Orbit Fit and Astrometric record for 574398

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: 574398    
# Created Fri Dec  3 02:08:13 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     78 observations of     78
# Arc:  11.14y
# First observation: 2010/05/18
#  Last observation: 2021/07/09
# Chi-squared of fit:   128.65 DOF:    150 RMS:  0.23
# Min/Max residuals:    -0.59    1.17
# Exact a, adot, b, bdot, g, gdot:
  2.180490E-05  7.074042E-02  6.712775E-06  2.272092E-02  5.233910E-02 -2.274445E-02
# 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
   -1.278443 -122.607596    0.007692   -0.022637   -1.011683  2455334.907476
# Heliocentric elements and errors
Epoch:              2455334.5000  =  2010/05/18
Mean Anomaly:          309.60749 +/-     0.000
Argument of Peri:       81.30599 +/-     0.000
Long of Asc Node:      241.15194 +/-     0.000
Inclination:            17.87159 +/-     0.000
Eccentricity:         0.31667335 +/-    0.0000
Semi-Major Axis:     22.94441800 +/-    0.0000
Time of Perihelion: 2460953.7388 +/-       0.0
Perihelion:          15.67853234 +/-    0.0000
Aphelion:            30.21030367 +/-    0.0000
Period (y)              109.9066 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -10.84079746 +/-    0.0000
Ecliptic Y          -16.94131769 +/-    0.0000
Ecliptic Z           -0.42610571 +/-    0.0000
Ecliptic XDOT         0.00374552 +/-    0.0000
Ecliptic YDOT        -0.00100846 +/-    0.0000
Ecliptic ZDOT         0.00121474 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   20.11760346 +/-    0.0000
Geocenter to KBO     19.10633620 +/-    0.0000
# Hcoef:  8.44

The following table shows the complete astrometric record for 574398. 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 (574398) followed by the observatory code and reference code for the source of the astrometry.

