Orbit Fit and Astrometric record for 60458

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: 60458     
# Created Sun Dec  5 02:06:48 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     86 observations of     86
# Arc:  20.04y
# First observation: 2000/02/05
#  Last observation: 2020/02/18
# Chi-squared of fit:   394.57 DOF:    166 RMS:  0.38
# Min/Max residuals:    -0.83    1.21
# Exact a, adot, b, bdot, g, gdot:
  1.547942E-05  2.191780E-02 -4.643633E-06 -7.853082E-03  2.317562E-02 -7.944604E-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
    0.002658  132.244090   -0.065924   -0.000164   -0.986587  2451579.672633
# Heliocentric elements and errors
Epoch:              2451580.5000  =  2000/02/06
Mean Anomaly:          327.43555 +/-     0.000
Argument of Peri:      251.27549 +/-     0.000
Long of Asc Node:      312.32776 +/-     0.000
Inclination:            19.70601 +/-     0.000
Eccentricity:         0.40112445 +/-    0.0000
Semi-Major Axis:     59.36593270 +/-    0.0000
Time of Perihelion: 2466693.3217 +/-       0.0
Perihelion:          35.55280558 +/-    0.0000
Aphelion:            83.17905981 +/-    0.0000
Period (y)              457.4189 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -29.71414879 +/-    0.0000
Ecliptic Y           32.63115094 +/-    0.0000
Ecliptic Z            0.00180784 +/-    0.0000
Ecliptic XDOT        -0.00129153 +/-    0.0000
Ecliptic YDOT        -0.00242835 +/-    0.0000
Ecliptic ZDOT        -0.00092766 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.13324099 +/-    0.0000
Geocenter to KBO     43.14905750 +/-    0.0000
# Hcoef:  7.38

The following table shows the complete astrometric record for 60458. 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 (60458) followed by the observatory code and reference code for the source of the astrometry.

