Orbit Fit and Astrometric record for 38083

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: 38083     
# Created Sun Dec  5 02:06:44 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     79 observations of     79
# Arc:  21.09y
# First observation: 1999/03/20
#  Last observation: 2020/04/21
# Chi-squared of fit:   190.37 DOF:    152 RMS:  0.27
# Min/Max residuals:    -0.78    1.68
# Exact a, adot, b, bdot, g, gdot:
  1.548405E-05  2.652859E-02 -1.477376E-06 -5.953755E-03  2.683247E-02  4.242185E-03
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.769191 -177.555670    0.055287    0.030704   -1.002025  2451257.808648
# Heliocentric elements and errors
Epoch:              2451258.5000  =  1999/03/21
Mean Anomaly:           76.24624 +/-     0.000
Argument of Peri:       78.20547 +/-     0.000
Long of Asc Node:        9.97587 +/-     0.000
Inclination:            12.79296 +/-     0.000
Eccentricity:         0.15460637 +/-    0.0000
Semi-Major Axis:     38.77745983 +/-    0.0000
Time of Perihelion: 2432578.2196 +/-       0.0
Perihelion:          32.78221749 +/-    0.0000
Aphelion:            44.77270218 +/-    0.0000
Period (y)              241.4778 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -38.21232078 +/-    0.0000
Ecliptic Y           -1.57637242 +/-    0.0000
Ecliptic Z            1.15056475 +/-    0.0000
Ecliptic XDOT        -0.00033769 +/-    0.0000
Ecliptic YDOT        -0.00271476 +/-    0.0000
Ecliptic ZDOT        -0.00059382 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.26203249 +/-    0.0000
Geocenter to KBO     37.26822021 +/-    0.0000
# Hcoef:  7.00

The following table shows the complete astrometric record for 38083. 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 (38083) followed by the observatory code and reference code for the source of the astrometry.

