Orbit Fit and Astrometric record for 22OU15

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: 22OU15    
# Created Fri Nov 22 02:11:16 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     83 observations of     83
# Arc:   9.15y
# First observation: 2014/06/24
#  Last observation: 2023/08/19
# Chi-squared of fit:    58.35 DOF:    160 RMS:  0.15
# Min/Max residuals:    -0.62    0.46
# Exact a, adot, b, bdot, g, gdot:
  3.246684E-05  1.577917E-01 -1.936529E-07 -2.100782E-03  7.721976E-02 -4.029879E-02
# Covariance matrix:
  2.8486E-10 -3.2645E-07  3.6555E-11 -1.7248E-07  3.9327E-08 -4.4826E-07
 -3.2645E-07  4.1967E-04 -4.2498E-08  2.2154E-04 -4.4992E-05  5.7579E-04
  3.6555E-11 -4.2498E-08  5.1985E-12 -2.2452E-08  5.0535E-09 -5.8350E-08
 -1.7248E-07  2.2154E-04 -2.2452E-08  1.1695E-04 -2.3772E-05  3.0396E-04
  3.9327E-08 -4.4992E-05  5.0535E-09 -2.3772E-05  5.4392E-06 -6.1782E-05
 -4.4826E-07  5.7579E-04 -5.8350E-08  3.0396E-04 -6.1782E-05  7.8999E-04
#      lat0       lon0       xBary       yBary       zBary        JD0
  -22.410910 -125.950215   -0.634772   -0.303484   -0.736061  2456832.791515
# Heliocentric elements and errors
Epoch:              2456832.5000  =  2014/06/24
Mean Anomaly:          352.35789 +/-     0.001
Argument of Peri:      304.02654 +/-     0.001
Long of Asc Node:      325.18674 +/-     0.000
Inclination:            21.12540 +/-     0.000
Eccentricity:         0.56838945 +/-    0.0000
Semi-Major Axis:     29.95474101 +/-    0.0000
Time of Perihelion: 2458103.6810 +/-       0.2
Perihelion:          12.92878219 +/-    0.0000
Aphelion:            46.98069983 +/-    0.0000
Period (y)              163.9482 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           -6.98370748 +/-    0.0000
Ecliptic Y          -10.70734922 +/-    0.0000
Ecliptic Z           -4.93710507 +/-    0.0000
Ecliptic XDOT         0.00531594 +/-    0.0000
Ecliptic YDOT        -0.00219600 +/-    0.0000
Ecliptic ZDOT         0.00047599 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   13.70389969 +/-    0.0000
Geocenter to KBO     12.95018603 +/-    0.0000
# Hcoef: 10.64

The following table shows the complete astrometric record for 22OU15. 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 (22OU15) followed by the observatory code and reference code for the source of the astrometry.