2000 02  05.17189  08 58 49.88   +17 07 41.8   22.8R 60458     695  Cb4132      
2000 02  05.28382  08 58 49.33   +17 07 43.3         60458     695  Cb4132      
2000 03  30.16035  08 55 20.78   +17 18 01.0   23.5R 60458     695  Cb4132      
2000 03  30.24751  08 55 20.58   +17 18 01.3         60458     695  Cb4132      
2000 12  27.41163  09 06 16.215  +16 10 47.42  22.2R 60458     568  Cl5056      
2000 12  28.40486  09 06 12.572  +16 10 58.13  22.5R 60458     568  Cl5056      
2001 03  24.20123  09 00 06.02   +16 30 32.7   22.8R 60458     695   f4565      
2001 03  24.30328  09 00 05.72   +16 30 33.5         60458     695   f4565      
2002 02  06.19144  09 07 49.76   +15 31 49.1   22.4R 60458     695  Ce8743      
2002 02  06.28058  09 07 49.33   +15 31 50.4         60458     695  Ce8743      
2002 02  07.26681  09 07 44.53   +15 32 06.7         60458     695  Ce8743      
2003 03  03.31846  09 10 31.48   +14 48 45.7         60458     568  Ch5665      
2003 03  03.36878  09 10 31.26   +14 48 46.5         60458     568  Ch5665      
2006 01  19.27742  09 27 57.27   +12 00 25.4   23.1R 60458     250  S~06Fb      
2006 01  19.28182  09 27 57.24   +12 00 25.5         60458     250  S~06Fb      
2006 01  19.28622  09 27 57.22   +12 00 25.6         60458     250  S~06Fb      
2006 01  19.29062  09 27 57.20   +12 00 25.6         60458     250  S~06Fb      
2007 10  19.80321  09 39 00.67   +10 18 20.7   23.8R 60458     250  S~06Fb      
2007 10  19.81085  09 39 00.69   +10 18 20.5         60458     250  S~06Fb      
2007 10  19.81918  09 39 00.72   +10 18 20.3         60458     250  S~06Fb      
2007 10  19.82682  09 39 00.74   +10 18 20.1         60458     250  S~06Fb      
2007 10  25.73098  09 39 17.73   +10 15 56.1         60458     250  S~06Fb      
2007 10  25.73862  09 39 17.75   +10 15 55.9         60458     250  S~06Fb      
2007 10  25.74626  09 39 17.77   +10 15 55.7         60458     250  S~06Fb      
2007 10  25.75390  09 39 17.79   +10 15 55.5         60458     250  S~06Fb      
2007 12  06.17751  09 39 46.55   +10 06 05.2         60458     250  S~06Fb      
2007 12  06.18515  09 39 46.54   +10 06 05.2         60458     250  S~06Fb      
2007 12  06.24140  09 39 46.47   +10 06 04.9         60458     250  S~06Fb      
2007 12  06.24904  09 39 46.46   +10 06 04.9         60458     250  S~06Fb      
2008 01  18.31490  09 37 37.37   +10 10 09.5         60458     250  S~06Fb      
2008 01  18.32254  09 37 37.33   +10 10 09.7         60458     250  S~06Fb      
2008 01  18.38295  09 37 37.07   +10 10 10.6         60458     250  S~06Fb      
2008 01  18.39198  09 37 37.03   +10 10 10.7         60458     250  S~06Fb      
2008 01  18.44962  09 37 36.78   +10 10 11.5         60458     250  S~06Fb      
2008 01  18.45726  09 37 36.75   +10 10 11.6         60458     250  S~06Fb      
2008 01  18.46351  09 37 36.72   +10 10 11.6         60458     250  S~06Fb      
2013 02  08.494045 10 00 38.565  +05 22 12.05  22.9G 60458     F51  C~41ny      
2013 02  08.509918 10 00 38.513  +05 22 12.25  23.1G 60458     F51  C~41ny      
2013 02  08.525832 10 00 38.412  +05 22 12.74  22.9G 60458     F51  C~41ny      
2013 02  08.543731 10 00 38.308  +05 22 13.36  23.9G 60458     F51  C~41ny      
2014 02  23.371012 10 04 33.747  +04 25 12.68  23.1G 60458     F51  C~41ny      
2014 02  23.382271 10 04 33.682  +04 25 13.29  23.4G 60458     F51  C~41ny      
2014 02  26.461200 10 04 18.540  +04 26 23.30  23.8G 60458     F51  C~41ny      