2010 05  18.40671  15 39 12.659  -20 49 19.36  21.6G 574398    F51  C~2jgo      
2010 05  18.41762  15 39 12.543  -20 49 18.85  21.3G 574398    F51  C~2jgo      
2010 05  20.30549  15 38 54.09   -20 47 53.3   21.6V 574398    G96  C~0Inp      
2010 05  20.31369  15 38 54.02   -20 47 52.9   21.4V 574398    G96  C~0Inp      
2010 05  20.32204  15 38 53.95   -20 47 52.1   21.2V 574398    G96  C~0Inp      
2010 05  20.33044  15 38 53.84   -20 47 52.2   21.1V 574398    G96  C~0Inp      
2010 06  07.96905  15 35 57.993  -20 33 43.56  19.9R 574398    809  C~0ITr      
2010 06  08.05913  15 35 57.187  -20 33 39.99  19.8R 574398    809  C~0ITr      
2010 06  08.14352  15 35 56.422  -20 33 35.53  20.2R 574398    809  C~0ITr      
2010 06  09.04337  15 35 48.486  -20 32 56.29  20.5R 574398    809  C~0ITr      
2010 06  12.21961  15 35 20.820  -20 30 35.88        574398    807  C~0Inp      
2010 06  12.27337  15 35 20.345  -20 30 33.04        574398    807  C~0Inp      
2010 07  08.12236  15 32 21.247  -20 13 43.80  21.8R 574398    807  C~0KZp      
2010 07  08.96620  15 32 17.113  -20 13 15.93  21.2R 574398    807  C~0KZp      
2010 07  09.06543  15 32 16.623  -20 13 12.70  21.6R 574398    807  C~0KZp      
2010 08  26.01457  15 32 01.89   -19 59 46.9         574398    807  C~0MvU      
2010 08  27.01228  15 32 06.42   -19 59 47.4         574398    807  C~0MvU      
2010 08  28.00105  15 32 11.09   -19 59 48.8         574398    807  C~0MvU      
2011 05  29.41377  15 55 56.853  -20 17 09.83  21.5G 574398    F51  C~2jgo      
2011 06  06.38695  15 54 39.228  -20 11 30.76  21.6w 574398    F51  C~1vWE      
2011 06  06.40147  15 54 39.059  -20 11 29.97  21.3w 574398    F51  C~1vWE      
2011 06  06.41590  15 54 38.930  -20 11 29.35  21.6w 574398    F51  C~1vWE      
2011 06  06.43034  15 54 38.790  -20 11 28.80  21.4w 574398    F51  C~1vWE      
2012 02  24.64606  16 23 07.102  -20 29 23.09  21.5G 574398    F51  C~2jgo      
2012 02  24.65689  16 23 07.111  -20 29 23.07  20.9G 574398    F51  C~2jgo      
2012 05  15.42800  16 17 24.130  -19 53 02.32  20.8G 574398    F51  C~2jgo      
2012 08  17.25726  16 07 12.985  -19 08 55.68  22.0G 574398    F51  C~2jgo      
2013 05  16.48109  16 37 15.819  -19 09 11.96  21.1G 574398    F51  C~2jgo      
2013 05  16.48240  16 37 15.804  -19 09 11.87  20.9G 574398    F51  C~2jgo      
2013 06  07.41610  16 33 31.331  -18 55 48.67  21.2G 574398    F51  C~2jgo      
2013 06  07.43001  16 33 31.184  -18 55 48.26  20.9G 574398    F51  C~2jgo      
2013 06  07.44658  16 33 31.012  -18 55 47.64  20.9G 574398    F51  C~2jgo      
2013 06  07.46067  16 33 30.861  -18 55 47.20  21.2G 574398    F51  C~2jgo      
2013 06  28.37832  16 30 08.846  -18 44 28.26  21.4G 574398    F51  C~2jgo      
2013 06  28.38012  16 30 08.841  -18 44 27.95  21.5G 574398    F51  C~2jgo      
2013 07  01.31956  16 29 43.613  -18 43 04.49  21.0G 574398    F51  C~2jgo      
2013 07  01.33293  16 29 43.497  -18 43 04.20  21.0G 574398    F51  C~2jgo      
2013 07  01.34628  16 29 43.366  -18 43 03.96  20.7G 574398    F51  C~2jgo      
2013 07  01.35961  16 29 43.262  -18 43 03.69  21.1G 574398    F51  C~2jgo      