2014 06  24.290737 14 58 20.969  -40 21 06.16  21.9G 22OU15    F51  C~5j3s      
2014 06  24.301330 14 58 20.876  -40 21 04.92  21.7G 22OU15    F51  C~5j3s      
2014 06  24.311936 14 58 20.796  -40 21 04.22  21.7G 22OU15    F51  C~5j3s      
2019 06  28.443446 19 22 03.793  -37 05 48.32  21.8G 22OU15    F51  C~5j3s      
2019 06  28.453172 19 22 03.648  -37 05 48.36  21.6G 22OU15    F51  C~5j3s      
2019 06  28.462864 19 22 03.498  -37 05 48.49  21.6G 22OU15    F51  C~5j3s      
2019 06  28.472566 19 22 03.341  -37 05 48.69  21.6G 22OU15    F51  C~5j3s      
2019 07  06.431064 19 19 56.812  -37 06 44.10  21.4G 22OU15    F51  C~5j3s      
2019 07  06.441006 19 19 56.655  -37 06 44.12  21.4G 22OU15    F51  C~5j3s      
2019 07  06.450927 19 19 56.496  -37 06 44.16  21.6G 22OU15    F51  C~5j3s      
2020 05  28.553657 20 10 22.655  -32 08 12.26  22.0G 22OU15    F51  C~5j3s      
2020 05  28.563977 20 10 22.587  -32 08 12.57  21.6G 22OU15    F51  C~5j3s      
2020 05  28.574279 20 10 22.532  -32 08 12.94  21.8G 22OU15    F51  C~5j3s      
2020 05  28.584575 20 10 22.456  -32 08 13.43  21.6G 22OU15    F51  C~5j3s      
2020 06  15.528819 20 07 44.049  -32 17 50.40  21.9G 22OU15    F51  C~5j3s      
2020 06  15.539153 20 07 43.944  -32 17 50.73  21.8G 22OU15    F51  C~5j3s      
2020 06  15.549475 20 07 43.818  -32 17 51.03  21.7G 22OU15    F51  C~5j3s      
2020 06  15.559811 20 07 43.691  -32 17 51.45  21.4G 22OU15    F51  C~5j3s      
2020 06  16.485100 20 07 33.346  -32 18 20.07  21.9G 22OU15    F51  C~5j3s      
2020 06  16.494829 20 07 33.228  -32 18 20.43  21.4G 22OU15    F51  C~5j3s      
2020 06  16.504542 20 07 33.095  -32 18 20.66  22.1G 22OU15    F51  C~5j3s      
2020 06  20.531382 20 06 45.709  -32 20 22.86  21.7G 22OU15    F51  C~5j3s      
2020 06  20.541724 20 06 45.579  -32 20 22.99  21.7G 22OU15    F51  C~5j3t      
2020 06  20.552076 20 06 45.463  -32 20 23.48  21.9G 22OU15    F51  C~5j3t      
2020 06  20.562398 20 06 45.309  -32 20 23.95  22.0G 22OU15    F51  C~5j3t      
2020 06  28.481559 20 05 03.020  -32 24 02.43  22.1G 22OU15    F51  C~5j3t      
2020 06  28.491469 20 05 02.884  -32 24 02.74  22.0G 22OU15    F51  C~5j3t      
2020 06  28.501377 20 05 02.741  -32 24 03.10  21.9G 22OU15    F51  C~5j3t      
2020 06  28.511273 20 05 02.606  -32 24 03.35  22.2G 22OU15    F51  C~5j3t      
2020 06  30.548422 20 04 34.627  -32 24 53.66  21.6G 22OU15    F51  C~5j3t      
2020 07  12.375658 20 01 42.868  -32 28 43.56  21.8G 22OU15    F51  C~5j3t      
2020 07  12.385515 20 01 42.762  -32 28 43.44  21.5G 22OU15    F51  C~5j3t      
2020 07  21.393378 19 59 26.045  -32 30 10.54  21.2G 22OU15    F51  C~5j3t      
2020 07  21.402420 19 59 25.897  -32 30 10.81  21.7G 22OU15    F51  C~5j3t      
2020 07  21.411488 19 59 25.753  -32 30 10.72  21.7G 22OU15    F51  C~5j3t      
2020 08  09.296061 19 54 48.479  -32 28 09.32  21.8G 22OU15    F51  C~5j3t      
2020 08  09.303808 19 54 48.379  -32 28 09.04  21.8G 22OU15    F51  C~5j3t      
2020 08  14.278117 19 53 42.027  -32 26 22.94  21.8G 22OU15    F51  C~5j3t      
2020 08  14.287172 19 53 41.902  -32 26 22.74  21.7G 22OU15    F51  C~5j3t      
2020 08  14.296224 19 53 41.787  -32 26 22.69  21.7G 22OU15    F51  C~5j3t      
2020 08  14.305280 19 53 41.670  -32 26 22.48  21.8G 22OU15    F51  C~5j3t      
2020 08  15.369846 19 53 27.987  -32 25 55.49  21.3G 22OU15    F51  C~5j3t      
