Orbit Fit and Astrometric record for 04TX357

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: 04TX357   
# Created Tue Apr 23 01:08:52 2019
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   32 observations of   32
# Arc:  19.16y
# First observation: 1999/10/13
#  Last observation: 2018/12/09
# Chi-squared of fit:   136.79 DOF:   58 RMS:  0.37
# Min/Max residuals:    -1.25    0.69
# Exact a, adot, b, bdot, g, gdot:
  1.732396E-05  4.118223E-02  6.452017E-06  1.199526E-02  3.450825E-02 -4.311987E-03
# Covariance matrix:
  3.9707E-13 -7.0061E-14  8.1552E-14 -1.8664E-14  7.8141E-14 -5.1522E-14
 -7.0061E-14  1.4673E-14 -1.8214E-14  4.1838E-15 -1.2636E-14  1.1504E-14
  8.1552E-14 -1.8214E-14  1.5416E-13 -1.5926E-14  2.3970E-14 -1.5693E-14
 -1.8664E-14  4.1838E-15 -1.5926E-14  2.4307E-15 -5.0719E-15  3.5909E-15
  7.8141E-14 -1.2636E-14  2.3970E-14 -5.0719E-15  1.5203E-13 -1.5212E-14
 -5.1522E-14  1.1504E-14 -1.5693E-14  3.5909E-15 -1.5212E-14  9.9146E-15
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.383383   35.622882    0.272789   -0.006586   -0.951674  2451464.880896
# Heliocentric elements and errors
Epoch:              2451464.5000  =  1999/10/13
Mean Anomaly:          336.83078 +/-     0.004
Argument of Peri:       34.73095 +/-     0.006
Long of Asc Node:       36.37168 +/-     0.000
Inclination:            16.21465 +/-     0.000
Eccentricity:         0.21735957 +/-    0.0000
Semi-Major Axis:     36.94515131 +/-    0.0023
Time of Perihelion: 2456743.4016 +/-       7.3
Perihelion:          28.91476920 +/-    0.0022
Aphelion:            44.97553343 +/-    0.0031
Period (y)              224.5662 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.49496984 +/-    0.0003
Ecliptic Y           17.21328067 +/-    0.0002
Ecliptic Z           -0.19371095 +/-    0.0000
Ecliptic XDOT        -0.00218052 +/-    0.0000
Ecliptic YDOT         0.00246848 +/-    0.0000
Ecliptic ZDOT         0.00095404 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   29.93896798 +/-    0.0002
Geocenter to KBO     28.97866717 +/-    0.0003
# Hcoef:  8.69

The following table shows the complete astrometric record for 04TX357. 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 (04TX357) followed by the observatory code and reference code for the source of the astrometry.

1999 10  13.380153 02 13 48.48   +13 02 04.7         04TX357   645  C~1SKy      
1999 10  13.380982 02 13 48.47   +13 02 04.6         04TX357   645  C~1SKy      
1999 10  13.383470 02 13 48.46   +13 02 04.6         04TX357   645  C~1SKy      
2004 10  15.42076  02 56 54.10   +20 04 16.1   22.2R 04TX357   695  Cm0609      
2004 10  15.50089  02 56 53.59   +20 04 14.3         04TX357   695  Cm0609      
2004 11  09.22177  02 54 04.77   +19 55 55.9   22.3R 04TX357   695  Cm0609      
2004 11  09.31417  02 54 04.11   +19 55 53.8         04TX357   695  Cm0609      
2004 11  10.29685  02 53 57.16   +19 55 31.2         04TX357   695  Cm0609      
2004 12  10.15688  02 50 41.47   +19 44 02.9   23.2R 04TX357   688  Cm1767      
2004 12  10.24016  02 50 40.89   +19 44 00.1         04TX357   688  Cm1767      
2004 12  11.11947  02 50 36.09   +19 43 43.4   21.8R 04TX357   688  Cm1767      
2004 12  11.20271  02 50 35.62   +19 43 40.9         04TX357   688  Cm1767      
2005 12  01.21277  03 00 48.35   +21 10 10.7   22.7R 04TX357   695  Cs2691      
2005 12  01.26886  03 00 47.98   +21 10 09.6         04TX357   695  Cs2691      
2005 12  01.32709  03 00 47.58   +21 10 07.9         04TX357   695  Cs2691      
2006 08  21.33972  03 18 31.60   +22 42 55.7   21.9R 04TX357   807  Cs2691      
2006 08  22.32390  03 18 32.11   +22 43 12.4         04TX357   807  Cs2691      
2006 08  23.31162  03 18 32.43   +22 43 29.8         04TX357   807  Cs2691      
2006 10  19.31756  03 15 17.67   +22 45 16.8   22.5R 04TX357   695  Ct0489      
2006 10  20.24785  03 15 11.69   +22 45 04.9         04TX357   695  Ct0489      
2006 10  20.37108  03 15 10.88   +22 45 03.4         04TX357   695  Ct0489      
2008 07  24.18782  03 36 11.76   +24 58 37.6   25.9R 04TX357   250  S~06Al      
2008 07  24.19407  03 36 11.79   +24 58 37.6         04TX357   250  S~06Al      
2008 07  24.20032  03 36 11.83   +24 58 37.9         04TX357   250  S~06Al      
2008 07  24.20657  03 36 11.81   +24 58 38.2         04TX357   250  S~06Al      
2008 10  24.37121  03 34 22.52   +25 19 15.1   23.5r 04TX357   695  C~0gMC      
2008 10  24.49233  03 34 21.71   +25 19 13.9   23.4r 04TX357   695  C~0gMC      
2014 09  26.42446  04 41 16.41   +31 52 33.3   24.3R 04TX357   695  C~1LJN      
2014 09  26.46908  04 41 16.34   +31 52 34.3         04TX357   695  C~1LJN      
2018 12  09.388210 05 21 54.194  +35 20 30.96  23.0r 04TX357   568              
2018 12  09.450190 05 21 53.673  +35 20 31.14  23.3r 04TX357   568              
2018 12  09.502640 05 21 53.219  +35 20 31.00  23.2r 04TX357   568              

