Orbit Fit and Astrometric record for 19AJ16

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: 19AJ16    
# Created Fri Dec  3 02:14:00 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     63 observations of     63
# Arc:   7.31y
# First observation: 2013/11/27
#  Last observation: 2021/03/19
# Chi-squared of fit:    74.33 DOF:    120 RMS:  0.19
# Min/Max residuals:    -0.94    0.61
# Exact a, adot, b, bdot, g, gdot:
  2.677789E-05  1.303344E-01 -2.149975E-06 -1.369230E-02  8.182281E-02 -1.745854E-02
# Covariance matrix:
  6.9664E-13 -3.7173E-13 -3.8753E-14  2.8499E-14  1.5251E-13 -2.6933E-13
 -3.7173E-13  1.3456E-12  1.1096E-13 -9.4640E-14  1.9232E-12  8.8929E-13
 -3.8753E-14  1.1096E-13  3.7641E-13 -2.9416E-13  1.6772E-13  1.0841E-13
  2.8499E-14 -9.4640E-14 -2.9416E-13  2.6551E-13 -1.4736E-13 -8.9723E-14
  1.5251E-13  1.9232E-12  1.6772E-13 -1.4736E-13  3.6877E-12  1.3833E-12
 -2.6933E-13  8.8929E-13  1.0841E-13 -8.9723E-14  1.3833E-12  8.4401E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    9.571467   92.955459    0.458575    0.145046   -0.859485  2456624.091668
# Heliocentric elements and errors
Epoch:              2456624.5000  =  2013/11/28
Mean Anomaly:          240.64590 +/-     0.001
Argument of Peri:      260.33088 +/-     0.001
Long of Asc Node:      327.79710 +/-     0.001
Inclination:            10.62646 +/-     0.000
Eccentricity:         0.21031450 +/-    0.0000
Semi-Major Axis:     11.56890178 +/-    0.0000
Time of Perihelion: 2461389.5939 +/-       0.1
Perihelion:           9.13579404 +/-    0.0000
Aphelion:            14.00200952 +/-    0.0000
Period (y)               39.3502 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           -0.20944459 +/-    0.0000
Ecliptic Y           12.93182737 +/-    0.0000
Ecliptic Z            2.03211665 +/-    0.0000
Ecliptic XDOT        -0.00433566 +/-    0.0000
Ecliptic YDOT        -0.00072598 +/-    0.0000
Ecliptic ZDOT        -0.00054877 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   13.09224442 +/-    0.0000
Geocenter to KBO     12.22160354 +/-    0.0000
# Hcoef: 11.65

The following table shows the complete astrometric record for 19AJ16. 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 (19AJ16) followed by the observatory code and reference code for the source of the astrometry.

2013 11  27.59089  06 13 53.888  +32 58 30.43  22.4G 19AJ16    F51  C~36tA      
2013 11  27.60093  06 13 53.750  +32 58 30.84  22.8G 19AJ16    F51  C~36tA      
2015 01  14.42617  06 36 31.177  +31 51 44.06  22.3G 19AJ16    F51  C~36tA      
2015 01  14.43906  06 36 30.961  +31 51 43.84  22.0G 19AJ16    F51  C~36tA      
2015 01  14.45197  06 36 30.727  +31 51 43.94  22.3G 19AJ16    F51  C~36tA      
2015 01  14.46478  06 36 30.506  +31 51 43.80  22.7G 19AJ16    F51  C~36tA      
2015 01  16.43672  06 35 57.146  +31 51 26.68  22.5G 19AJ16    F51  C~36tA      
2015 01  16.44835  06 35 56.939  +31 51 26.49  22.4G 19AJ16    F51  C~36tA      
2015 01  16.46000  06 35 56.738  +31 51 25.84  22.9G 19AJ16    F51  C~36tA      
2015 01  16.47153  06 35 56.558  +31 51 25.31  23.3G 19AJ16    F51  C~36tA      
2015 12  02.64464  07 25 03.399  +29 44 04.75  22.5G 19AJ16    F51  C~36tB      
2015 12  04.62987  07 24 38.867  +29 45 18.98  22.5G 19AJ16    F51  C~36tB      
2016 02  09.26306  07 06 35.120  +30 04 09.49  22.4G 19AJ16    F51  C~36tB      