2021 06  06.553250 20 44 58.764  -27 02 46.29  21.8G 22OU15    F51  C~5j3t      
2021 07  08.491829 20 39 42.944  -27 17 26.35  21.4G 22OU15    F51  C~5j3t      
2021 07  08.503682 20 39 42.782  -27 17 26.89  21.7G 22OU15    F51  C~5j3t      
2021 07  08.515463 20 39 42.638  -27 17 26.87  21.9G 22OU15    F51  C~5j3t      
2021 08  06.360638 20 33 01.429  -27 26 51.72  21.2G 22OU15    F51  C~5j3t      
2021 08  06.371124 20 33 01.261  -27 26 51.91  21.6G 22OU15    F51  C~5j3t      
2021 08  06.381650 20 33 01.140  -27 26 52.03  21.6G 22OU15    F51  C~5j3t      
2021 08  14.382494 20 31 11.137  -27 27 30.24  21.5G 22OU15    F51  C~5j3t      
2021 08  14.392902 20 31 11.001  -27 27 30.71  21.8G 22OU15    F51  C~5j3t      
2021 08  14.403301 20 31 10.877  -27 27 30.58  21.8G 22OU15    F51  C~5j3t      
2021 08  14.413727 20 31 10.723  -27 27 30.36  21.9G 22OU15    F51  C~5j3t      
2021 09  07.297022 20 26 35.200  -27 22 26.35  21.8G 22OU15    F51  C~5j3t      
2021 09  07.307939 20 26 35.113  -27 22 26.08  22.3G 22OU15    F51  C~5j3t      
2021 09  07.329747 20 26 34.876  -27 22 25.24  22.3G 22OU15    F51  C~5j3t      
2021 09  10.256961 20 26 09.085  -27 21 02.26  21.5G 22OU15    F51  C~5j3t      
2021 09  10.267943 20 26 08.984  -27 21 02.04  21.9G 22OU15    F51  C~5j3t      
2021 09  10.278941 20 26 08.886  -27 21 01.78  21.6G 22OU15    F51  C~5j3t      
2021 10  01.226904 20 24 11.204  -27 06 14.40  22.1G 22OU15    F51  C~5j3t      
2021 10  01.237232 20 24 11.165  -27 06 13.89  22.1G 22OU15    F51  C~5j3t      
2021 10  01.247575 20 24 11.125  -27 06 13.00  22.7G 22OU15    F51  C~5j3t      
2021 10  01.257910 20 24 11.100  -27 06 12.52  22.3G 22OU15    F51  C~5j3t      
2022 07  05.515027 21 11 38.524  -21 57 56.56  22.4G 22OU15    F52  C~5j3t      
2022 07  05.524587 21 11 38.425  -21 57 56.56  22.1G 22OU15    F52  C~5j3t      
2022 07  05.534043 21 11 38.343  -21 57 56.99  22.1G 22OU15    F52  C~5j3t      
2022 07  05.543561 21 11 38.224  -21 57 57.01  22.3G 22OU15    F52  C~5j3t      
2022 07  26.436578 21 07 28.822  -22 07 51.60  22.4w 22OU15    F52  C~5j3t      
2022 07  26.447427 21 07 28.673  -22 07 51.92  22.1w 22OU15    F52  C~5j3t      
2022 07  26.458302 21 07 28.540  -22 07 52.35  22.0w 22OU15    F52  C~5j3t      
2022 07  27.387972 21 07 16.414  -22 08 18.03  21.9G 22OU15    568  C~5j3t      
2022 07  27.389180 21 07 16.398  -22 08 18.08  22.1G 22OU15    568  C~5j3t      
2022 07  27.390390 21 07 16.382  -22 08 18.09  22.0G 22OU15    568  C~5j3t      
2022 08  01.371314 21 06 10.620  -22 10 32.10  21.8G 22OU15    568  C~5j3t      
2022 08  01.372293 21 06 10.609  -22 10 32.15  21.9G 22OU15    568  C~5j3t      
2022 08  01.373285 21 06 10.595  -22 10 32.14  21.9G 22OU15    568  C~5j3t      
2022 09  02.366649 20 59 23.501  -22 19 09.52  21.9w 22OU15    F51  C~5nMv      
2022 09  02.377679 20 59 23.343  -22 19 09.26  22.4w 22OU15    F51  C~5nMv      
2022 09  02.388685 20 59 23.268  -22 19 09.17  22.4w 22OU15    F51  C~5nMv      
2022 09  02.399686 20 59 23.105  -22 19 09.68  22.2w 22OU15    F51  C~5nMv      
2023 08  19.370350 21 29 50.657  -17 09 22.64  22.3w 22OU15    F51  C~77zU      
2023 08  19.380657 21 29 50.521  -17 09 23.11  22.1w 22OU15    F51  C~77zU      
2023 08  19.390971 21 29 50.397  -17 09 23.24  22.2w 22OU15    F51  C~77zU      