2014 02  26.472801 10 04 18.477  +04 26 23.42  22.5G 60458     F51  C~41ny      
2014 02  26.484353 10 04 18.430  +04 26 23.92  22.8G 60458     F51  C~41ny      
2014 02  26.495869 10 04 18.376  +04 26 24.18  23.2G 60458     F51  C~41ny      
2014 03  06.377942 10 03 40.372  +04 29 28.17  22.7G 60458     F51  C~41ny      
2015 01  16.490637 10 12 41.780  +03 11 18.19  22.5G 60458     F51  C~41ny      
2015 01  16.502085 10 12 41.728  +03 11 18.38  22.8G 60458     F51  C~41ny      
2015 01  16.513502 10 12 41.707  +03 11 18.25  23.9G 60458     F51  C~41ny      
2015 03  14.361966 10 08 15.174  +03 29 29.15  23.4G 60458     F51  C~41ny      
2015 04  15.16675  10 06 20.44   +03 41 14.5   23.2R 60458     695  C~1RSr      
2015 04  15.23755  10 06 20.24   +03 41 15.8         60458     695  C~1RSr      
2015 04  15.31670  10 06 20.05   +03 41 17.5         60458     695  C~1RSr      
2015 12  09.612684 10 19 23.576  +02 09 35.19  23.6G 60458     F51  C~41ny      
2015 12  09.622053 10 19 23.571  +02 09 35.09  24.0G 60458     F51  C~41ny      
2015 12  09.631459 10 19 23.562  +02 09 34.59  23.9G 60458     F51  C~41ny      
2015 12  09.640927 10 19 23.555  +02 09 34.62  23.8G 60458     F51  C~41ny      
2015 12  23.584314 10 19 05.999  +02 07 03.76  23.3G 60458     F51  C~41ny      
2016 01  04.591699 10 18 36.805  +02 06 30.37  23.4G 60458     F51  C~41ny      
2016 01  14.607022 10 18 03.608  +02 07 07.65  23.2G 60458     F51  C~41ny      
2016 01  14.618227 10 18 03.565  +02 07 07.55  23.9G 60458     F51  C~41ny      
2016 01  14.629502 10 18 03.528  +02 07 07.77  23.6G 60458     F51  C~41ny      
2016 01  14.640703 10 18 03.485  +02 07 07.79  24.0G 60458     F51  C~41ny      
2016 01  17.573146 10 17 52.427  +02 07 29.51  22.8G 60458     F51  C~41ny      
2016 03  31.345333 10 12 15.700  +02 32 39.32  22.5G 60458     F51  C~41ny      
2016 03  31.357559 10 12 15.639  +02 32 39.87  23.7G 60458     F51  C~41ny      
2016 03  31.358309 10 12 15.656  +02 32 39.82  22.1G 60458     F51  C~41ny      
2016 03  31.369792 10 12 15.603  +02 32 39.71  22.8G 60458     F51  C~41ny      
2016 03  31.370549 10 12 15.595  +02 32 40.21  22.7G 60458     F51  C~41ny      
2016 03  31.382076 10 12 15.553  +02 32 40.01  23.0G 60458     F51  C~41ny      
2018 01  16.514563 10 28 33.449  -00 03 10.79  23.2G 60458     F51  C~41ny      
2018 01  16.527233 10 28 33.425  -00 03 10.61  23.2G 60458     F51  C~41ny      
2018 01  16.539894 10 28 33.347  -00 03 09.93  23.4G 60458     F51  C~41ny      
2018 01  16.552553 10 28 33.317  -00 03 10.22  23.7G 60458     F51  C~41ny      
2019 01  10.555392 10 34 19.273  -01 09 57.18  23.0G 60458     F51  C~41ny      
2019 03  28.342026 10 28 31.643  -00 46 19.64  22.5G 60458     F51  C~41ny      
2019 04  02.331984 10 28 11.601  -00 44 06.03  22.9G 60458     F51  C~41ny      
2019 05  01.256383 10 26 50.682  -00 32 56.05  23.1G 60458     F51  C~41ny      
2019 05  01.282327 10 26 50.644  -00 32 55.47  23.1G 60458     F51  C~41ny      
2019 05  01.295553 10 26 50.633  -00 32 55.35  23.5G 60458     F51  C~41ny      
2019 05  01.308776 10 26 50.604  -00 32 54.93  23.2G 60458     F51  C~41ny      
2020 01  25.492108 10 38 55.282  -02 16 13.03  23.7G 60458     F51  C~41ny      
2020 02  18.241890 10 37 05.965  -02 10 22.68  23.1G 60458     G37  C~3lOx      
2020 02  18.331770 10 37 05.519  -02 10 20.63        60458     G37  C~3lOx      
2020 02  18.393410 10 37 05.197  -02 10 19.48        60458     G37  C~3lOx      