1999 03  20.307905 12 11 47.04   +00 39 05.1         38083     645  C~1egA      
1999 03  20.308322 12 11 47.04   +00 39 05.2         38083     645  C~1egA      
1999 03  20.308727 12 11 47.03   +00 39 05.2         38083     645  C~1egA      
1999 03  20.309144 12 11 47.03   +00 39 05.2         38083     645  C~1egA      
1999 03  20.311215 12 11 47.03   +00 39 05.3         38083     645  C~1egA      
1999 03  20.311632 12 11 47.02   +00 39 05.3         38083     645  C~1egA      
1999 04  17.13881  12 09 31.63   +00 51 49.1   22.4R 38083     695  Ca4930      
1999 04  17.18654  12 09 31.39   +00 51 50.3         38083     695  Ca4930      
1999 04  17.26738  12 09 30.98   +00 51 52.0         38083     695  Ca4930      
1999 04  18.17345  12 09 26.97   +00 52 13.9         38083     695  Ca4930      
1999 05  05.88205  12 08 16.39   +00 58 18.2         38083     950  Ca4930      
1999 05  05.94278  12 08 16.18   +00 58 18.4         38083     950  Ca4930      
1999 05  06.00443  12 08 15.94   +00 58 20.2         38083     950  Ca4930      
1999 05  07.01150  12 08 12.64   +00 58 36.6         38083     950  Ca4930      
1999 05  07.04517  12 08 12.43   +00 58 37.4         38083     950  Ca4930      
2000 06  23.88846  12 11 59.83   +00 07 23.0         38083     950  Cb6477      
2000 06  24.89813  12 12 00.62   +00 07 12.4         38083     950  Cb6477      
2000 06  25.89070  12 12 01.47   +00 07 01.2         38083     950  Cb6477      
2001 02  16.16225  12 24 05.58   -01 23 31.8   22.5R 38083     950  Cc6426      
2001 02  16.20072  12 24 05.44   -01 23 31.0   23.1R 38083     950  Cc6426      
2001 03  24.11944  12 21 23.41   -01 07 47.6   20.8  38083     304  Cf1478      
2001 03  24.15373  12 21 23.23   -01 07 46.8         38083     304  Cf1478      
2001 05  19.28213  12 17 28.44   -00 46 31.6   22.6R 38083     568  Ce6450      
2001 05  20.27983  12 17 25.88   -00 46 19.9         38083     568  Ce6450      
2001 05  20.36542  12 17 25.66   -00 46 19.0         38083     568  Ce6450      
2002 02  06.54211  12 29 31.10   -02 19 57.6   22.9R 38083     568  Cf1478      
2002 02  06.60974  12 29 30.89   -02 19 56.7         38083     568  Cf1478      
2004 01  25.20698  12 39 37.99   -04 07 03.9   22.7V 38083     J86  Cj8325      
2004 01  25.21757  12 39 38.01   -04 07 04.1   23.1V 38083     J86  Cj8325      
2004 01  25.22106  12 39 37.96   -04 07 04.0   23.4V 38083     J86  Cj8325      
2004 01  28.29015  12 39 32.98   -04 06 41.6         38083     809  Cj8325      
2004 01  28.33801  12 39 32.90   -04 06 41.3         38083     809  Cj8325      
2008 06  07.00761  12 50 23.77   -06 46 11.1         38083     807  Cz1541      
2008 06  07.10413  12 50 23.58   -06 46 10.7         38083     807  Cz1541      
2011 04  03.440157 13 08 44.194  -09 38 05.63  22.8G 38083     F51  C~41a0      
2011 04  03.454061 13 08 44.097  -09 38 05.53  23.6G 38083     F51  C~41a0      
2011 04  03.469908 13 08 44.042  -09 38 05.43  22.8G 38083     F51  C~41a0      
2011 04  03.483773 13 08 43.974  -09 38 04.76  22.5G 38083     F51  C~41a0      
2011 04  28.360475 13 06 44.519  -09 27 10.75  20.8G 38083     F51  C~41a0      
2011 04  28.374720 13 06 44.467  -09 27 10.08  22.6G 38083     F51  C~41a0      