2016 02  09.27724  07 06 34.939  +30 04 09.53  22.3G 19AJ16    F51  C~36tB      
2016 02  09.29147  07 06 34.735  +30 04 08.97  23.1G 19AJ16    F51  C~36tB      
2016 02  09.30577  07 06 34.515  +30 04 08.62  21.9G 19AJ16    F51  C~36tB      
2017 01  16.51210  07 50 17.206  +27 31 34.03  21.6G 19AJ16    F51  C~36tB      
2017 01  28.44039  07 46 47.791  +27 36 28.60  22.2G 19AJ16    F51  C~36tB      
2017 01  28.45268  07 46 47.574  +27 36 28.67  22.2G 19AJ16    F51  C~36tB      
2017 01  28.46501  07 46 47.353  +27 36 29.08  22.6G 19AJ16    F51  C~36tB      
2017 01  28.47736  07 46 47.147  +27 36 29.21  22.8G 19AJ16    F51  C~36tB      
2017 12  12.48302  08 36 45.846  +23 41 30.21  21.7G 19AJ16    F51  C~36tB      
2017 12  12.49515  08 36 45.710  +23 41 31.11  22.0G 19AJ16    F51  C~36tB      
2017 12  12.50743  08 36 45.606  +23 41 31.27  22.3G 19AJ16    F51  C~36tB      
2017 12  12.51957  08 36 45.461  +23 41 32.18  22.8G 19AJ16    F51  C~36tB      
2017 12  23.58811  08 34 37.606  +23 49 33.24  22.7G 19AJ16    F51  C~36tB      
2017 12  23.60006  08 34 37.423  +23 49 33.51  23.3G 19AJ16    F51  C~36tB      
2017 12  23.61200  08 34 37.269  +23 49 33.76  23.2G 19AJ16    F51  C~36tB      
2017 12  23.62397  08 34 37.095  +23 49 34.58  22.9G 19AJ16    F51  C~36tB      
2018 01  16.34915  08 28 28.713  +24 08 33.73  22.0G 19AJ16    F51  C~36tB      
2018 01  16.36078  08 28 28.528  +24 08 34.27  22.0G 19AJ16    F51  C~36tB      
2018 01  16.37241  08 28 28.338  +24 08 34.67  21.3G 19AJ16    F51  C~36tB      
2018 01  16.38409  08 28 28.091  +24 08 35.20  21.6G 19AJ16    F51  C~36tB      
2019 01  14.57890  09 07 31.015  +19 52 56.67  22.5w 19AJ16    F51  C~2yhL      
2019 01  14.59256  09 07 30.789  +19 52 57.63  22.4w 19AJ16    F51  C~2yhL      
2019 01  14.60617  09 07 30.555  +19 52 58.17  22.3w 19AJ16    F51  C~2yhL      
2019 01  14.61980  09 07 30.350  +19 52 59.08  22.1w 19AJ16    F51  C~2yhL      
2019 02  04.344233 09 01 41.481  +20 12 10.04  21.7G 19AJ16    568  C~2yhL      
2019 02  04.345242 09 01 41.464  +20 12 10.09  21.7G 19AJ16    568  C~2yhL      
2019 02  04.346248 09 01 41.446  +20 12 10.16  21.7G 19AJ16    568  C~2yhL      
2019 02  04.347275 09 01 41.428  +20 12 10.22  21.7G 19AJ16    568  C~2yhL      
2019 02  04.358683 09 01 41.230  +20 12 10.75  22.0G 19AJ16    F51  C~2yhL      
2019 02  04.371840 09 01 40.994  +20 12 11.54  21.8G 19AJ16    F51  C~2yhL      
2019 02  04.385016 09 01 40.758  +20 12 12.23  22.1G 19AJ16    F51  C~2yhL      
2019 02  04.398193 09 01 40.521  +20 12 12.98  22.0G 19AJ16    F51  C~2yhL      
2019 02  11.15369  08 59 43.87   +20 17 56.3   22.2G 19AJ16    V06  C~2yhL      
2019 02  11.16426  08 59 43.68   +20 17 57.1   21.5G 19AJ16    V06  C~2yhL      
2019 02  11.17748  08 59 43.44   +20 17 57.6   22.3G 19AJ16    V06  C~2yhL      
2019 02  11.18610  08 59 43.30   +20 17 58.1   22.0G 19AJ16    V06  C~2yhL      
2019 04  05.149010 08 49 20.511  +20 34 27.89  22.6G 19AJ16    G37  C~34cM      
2019 04  05.223200 08 49 20.212  +20 34 26.33        19AJ16    G37  C~34cM      
2020 01  21.43826  09 44 56.017  +14 54 49.22  22.1w 19AJ16    F52  C~3d1P      
2020 01  21.44884  09 44 55.855  +14 54 50.13  21.8w 19AJ16    F52  C~3d1P      
2020 01  21.45955  09 44 55.702  +14 54 50.58  21.8w 19AJ16    F52  C~3d1P      
2020 01  21.47036  09 44 55.526  +14 54 51.07  22.0w 19AJ16    F52  C~3d1P      