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    -0.15       0.00    -0.11
     2   0.0003      0.00    -0.17       0.00    -0.37
     3   0.1478      0.00     0.01       0.00     0.10
     4   0.1481      0.00    -0.01       0.00     0.01
     5   0.8932      0.00    -0.00       0.00     0.12
     6   0.8959      0.00     0.07       0.00    -0.01
     7   1.1308      0.00     0.27       0.00    -0.24
     8   1.1311      0.00     0.14       0.00    -0.21
     9   2.0042      0.00    -0.51       0.00     0.20
    10   2.0044      0.00    -0.38       0.00     0.01
    11   2.0071      0.00    -0.70       0.00    -0.02
    12   3.0723      0.00    -0.52       0.00    -0.10
    13   3.0724      0.00    -0.55       0.00    -0.06
    14   5.9551      0.00     0.83       0.00    -0.83
    15   5.9551      0.00     0.67       0.00    -0.80
    16   5.9551      0.00     0.67       0.00    -0.77
    17   5.9552      0.00     0.67       0.00    -0.83
    18   7.7033      0.00    -0.48       0.00    -0.51
    19   7.7033      0.00    -0.53       0.00    -0.52
    20   7.7033      0.00    -0.47       0.00    -0.50
    21   7.7034      0.00    -0.53       0.00    -0.51
    22   7.7195      0.00     1.21       0.00     0.81
    23   7.7196      0.00     1.21       0.00     0.79
    24   7.7196      0.00     1.21       0.00     0.77
    25   7.7196      0.00     1.21       0.00     0.75
    26   7.8330      0.00     0.23       0.00     0.11
    27   7.8330      0.00     0.22       0.00     0.14
    28   7.8332      0.00     0.24       0.00     0.08
    29   7.8332      0.00     0.23       0.00     0.11
    30   7.9511      0.00    -0.19       0.00     0.52
    31   7.9511      0.00    -0.29       0.00     0.62
    32   7.9513      0.00    -0.22       0.00     0.66
    33   7.9513      0.00    -0.23       0.00     0.63
    34   7.9515      0.00    -0.20       0.00     0.61
    35   7.9515      0.00    -0.15       0.00     0.60
    36   7.9515      0.00    -0.19       0.00     0.51
    37  13.0111      0.00    -0.28       0.00    -0.08
    38  13.0112      0.00     0.13       0.00    -0.19
    39  13.0112      0.00    -0.20       0.00    -0.01
    40  13.0113      0.00    -0.43       0.00     0.27
    41  14.0512      0.00    -0.27       0.00    -0.33
    42  14.0512      0.00    -0.39       0.00     0.02
    43  14.0597      0.00    -0.14       0.00    -0.14
    44  14.0597      0.00    -0.22       0.00    -0.28
    45  14.0597      0.00    -0.06       0.00    -0.05
    46  14.0598      0.00    -0.01       0.00    -0.05
    47  14.0813      0.00    -0.18       0.00    -0.12
    48  14.9468      0.00    -0.27       0.00    -0.04
    49  14.9468      0.00    -0.37       0.00     0.05
    50  14.9469      0.00    -0.00       0.00    -0.18
    51  15.1025      0.00     0.08       0.00    -0.35
    52  15.1896      0.00     0.23       0.00    -0.04
    53  15.1898      0.00    -0.05       0.00    -0.04
    54  15.1900      0.00     0.12       0.00     0.21
    55  15.8424      0.00    -0.15       0.00    -0.14
    56  15.8424      0.00    -0.13       0.00    -0.10
    57  15.8425      0.00    -0.17       0.00    -0.46
    58  15.8425      0.00    -0.18       0.00    -0.29
    59  15.8807      0.00    -0.30       0.00    -0.63
    60  15.9135      0.00    -0.07       0.00     0.21
    61  15.9410      0.00    -0.13       0.00     0.13
    62  15.9410      0.00    -0.14       0.00    -0.04
    63  15.9410      0.00    -0.06       0.00     0.10
    64  15.9411      0.00    -0.08       0.00     0.05
    65  15.9491      0.00    -0.29       0.00    -0.02
    66  16.1511      0.00     0.21       0.00     0.02
    67  16.1511      0.00    -0.02       0.00     0.29
    68  16.1511      0.00     0.28       0.00     0.22
    69  16.1511      0.00     0.13       0.00    -0.16
    70  16.1511      0.00     0.05       0.00     0.32
    71  16.1512      0.00     0.06       0.00    -0.14
    72  17.9476      0.00    -0.21       0.00    -0.07
    73  17.9476      0.00     0.15       0.00     0.03
    74  17.9476      0.00    -0.31       0.00     0.64
    75  17.9477      0.00    -0.04       0.00     0.28
    76  18.9306      0.00    -0.26       0.00     0.14
    77  19.1408      0.00     0.35       0.00    -0.04
    78  19.1544      0.00     0.26       0.00    -0.23
    79  19.2336      0.00     0.02       0.00    -0.25
    80  19.2337      0.00     0.11       0.00    -0.15
    81  19.2337      0.00     0.27       0.00    -0.27
    82  19.2338      0.00     0.17       0.00    -0.09
    83  19.9708      0.00    -0.06       0.00     0.22
    84  20.0358      0.00     0.13       0.00    -0.02
    85  20.0360      0.00     0.26       0.00     0.18
    86  20.0362      0.00     0.12       0.00     0.06

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.

60458    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        59.340    59.340    59.341
ecceobj         0.401     0.401     0.401
incobj         19.709    19.709    19.709
qmin           34.870    34.802    34.866
qmax           85.487    85.483    85.474
amean          59.571    59.522    59.568
amin           58.899    58.797    58.903
amax           60.472    60.459    60.462
emean           0.397     0.396     0.397
emin            0.377     0.376     0.377
emax            0.414     0.414     0.414
imean          21.690    21.693    21.685
imin           21.029    21.003    21.011
imax           22.605    22.667    22.609
excite_mean     0.542     0.542     0.542
fracstop        1.000     1.000     1.000
cjmean          2.904     2.904     2.904

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       178.2     177.9     178.3
kozaiamp        180.0     179.9     180.0