C2007 04 26.46841 22 47 24.26 +42 14 04.1                 EL045693
0008P         C2007 04 26.47267 22 47 24.61 +42 14 07.5                 EL045693
0008P         C2007 04 26.47693 22 47 24.93 +42 14 11.2          20.4 T EL045693

Observer details:
693 Catalina Station, Tucson.  Observer C. W. Hergenrother.  1.54-m reflector
    + CCD.

Orbital elements:
   8P/Tuttle
Epoch 2008 Jan. 15.0 TT = JDT 2454480.5
T 2008 Jan. 27.01544 TT                                 MPC
q   1.0271358            (2000.0)            P               Q
n   0.07239462     Peri.  207.50542     -0.27029244     -0.50620119
a   5.7016235      Node   270.34150     +0.96276444     -0.13755064
e   0.8198520      Incl.   54.98269     +0.00516045     -0.85137546
P  13.61
From 50 observations 1967-2007, mean residual 0".91.  Nongravitational
   parameters A1 = +0.24 +/- 0.01, A2 = +0.0138 +/- 0.0001.

Ephemeris:
   8P/Tuttle
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2007 06 09    23 46.91   +53 37.7    3.326    3.055    65.9    17.7        19.0
2007 06 19    00 01.29   +56 34.5    3.175    2.964    68.9    18.6        18.8
2007 06 29    00 16.06   +59 36.9    3.022    2.871    71.8    19.7        18.7
2007 07 09    00 31.36   +62 43.9    2.869    2.777    74.5    20.7        18.5
2007 07 19    00 47.33   +65 54.2    2.717    2.682    77.2    21.7        18.4
2007 07 29    01 04.18   +69 06.2    2.565    2.585    79.8    22.7        18.2
2007 08 08    01 22.30   +72 18.4    2.414    2.488    82.2    23.8  17.8  18.0
2007 08 18    01 42.23   +75 28.7    2.263    2.389    84.5    25.0  17.3  17.8
2007 08 28    02 05.04   +78 34.6    2.113    2.289    86.7    26.1  16.8  17.6
2007 09 07    02 33.03   +81 33.4    1.963    2.188    88.8    27.4  16.3  17.4
2007 09 17    03 11.80   +84 21.0    1.813    2.086    90.8    28.8  15.7  17.2
2007 09 27    04 21.75   +86 49.7    1.662    1.983    92.8    30.3  15.1  16.9
2007 10 07    07 46.10   +88 29.0    1.510    1.880    94.8    32.0  14.4  16.6
2007 10 17    12 32.51   +87 53.5    1.356    1.777    96.9    33.8  13.7  16.3
2007 10 27    14 20.65   +86 36.0    1.199    1.674    99.1    35.9  12.9  16.0
2007 11 06    15 33.26   +85 40.4    1.039    1.573   101.5    38.1  12.0  15.6
2007 11 16    17 00.57   +85 14.8    0.877    1.474   104.2    40.6  11.1  15.2
2007 11 26    19 19.76   +84 44.2    0.713    1.379   107.3    43.1  10.1  14.6
2007 12 06    22 11.96   +81 36.6    0.551    1.289   110.9    45.6   8.9  14.0
2007 12 16    00 06.81   +71 45.5    0.399    1.207   114.8    47.8   7.6  13.2
2007 12 26    01 10.65   +48 43.2    0.282    1.137   116.2    50.9   6.4  12.4
2008 01 05    01 50.19   +10 07.2    0.259    1.081   105.3    61.3   5.7  12.4
2008 01 15    02 17.68   -20 10.4    0.346    1.044    90.2    70.5   6.1  13.3
2008 01 25    02 38.41   -35 36.3    0.479    1.028    81.3    71.2   6.6  14.0
2008 02 04    02 55.26   -43 53.3    0.620    1.034    76.5    67.9   7.3  14.4
2008 02 14    03 10.45   -48 58.7    0.753    1.063    73.9    63.2   7.9  14.8
2008 02 24    03 25.78   -52 29.3    0.872    1.112    73.1    58.3   8.6  15.0
2008 03 05    03 42.88   -55 08.2    0.973    1.177    73.6    53.9   9.4  15.3
2008 03 15    04 03.33   -57 18.1    1.057    1.255    75.3    50.1  10.1  15.5
2008 03 25    04 28.46   -59 11.2    1.126    1.342    78.1    46.7  10.8  15.7
2008 04 04    04 59.56   -60 51.1    1.183    1.435    81.7    43.6  11.5  15.8
2008 04 14    05 37.74   -62 15.3    1.232    1.533    85.9    40.8  12.2  16.0
2008 04 24    06 23.32   -63 15.1    1.280    1.633    90.4    38.0  12.8  16.1
2008 05 04    07 15.27   -63 37.1    1.331    1.735    94.8    35.4  13.4  16.3
2008 05 14    08 10.66   -63 10.4    1.391    1.838    98.6    32.9  14.0  16.4
2008 05 24    09 05.31   -61 52.7    1.465    1.941   101.6    30.7  14.6  16.6
2008 06 03    09 55.74   -59 52.4    1.557    2.044   103.3    28.9  15.2  16.8
2008 06 13    10 40.31   -57 25.5    1.669    2.146   103.5    27.4  15.7  17.0
2008 06 23    11 18.96   -54 49.1    1.800    2.248   102.3    26.2  16.3  17.2
2008 07 03    11 52.48   -52 16.2    1.951    2.348    99.8    25.3  16.9  17.5
2008 07 13    12 21.91   -49 55.5    2.119    2.448    96.2    24.4  17.4  17.7
2008 07 23    12 48.14   -47 51.2    2.301    2.546    91.9    23.5  17.9  17.9
2008 08 02    13 11.92   -46 04.5    2.495    2.643    86.9    22.5        18.2
2008 08 12    13 33.84   -44 34.9    2.698    2.738    81.5    21.5        18.4
2008 08 22    13 54.30   -43 20.8    2.905    2.833    75.8    20.3        18.6
2008 09 01    14 13.64   -42 20.1    3.115    2.926    69.9    18.9        18.8
2008 09 11    14 32.08   -41 30.9    3.324    3.018    63.8    17.4        18.9
2008 09 21    14 49.78   -40 51.1    3.529    3.109    57.6    15.8        19.1
2008 10 01    15 06.87   -40 18.8    3.727    3.198    51.3    14.1        19.2
2008 10 11    15 23.43   -39 52.5    3.916    3.287    45.0    12.4        19.3
2008 10 21    15 39.49   -39 30.8    4.094    3.374    38.6    10.6        19.4
2008 10 31    15 55.10   -39 12.6    4.257    3.460    32.4     8.8        19.4

Brian G. Marsden             (C) Copyright 2007 MPC           M.P.E.C. 2007-L45