2014 04  03.57463  17 02 43.411  -18 39 54.28  21.5w 574398    F51  C~1vWE      
2014 04  03.58696  17 02 43.370  -18 39 53.96  21.6w 574398    F51  C~1vWE      
2014 04  03.59932  17 02 43.324  -18 39 53.52  21.4w 574398    F51  C~1vWE      
2014 04  03.61167  17 02 43.303  -18 39 52.98  21.4w 574398    F51  C~1vWE      
2014 04  08.61277  17 02 27.471  -18 37 15.91  20.9G 574398    F51  C~2jgo      
2014 04  08.62517  17 02 27.409  -18 37 15.47  21.4G 574398    F51  C~2jgo      
2014 05  03.47418  16 59 57.237  -18 23 09.96  21.5G 574398    F51  C~2jgo      
2014 05  21.44494  16 57 12.552  -18 12 36.85  21.2w 574398    F51  C~1vWE      
2014 05  21.45803  16 57 12.425  -18 12 36.40  21.1w 574398    F51  C~1vWE      
2014 05  21.47113  16 57 12.286  -18 12 35.99  21.1w 574398    F51  C~1vWE      
2014 05  21.48419  16 57 12.148  -18 12 35.41  21.1w 574398    F51  C~1vWE      
2014 05  28.43477  16 56 01.160  -18 08 36.97  21.1w 574398    F51  C~1vWE      
2014 05  28.44538  16 56 01.046  -18 08 36.52  21.1w 574398    F51  C~1vWE      
2014 05  28.45600  16 56 00.930  -18 08 36.23  21.2w 574398    F51  C~1vWE      
2014 05  28.46662  16 56 00.824  -18 08 35.85  21.2w 574398    F51  C~1vWE      
2014 05  30.51205  16 55 39.482  -18 07 27.12  21.0G 574398    F51  C~2jgo      
2014 06  18.40008  16 52 22.032  -17 57 35.47  20.6i 574398    F51  C~1vWE      
2014 06  18.41266  16 52 21.894  -17 57 35.10  20.4i 574398    F51  C~1vWE      
2014 06  18.42523  16 52 21.777  -17 57 34.49  20.8i 574398    F51  C~1vWE      
2014 06  26.33742  16 51 03.161  -17 53 58.01  21.2w 574398    F51  C~1vWE      
2014 06  26.34804  16 51 03.042  -17 53 57.68  21.6w 574398    F51  C~1vWE      
2014 06  26.35866  16 51 02.951  -17 53 57.65  21.4w 574398    F51  C~1vWE      
2014 06  26.36931  16 51 02.856  -17 53 57.18  21.4w 574398    F51  C~1vWE      
2014 06  28.33677  16 50 44.081  -17 53 07.06  21.1w 574398    F51  C~1vWE      
2014 06  28.34734  16 50 43.980  -17 53 06.80  21.2w 574398    F51  C~1vWE      
2014 06  28.35794  16 50 43.884  -17 53 06.58  21.1w 574398    F51  C~1vWE      
2014 06  28.36852  16 50 43.780  -17 53 06.26  21.3w 574398    F51  C~1vWE      
2014 07  25.31504  16 47 16.009  -17 44 26.88  21.4w 574398    F51  C~1vWE      
2014 07  25.32573  16 47 15.953  -17 44 26.70  21.4w 574398    F51  C~1vWE      
2014 07  25.33635  16 47 15.888  -17 44 26.57  21.3w 574398    F51  C~1vWE      
2014 07  25.34701  16 47 15.835  -17 44 26.35  21.3w 574398    F51  C~1vWE      
2014 07  31.28170  16 46 45.985  -17 43 18.73        574398    F51  C~2jgo      
2014 07  31.29293  16 46 45.928  -17 43 18.59        574398    F51  C~2jgo      
2014 08  22.25908  16 45 58.012  -17 41 40.86  21.5w 574398    F51  C~1vWE      
2014 08  22.27075  16 45 58.017  -17 41 40.83  21.5w 574398    F51  C~1vWE      
2014 08  22.28240  16 45 58.016  -17 41 40.73  21.6w 574398    F51  C~1vWE      
2014 08  22.29411  16 45 58.014  -17 41 40.77  21.6w 574398    F51  C~1vWE      
2021 07  09.302350 19 32 17.351  -06 19 37.74  20.6G 574398    G37  C~4urg      
2021 07  09.349080 19 32 16.837  -06 19 38.18        574398    G37  C~4urg      

