Orbit Fit and Astrometric record for 04TT357

The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.

# Object: 04TT357   
# Created Sun Oct 21 01:08:27 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   24 observations of   24
# Arc:  18.19y
# First observation: 1999/10/13
#  Last observation: 2017/12/20
# Chi-squared of fit:    79.76 DOF:   42 RMS:  0.32
# Min/Max residuals:    -0.71    0.97
# Exact a, adot, b, bdot, g, gdot:
  2.162011E-05  4.247879E-02 -1.234247E-06 -6.236833E-03  3.239247E-02 -3.403065E-03
# Covariance matrix:
  3.1382E-13 -5.3101E-14 -2.1959E-14  7.1876E-15  1.2597E-13 -4.9179E-14
 -5.3101E-14  1.3854E-14  6.1141E-15 -1.9494E-15 -7.3232E-15  1.2884E-14
 -2.1959E-14  6.1141E-15  1.4939E-13 -1.2972E-14 -8.9129E-15  6.7068E-15
  7.1876E-15 -1.9494E-15 -1.2972E-14  1.8331E-15  3.4624E-15 -2.1766E-15
  1.2597E-13 -7.3232E-15 -8.9129E-15  3.4624E-15  3.4277E-13 -2.8464E-14
 -4.9179E-14  1.2884E-14  6.7068E-15 -2.1766E-15 -2.8464E-14  1.4729E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.426838   28.588218    0.154567    0.058233   -0.976153  2451464.858550
# Heliocentric elements and errors
Epoch:              2451464.5000  =  1999/10/13
Mean Anomaly:          354.47516 +/-     0.001
Argument of Peri:      173.86809 +/-     0.001
Long of Asc Node:      229.90347 +/-     0.000
Inclination:             8.95895 +/-     0.000
Eccentricity:         0.44017546 +/-    0.0001
Semi-Major Axis:     56.25351016 +/-    0.2728
Time of Perihelion: 2453829.5481 +/-    1103.8
Perihelion:          31.49209542 +/-    0.1528
Aphelion:            81.01492490 +/-    0.3929
Period (y)              421.9225 +/-      3.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           27.99895429 +/-    0.0006
Ecliptic Y           15.08085661 +/-    0.0003
Ecliptic Z            1.84527220 +/-    0.0000
Ecliptic XDOT        -0.00194702 +/-    0.0000
Ecliptic YDOT         0.00303841 +/-    0.0000
Ecliptic ZDOT        -0.00054332 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   31.85564550 +/-    0.0005
Geocenter to KBO     30.87145952 +/-    0.0007
# Hcoef:  7.56

The following table shows the complete astrometric record for 04TT357. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (04TT357) followed by the observatory code and reference code for the source of the astrometry.

1999 10  13.357807 01 41 13.78   +14 10 21.0   22.7V 04TT357   645  C~2JxB      
1999 10  13.358637 01 41 13.78   +14 10 21.0   22.1V 04TT357   645  C~2JxB      
1999 10  13.361124 01 41 13.77   +14 10 21.0         04TT357   645  C~2JxB      
2000 11  30.283067 01 46 52.15   +14 14 12.2   22.6V 04TT357   645  C~2JxB      
2000 11  30.283896 01 46 52.15   +14 14 12.3   22.2V 04TT357   645  C~2JxB      
2000 11  30.286384 01 46 52.15   +14 14 12.2   23.8V 04TT357   645  C~2JxB      
2004 10  15.32995  02 31 44.52   +16 33 39.0   22.6R 04TT357   695  Cm0609      
2004 10  15.44108  02 31 43.88   +16 33 35.7         04TT357   695  Cm0609      
2004 11  09.19462  02 29 16.97   +16 20 22.1   22.0R 04TT357   695  Cm0609      
2004 11  09.28635  02 29 16.44   +16 20 18.8         04TT357   695  Cm0609      
2004 11  20.32402  02 28 12.25   +16 14 16.8   22.8R 04TT357   568  Cm0609      
2004 11  21.33267  02 28 06.64   +16 13 44.7         04TT357   568  Cm0609      
2006 10  19.29748  02 52 10.30   +17 17 25.7   21.9R 04TT357   695  Ct0489      
2006 10  20.22801  02 52 04.98   +17 16 58.9         04TT357   695  Ct0489      
2006 10  20.35183  02 52 04.31   +17 16 56.0         04TT357   695  Ct0489      
2007 11  09.25839  03 00 32.76   +17 27 17.6         04TT357   695  Cy4017      
2007 11  09.34454  03 00 32.22   +17 27 15.0         04TT357   695  Cy4017      
2008 12  21.25258  03 07 01.29   +17 26 38.1   21.8r 04TT357   695  C~0hkR      
2008 12  21.33022  03 07 00.95   +17 26 36.4   21.4r 04TT357   695  C~0hkR      
2010 10  09.34718  03 34 43.69   +18 27 24.1   22.5R 04TT357   688  C~0Nic      
2010 10  09.43422  03 34 43.34   +18 27 23.1         04TT357   688  C~0Nic      
2017 12  20.31799  04 39 18.648  +18 41 20.63  23.1R 04TT357   G37  C~2Uv4      
2017 12  20.39048  04 39 18.257  +18 41 19.48        04TT357   G37  C~2Uv4      
2017 12  20.44443  04 39 17.894  +18 41 18.98        04TT357   G37  C~2Uv4      