2011 04  28.388836 13 06 44.390  -09 27 09.74  22.6G 38083     F51  C~41a0      
2012 04  16.393629 13 12 18.798  -10 20 23.48  23.0G 38083     F51  C~41a0      
2012 04  16.406835 13 12 18.726  -10 20 22.90  22.6G 38083     F51  C~41a0      
2012 04  16.420043 13 12 18.661  -10 20 22.60  22.7G 38083     F51  C~41a0      
2012 04  16.433284 13 12 18.605  -10 20 22.28  23.3G 38083     F51  C~41a0      
2013 03  17.27849  13 19 23.85   -11 20 19.4   23.2r 38083     W84  C~2JKZ      
2013 03  17.32141  13 19 23.66   -11 20 18.5         38083     W84  C~2JKZ      
2013 03  17.36897  13 19 23.45   -11 20 17.6         38083     W84  C~2JKZ      
2014 02  25.593869 13 25 18.885  -12 12 23.17  23.3G 38083     F51  C~41a0      
2014 04  28.460402 13 20 45.243  -11 50 15.40  23.5G 38083     F51  C~41a0      
2014 05  20.328400 13 19 12.747  -11 41 28.89  23.0G 38083     F51  C~41a0      
2015 01  24.644966 13 30 50.613  -12 59 05.46  22.7G 38083     F51  C~41a0      
2015 01  26.605370 13 30 50.134  -12 59 19.26  23.4G 38083     F51  C~41a0      
2016 02  09.660559 13 35 13.109  -13 44 49.09  23.6G 38083     F51  C~41a0      
2016 03  04.573419 13 34 12.055  -13 42 09.34  22.8G 38083     F51  C~41a0      
2016 04  03.441821 13 32 05.129  -13 32 57.94  23.1G 38083     F51  C~41a0      
2017 03  28.538426 13 37 14.672  -14 20 23.14  24.2G 38083     F51  C~41a0      
2018 03  17.547505 13 42 43.886  -15 08 15.04  23.5G 38083     F51  C~41a0      
2018 04  12.412086 13 40 45.566  -14 59 32.69  20.9G 38083     F51  C~41a0      
2019 01  14.651978 13 49 02.186  -15 51 25.25  23.2G 38083     F51  C~41a0      
2019 02  04.614397 13 49 07.834  -15 55 24.02  23.2G 38083     F51  C~41a0      
2019 04  03.462248 13 46 10.226  -15 46 52.74  22.9G 38083     F51  C~41a0      
2019 04  03.474041 13 46 10.166  -15 46 52.13  22.7G 38083     F51  C~41a0      
2019 04  03.485814 13 46 10.112  -15 46 52.09  22.9G 38083     F51  C~41a0      
2019 04  03.497623 13 46 10.069  -15 46 51.87  23.0G 38083     F51  C~41a0      
2019 04  06.448264 13 45 56.036  -15 45 49.69  23.2G 38083     F51  C~41a0      
2019 04  06.472813 13 45 55.912  -15 45 48.69  23.2G 38083     F51  C~41a0      
2019 04  06.485109 13 45 55.878  -15 45 48.34  22.3G 38083     F51  C~41a0      
2019 04  08.443208 13 45 46.484  -15 45 06.18  23.3G 38083     F51  C~41a0      
2019 04  08.454172 13 45 46.455  -15 45 05.45  22.5G 38083     F51  C~41a0      
2019 04  08.465145 13 45 46.395  -15 45 05.56  23.5G 38083     F51  C~41a0      
2019 05  02.351582 13 43 50.200  -15 35 35.45  23.4G 38083     F51  C~41a0      
2019 05  27.289425 13 42 03.256  -15 25 41.88  22.8G 38083     F51  C~41a0      
2019 05  31.350956 13 41 48.838  -15 24 15.01  23.9G 38083     F51  C~41a0      
2019 06  30.311731 13 40 39.973  -15 16 22.70  23.9G 38083     F51  C~41a0      
2020 04  21.368081 13 49 19.961  -16 23 10.76  22.5G 38083     F51  C~41a0      
2020 04  21.380089 13 49 19.907  -16 23 10.42  22.9G 38083     F51  C~41a0      
2020 04  21.392126 13 49 19.867  -16 23 09.97  22.1G 38083     F51  C~41a0      
2020 04  21.404120 13 49 19.776  -16 23 09.73  22.4G 38083     F51  C~41a0      