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    -0.09       0.00     0.05
     2   0.0000      0.00    -0.20       0.00     0.07
     3   0.0052      0.00    -0.50       0.00    -0.15
     4   0.0052      0.00    -0.33       0.00    -0.12
     5   0.0052      0.00    -0.14       0.00     0.30
     6   0.0053      0.00    -0.54       0.00    -0.19
     7   0.0563      0.00     0.77       0.00    -0.04
     8   0.0565      0.00     0.88       0.00    -0.44
     9   0.0568      0.00     0.89       0.00     0.27
    10   0.0592      0.00     1.17       0.00    -0.55
    11   0.0679      0.00     0.20       0.00    -0.14
    12   0.0681      0.00     0.06       0.00     0.32
    13   0.1389      0.00    -0.59       0.00    -0.08
    14   0.1412      0.00    -0.25       0.00     0.04
    15   0.1414      0.00    -0.09       0.00     0.05
    16   0.2727      0.00    -0.06       0.00     0.38
    17   0.2754      0.00    -0.16       0.00     0.34
    18   0.2782      0.00    -0.44       0.00     0.09
    19   1.0295      0.00    -0.07       0.00    -0.06
    20   1.0513      0.00     0.21       0.00    -0.17
    21   1.0513      0.00    -0.21       0.00     0.01
    22   1.0514      0.00    -0.03       0.00     0.02
    23   1.0514      0.00    -0.03       0.00    -0.04
    24   1.7720      0.00    -0.10       0.00    -0.16
    25   1.7721      0.00    -0.54       0.00    -0.23
    26   1.9932      0.00     0.16       0.00     0.00
    27   2.2501      0.00    -0.22       0.00    -0.01
    28   2.9954      0.00     0.00       0.00     0.01
    29   2.9954      0.00    -0.02       0.00     0.05
    30   3.0555      0.00     0.04       0.00     0.05
    31   3.0555      0.00     0.03       0.00    -0.03
    32   3.0556      0.00     0.05       0.00     0.00
    33   3.0556      0.00    -0.00       0.00    -0.06
    34   3.1129      0.00    -0.11       0.00    -0.15
    35   3.1129      0.00     0.06       0.00     0.11
    36   3.1209      0.00     0.01       0.00    -0.14
    37   3.1209      0.00    -0.00       0.00    -0.22
    38   3.1210      0.00    -0.24       0.00    -0.35
    39   3.1210      0.00    -0.08       0.00    -0.45
    40   3.8773      0.00     0.08       0.00     0.03
    41   3.8773      0.00    -0.01       0.00    -0.03
    42   3.8773      0.00    -0.18       0.00     0.03
    43   3.8774      0.00     0.03       0.00     0.19
    44   3.8911      0.00     0.31       0.00    -0.09
    45   3.8911      0.00     0.10       0.00    -0.05
    46   3.9591      0.00    -0.10       0.00     0.12
    47   4.0083      0.00     0.02       0.00     0.05
    48   4.0084      0.00     0.12       0.00     0.05
    49   4.0084      0.00     0.04       0.00     0.01
    50   4.0084      0.00    -0.03       0.00     0.13
    51   4.0275      0.00     0.13       0.00     0.00
    52   4.0275      0.00     0.11       0.00     0.10
    53   4.0275      0.00     0.06       0.00     0.03
    54   4.0275      0.00     0.15       0.00     0.05
    55   4.0331      0.00    -0.01       0.00    -0.08
    56   4.0849      0.00    -0.02       0.00    -0.11
    57   4.0849      0.00    -0.12       0.00    -0.11
    58   4.0849      0.00     0.08       0.00     0.14
    59   4.1066      0.00     0.03       0.00     0.19
    60   4.1066      0.00    -0.19       0.00     0.24
    61   4.1066      0.00     0.01       0.00    -0.00
    62   4.1067      0.00     0.16       0.00     0.19
    63   4.1121      0.00     0.03       0.00     0.06
    64   4.1121      0.00     0.04       0.00     0.05
    65   4.1121      0.00     0.14       0.00     0.01
    66   4.1121      0.00     0.11       0.00     0.06
    67   4.1859      0.00    -0.07       0.00     0.03
    68   4.1860      0.00     0.02       0.00     0.07
    69   4.1860      0.00    -0.03       0.00     0.06
    70   4.1860      0.00     0.10       0.00     0.14
    71   4.2023      0.00    -0.04       0.00    -0.03
    72   4.2023      0.00    -0.11       0.00    -0.00
    73   4.2624      0.00    -0.10       0.00     0.01
    74   4.2625      0.00    -0.03       0.00     0.05
    75   4.2625      0.00    -0.04       0.00     0.15
    76   4.2625      0.00    -0.07       0.00     0.12
    77  11.1428      0.00    -0.07       0.00    -0.09
    78  11.1429      0.00     0.10       0.00    -0.19

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.

574398    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        22.817    22.817    22.818
ecceobj         0.316     0.316     0.316
incobj         17.904    17.904    17.904
qmin           15.554    15.554    15.554
qmax           30.496    30.429    30.648
amean          22.977    22.970    22.991
amin           22.810    22.701    22.635
amax           23.189    23.166    23.502
emean           0.311     0.310     0.309
emin            0.299     0.298     0.297
emax            0.320     0.320     0.320
imean          18.918    18.887    19.138
imin           18.779    18.681    18.892
imax           19.038    19.038    19.364
excite_mean     0.449     0.448     0.451
fracstop        0.002     0.002     0.003
cjmean          2.886     2.887     2.885

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        91.4      92.2      94.0
kozaiamp          8.7       9.7      10.6