The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.

  1   0.0000      0.00    -0.04       0.00    -0.41
  2   0.0000      0.00     0.04       0.00    -0.39
  3   0.0000      0.00     0.10       0.00    -0.30
  4   1.1333      0.00    -0.14       0.00    -0.27
  5   1.1333      0.00    -0.09       0.00    -0.14
  6   1.1333      0.00     0.06       0.00    -0.16
  7   5.0075      0.00    -0.06       0.00     0.05
  8   5.0078      0.00    -0.05       0.00     0.09
  9   5.0755      0.00     0.48       0.00     0.97
 10   5.0758      0.00     0.88       0.00     0.70
 11   5.1060      0.00    -0.21       0.00    -0.03
 12   5.1088      0.00     0.05       0.00     0.16
 13   7.0169      0.00    -0.17       0.00     0.10
 14   7.0195      0.00    -0.71       0.00    -0.39
 15   7.0198      0.00     0.02       0.00     0.21
 16   8.0736      0.00    -0.03       0.00     0.22
 17   8.0739      0.00    -0.03       0.00     0.18
 18   9.1907      0.00    -0.03       0.00     0.08
 19   9.1909      0.00    -0.06       0.00     0.05
 20  10.9897      0.00    -0.35       0.00    -0.46
 21  10.9899      0.00     0.25       0.00     0.28
 22  18.1874      0.00    -0.24       0.00    -0.18
 23  18.1876      0.00     0.47       0.00    -0.36
 24  18.1878      0.00    -0.11       0.00    -0.14

The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.

04TT357    quality flag:3

Type:         5:2EEE    5:2EEE    5:2EEE

axisobj        56.243    56.243    56.243
ecceobj         0.440     0.440     0.440
incobj          8.958     8.958     8.958
qmin           30.986    30.986    30.986
qmax           81.120    81.096    81.137
amean          55.461    55.462    55.462
amin           54.820    54.821    54.820
amax           56.337    56.318    56.326
emean           0.430     0.430     0.430
emin            0.421     0.421     0.420
emax            0.440     0.440     0.441
imean           9.947     9.947     9.940
imin            9.835     9.835     9.835
imax           10.035    10.036    10.037
excite_mean     0.464     0.464     0.464
fracstop        1.000     1.000     1.000
cjmean          2.956     2.956     2.956

libcent 0       179.4     179.4     180.0
libamp  0        46.3      46.4      48.7
libcent 1      -180.0    -180.0    -180.0
libamp  1      -180.0    -180.0    -180.0
libcent 2      -180.0    -180.0    -180.0
libamp  2      -180.0    -180.0    -180.0
libcent 3      -180.0    -180.0    -180.0
libamp  3      -180.0    -180.0    -180.0
libcent 4      -180.0    -180.0    -180.0
libamp  4      -180.0    -180.0    -180.0

kozaimean       250.4     250.4     250.9
kozaiamp         82.1      82.0      83.5