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    -0.14       0.00    -0.40
     2   0.0000      0.00    -0.11       0.00    -0.31
     3   0.0000      0.00    -0.23       0.00    -0.32
     4   0.0000      0.00    -0.19       0.00    -0.33
     5   0.0000      0.00    -0.04       0.00    -0.29
     6   0.0000      0.00    -0.15       0.00    -0.31
     7   0.0762      0.00     0.24       0.00     0.30
     8   0.0763      0.00    -0.08       0.00     0.34
     9   0.0765      0.00    -0.68       0.00     0.07
    10   0.0790      0.00    -0.12       0.00     0.10
    11   0.1275      0.00    -0.00       0.00     0.27
    12   0.1277      0.00     0.06       0.00    -0.55
    13   0.1278      0.00    -0.28       0.00     0.23
    14   0.1306      0.00     1.68       0.00     0.09
    15   0.1307      0.00     0.27       0.00     0.34
    16   1.2637      0.00    -0.27       0.00     0.03
    17   1.2665      0.00    -0.08       0.00     0.33
    18   1.2692      0.00    -0.21       0.00     0.44
    19   1.9134      0.00    -0.02       0.00     0.10
    20   1.9135      0.00     0.05       0.00     0.08
    21   2.0118      0.00     0.14       0.00     0.29
    22   2.0119      0.00     0.04       0.00     0.10
    23   2.1656      0.00     0.20       0.00     0.13
    24   2.1683      0.00     0.15       0.00     0.27
    25   2.1685      0.00     0.19       0.00     0.20
    26   2.8863      0.00    -0.10       0.00    -0.61
    27   2.8865      0.00    -0.27       0.00    -0.78
    28   4.8512      0.00    -0.15       0.00     0.25
    29   4.8512      0.00     0.40       0.00    -0.01
    30   4.8512      0.00    -0.27       0.00     0.07
    31   4.8596      0.00     0.20       0.00     0.26
    32   4.8598      0.00     0.33       0.00     0.18
    33   9.2175      0.00     0.31       0.00     0.67
    34   9.2178      0.00     0.15       0.00     0.13
    35  12.0387      0.00     0.02       0.00     0.13
    36  12.0387      0.00    -0.40       0.00    -0.13
    37  12.0388      0.00    -0.05       0.00    -0.44
    38  12.0388      0.00    -0.04       0.00    -0.13
    39  12.1069      0.00     0.08       0.00    -0.50
    40  12.1070      0.00     0.30       0.00    -0.19
    41  12.1070      0.00     0.13       0.00    -0.21
    42  13.0762      0.00    -0.13       0.00    -0.23
    43  13.0762      0.00    -0.23       0.00    -0.00
    44  13.0763      0.00    -0.23       0.00    -0.05
    45  13.0763      0.00    -0.09       0.00    -0.08
    46  13.9931      0.00    -0.00       0.00    -0.13
    47  13.9932      0.00     0.01       0.00    -0.12
    48  13.9933      0.00     0.02       0.00    -0.20
    49  14.9385      0.00    -0.14       0.00    -0.11
    50  15.1079      0.00    -0.25       0.00     0.13
    51  15.1677      0.00     0.04       0.00     0.13
    52  15.8503      0.00    -0.42       0.00     0.15
    53  15.8557      0.00    -0.17       0.00    -0.10
    54  16.8935      0.00    -0.15       0.00    -0.13
    55  16.9590      0.00     0.19       0.00    -0.03
    56  17.0408      0.00    -0.32       0.00    -0.09
    57  18.0239      0.00    -0.18       0.00     0.08
    58  18.9931      0.00     0.17       0.00    -0.27
    59  19.0639      0.00     0.09       0.00    -0.27
    60  19.8230      0.00     0.26       0.00     0.33
    61  19.8804      0.00     0.11       0.00     0.20
    62  20.0388      0.00     0.07       0.00    -0.15
    63  20.0388      0.00     0.02       0.00     0.21
    64  20.0388      0.00     0.05       0.00     0.01
    65  20.0388      0.00     0.26       0.00    -0.02
    66  20.0469      0.00    -0.37       0.00    -0.19
    67  20.0470      0.00    -0.44       0.00     0.28
    68  20.0470      0.00    -0.05       0.00     0.36
    69  20.0524      0.00    -0.07       0.00    -0.10
    70  20.0524      0.00     0.30       0.00     0.39
    71  20.0524      0.00     0.21       0.00     0.04
    72  20.1178      0.00     0.03       0.00     0.15
    73  20.1861      0.00    -0.09       0.00    -0.29
    74  20.1972      0.00     0.16       0.00    -0.21
    75  20.2793      0.00    -0.24       0.00     0.05
    76  21.0898      0.00     0.06       0.00     0.01
    77  21.0899      0.00     0.15       0.00     0.06
    78  21.0899      0.00     0.45       0.00     0.23
    79  21.0899      0.00    -0.01       0.00     0.18

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.

38083    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        38.827    38.827    38.827
ecceobj         0.156     0.156     0.156
incobj         12.787    12.787    12.787
qmin           32.601    32.567    32.671
qmax           45.958    45.967    46.100
amean          39.111    39.113    39.106
amin           38.761    38.764    38.756
amax           39.588    39.562    39.597
emean           0.112     0.117     0.101
emin            0.070     0.077     0.045
emax            0.165     0.166     0.166
imean          16.927    17.057    17.060
imin           13.028    13.028    13.028
imax           19.292    19.440    19.347
excite_mean     0.313     0.317     0.312
fracstop        1.000     1.000     1.000
cjmean          2.932     2.929     2.933

libcent 0      -180.0    -180.0    -180.0
libamp  0      -180.0    -180.0    -180.0
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       179.0     179.2     181.8
kozaiamp        179.9     180.0     180.0