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     0.38       0.00    -0.08
  2   0.0000      0.00     0.31       0.00    -0.16
  3   0.0000      0.00     0.39       0.00    -0.10
  4   5.0076      0.00    -0.22       0.00    -0.03
  5   5.0079      0.00    -0.17       0.00    -0.50
  6   5.0755      0.00    -0.33       0.00     0.01
  7   5.0758      0.00    -0.26       0.00     0.02
  8   5.0785      0.00    -0.29       0.00     0.06
  9   5.1602      0.00     0.26       0.00    -0.18
 10   5.1605      0.00    -1.25       0.00    -1.22
 11   5.1629      0.00     0.45       0.00     0.60
 12   5.1631      0.00     0.48       0.00    -0.17
 13   6.1351      0.00    -0.05       0.00     0.13
 14   6.1352      0.00     0.02       0.00     0.31
 15   6.1354      0.00    -0.15       0.00    -0.05
 16   6.8555      0.00    -0.04       0.00     0.46
 17   6.8582      0.00     0.38       0.00    -0.52
 18   6.8609      0.00     0.01       0.00    -0.34
 19   7.0169      0.00    -0.28       0.00     0.08
 20   7.0195      0.00    -0.15       0.00     0.09
 21   7.0198      0.00    -0.12       0.00     0.16
 22   8.7798      0.00     0.26       0.00     0.69
 23   8.7798      0.00     0.23       0.00     0.48
 24   8.7798      0.00     0.35       0.00     0.57
 25   8.7798      0.00    -0.43       0.00     0.66
 26   9.0321      0.00    -0.28       0.00    -0.05
 27   9.0325      0.00    -0.13       0.00    -0.08
 28  14.9543      0.00    -0.13       0.00     0.11
 29  14.9544      0.00     0.09       0.00     0.11
 30  19.1568      0.00    -0.07       0.00    -0.37
 31  19.1569      0.00     0.10       0.00    -0.22
 32  19.1571      0.00     0.04       0.00    -0.36

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.

04TX357    quality flag:3

Type:           4:3E      4:3E      4:3E

axisobj        36.946    36.946    36.946
ecceobj         0.218     0.218     0.218
incobj         16.215    16.215    16.215
qmin           28.379    28.318    28.372
qmax           45.128    45.121    45.225
amean          36.477    36.476    36.476
amin           35.978    35.989    35.954
amax           37.037    37.028    37.034
emean           0.205     0.195     0.204
emin            0.188     0.158     0.186
emax            0.221     0.222     0.223
imean          12.111    13.512    14.025
imin            7.261    10.829    12.519
imax           16.144    16.143    16.144
excite_mean     0.295     0.305     0.317
fracstop        1.000     1.000     1.000
cjmean          2.927     2.923     2.910

libcent 0       180.1     179.9     180.0
libamp  0       135.8     136.6     139.5
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       179.2     145.2     174.6
kozaiamp        180.0     180.0     180.0