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    -0.06       0.00    -0.04
     2   0.0000      0.00    -0.04       0.00     0.18
     3   0.0001      0.00     0.17       0.00    -0.15
     4   5.0107      0.00    -0.23       0.00    -0.03
     5   5.0107      0.00    -0.08       0.00     0.05
     6   5.0107      0.00    -0.01       0.00     0.04
     7   5.0108      0.00    -0.04       0.00    -0.04
     8   5.0326      0.00    -0.06       0.00     0.01
     9   5.0326      0.00     0.04       0.00     0.01
    10   5.0326      0.00     0.11       0.00    -0.01
    11   5.9282      0.00    -0.08       0.00     0.04
    12   5.9282      0.00    -0.07       0.00     0.06
    13   5.9282      0.00     0.13       0.00     0.02
    14   5.9283      0.00     0.01       0.00    -0.14
    15   5.9774      0.00    -0.06       0.00    -0.01
    16   5.9774      0.00     0.14       0.00    -0.02
    17   5.9774      0.00     0.02       0.00     0.01
    18   5.9775      0.00    -0.11       0.00    -0.09
    19   5.9800      0.00     0.15       0.00     0.10
    20   5.9800      0.00     0.08       0.00     0.04
    21   5.9801      0.00    -0.22       0.00     0.12
    22   5.9911      0.00    -0.01       0.00     0.08
    23   5.9911      0.00    -0.02       0.00     0.26
    24   5.9911      0.00     0.18       0.00     0.07
    25   5.9912      0.00    -0.19       0.00    -0.10
    26   6.0128      0.00     0.02       0.00     0.15
    27   6.0129      0.00     0.05       0.00     0.09
    28   6.0129      0.00    -0.03       0.00    -0.02
    29   6.0129      0.00     0.01       0.00    -0.02
    30   6.0185      0.00     0.10       0.00    -0.04
    31   6.0509      0.00    -0.62       0.00    -0.48
    32   6.0509      0.00     0.06       0.00    -0.21
    33   6.0756      0.00     0.14       0.00     0.05
    34   6.0756      0.00     0.03       0.00    -0.17
    35   6.0756      0.00    -0.01       0.00    -0.04
    36   6.1273      0.00    -0.21       0.00     0.10
    37   6.1273      0.00    -0.08       0.00     0.24
    38   6.1410      0.00    -0.03       0.00     0.02
    39   6.1410      0.00    -0.11       0.00     0.01
    40   6.1410      0.00    -0.04       0.00    -0.15
    41   6.1410      0.00    -0.00       0.00    -0.16
    42   6.1440      0.00    -0.04       0.00    -0.07
    43   6.9521      0.00     0.04       0.00     0.13
    44   7.0396      0.00     0.24       0.00    -0.01
    45   7.0396      0.00     0.15       0.00    -0.22
    46   7.0396      0.00     0.33       0.00     0.12
    47   7.1186      0.00     0.11       0.00     0.17
    48   7.1186      0.00    -0.15       0.00     0.08
    49   7.1187      0.00     0.29       0.00     0.05
    50   7.1406      0.00    -0.03       0.00     0.09
    51   7.1406      0.00     0.07       0.00    -0.37
    52   7.1406      0.00     0.35       0.00    -0.24
    53   7.1407      0.00     0.17       0.00    -0.01
    54   7.2060      0.00    -0.17       0.00    -0.01
    55   7.2061      0.00     0.08       0.00    -0.03
    56   7.2061      0.00    -0.37       0.00     0.23
    57   7.2141      0.00     0.05       0.00    -0.00
    58   7.2142      0.00    -0.02       0.00    -0.11
    59   7.2142      0.00    -0.05       0.00    -0.17
    60   7.2716      0.00     0.07       0.00    -0.02
    61   7.2716      0.00    -0.07       0.00    -0.07
    62   7.2716      0.00    -0.23       0.00     0.26
    63   7.2716      0.00    -0.16       0.00     0.18
    64   8.0307      0.00    -0.12       0.00    -0.14
    65   8.0308      0.00    -0.07       0.00     0.12
    66   8.0308      0.00     0.23       0.00    -0.06
    67   8.0308      0.00    -0.02       0.00     0.18
    68   8.0880      0.00    -0.04       0.00    -0.01
    69   8.0880      0.00    -0.11       0.00    -0.02
    70   8.0881      0.00     0.06       0.00    -0.15
    71   8.0906      0.00    -0.07       0.00    -0.04
    72   8.0906      0.00    -0.07       0.00    -0.05
    73   8.0906      0.00    -0.07       0.00    -0.03
    74   8.1043      0.00    -0.10       0.00     0.01
    75   8.1043      0.00    -0.07       0.00    -0.02
    76   8.1043      0.00    -0.07       0.00     0.02
    77   8.1919      0.00     0.17       0.00    -0.01
    78   8.1919      0.00    -0.30       0.00     0.28
    79   8.1919      0.00     0.46       0.00     0.40
    80   8.1919      0.00    -0.10       0.00    -0.08
    81   9.1529      0.00    -0.07       0.00    -0.05
    82   9.1529      0.00    -0.15       0.00    -0.22
    83   9.1529      0.00    -0.04       0.00    -0.05

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.

22OU15    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        29.807    29.807    29.808
ecceobj         0.567     0.567     0.567
incobj         21.151    21.151    21.151
qmin           12.596    12.233    12.182
qmax           52.182    50.346    51.761
amean          31.446    30.548    30.382
amin           29.565    29.328    29.404
amax           32.642    31.418    32.150
emean           0.590     0.590     0.586
emin            0.563     0.563     0.563
emax            0.607     0.602     0.612
imean          22.314    21.967    21.298
imin           21.520    21.433    20.265
imax           22.929    22.594    22.498
excite_mean     0.702     0.698     0.690
fracstop        0.036     0.019     0.031
cjmean          2.485     2.493     2.508

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       138.3     173.8     168.7
kozaiamp        179.7     179.4     179.3