2021 01  15.48895  10 26 05.656  +08 58 15.70  21.7w 19AJ16    F51  C~4UQN      
2021 01  15.50066  10 26 05.491  +08 58 16.25  21.9w 19AJ16    F51  C~4UQN      
2021 01  15.51257  10 26 05.376  +08 58 16.84  21.7w 19AJ16    F51  C~4UQN      
2021 01  15.52455  10 26 05.229  +08 58 17.27  21.7w 19AJ16    F51  C~4UQN      
2021 03  19.292792 10 09 51.748  +10 05 46.33  21.5w 19AJ16    F51  C~4gZw      
2021 03  19.304435 10 09 51.579  +10 05 47.16  21.6w 19AJ16    F51  C~4gZw      
2021 03  19.316091 10 09 51.396  +10 05 47.92  21.8w 19AJ16    F51  C~4gZw      
2021 03  19.327839 10 09 51.241  +10 05 48.26  21.9w 19AJ16    F51  C~4gZw      

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    -0.39       0.00    -0.09
     2   0.0000      0.00    -0.17       0.00     0.14
     3   1.1303      0.00    -0.11       0.00     0.05
     4   1.1303      0.00     0.01       0.00    -0.06
     5   1.1304      0.00    -0.13       0.00     0.15
     6   1.1304      0.00    -0.11       0.00     0.12
     7   1.1358      0.00     0.22       0.00     0.06
     8   1.1358      0.00     0.11       0.00    -0.00
     9   1.1358      0.00     0.08       0.00    -0.53
    10   1.1359      0.00     0.34       0.00    -0.94
    11   2.0125      0.00     0.03       0.00    -0.23
    12   2.0179      0.00     0.61       0.00     0.30
    13   2.2003      0.00    -0.19       0.00    -0.03
    14   2.2004      0.00     0.07       0.00     0.19
    15   2.2004      0.00    -0.01       0.00    -0.19
    16   2.2005      0.00    -0.30       0.00    -0.36
    17   3.1374      0.00    -0.15       0.00     0.37
    18   3.1700      0.00     0.04       0.00     0.09
    19   3.1701      0.00     0.01       0.00    -0.07
    20   3.1701      0.00    -0.08       0.00     0.11
    21   3.1701      0.00     0.06       0.00     0.02
    22   4.0408      0.00    -0.06       0.00    -0.08
    23   4.0408      0.00    -0.24       0.00     0.33
    24   4.0408      0.00     0.08       0.00    -0.01
    25   4.0409      0.00    -0.24       0.00     0.41
    26   4.0712      0.00     0.39       0.00     0.43
    27   4.0712      0.00     0.05       0.00     0.15
    28   4.0712      0.00     0.14       0.00    -0.14
    29   4.0713      0.00    -0.06       0.00     0.14
    30   4.1362      0.00    -0.06       0.00     0.19
    31   4.1363      0.00     0.22       0.00     0.18
    32   4.1363      0.00     0.43       0.00     0.02
    33   4.1363      0.00    -0.20       0.00    -0.00
    34   5.1307      0.00     0.19       0.00    -0.12
    35   5.1307      0.00     0.07       0.00     0.10
    36   5.1308      0.00    -0.18       0.00    -0.11
    37   5.1308      0.00     0.01       0.00     0.06
    38   5.1876      0.00    -0.05       0.00    -0.05
    39   5.1876      0.00    -0.04       0.00    -0.05
    40   5.1876      0.00    -0.05       0.00    -0.04
    41   5.1876      0.00    -0.04       0.00    -0.03
    42   5.1876      0.00     0.01       0.00    -0.10
    43   5.1876      0.00    -0.04       0.00    -0.02
    44   5.1877      0.00    -0.08       0.00    -0.03
    45   5.1877      0.00    -0.13       0.00     0.01
    46   5.2062      0.00     0.22       0.00    -0.10
    47   5.2062      0.00     0.12       0.00     0.18
    48   5.2063      0.00    -0.04       0.00     0.02
    49   5.2063      0.00     0.10       0.00     0.09
    50   5.3513      0.00    -0.00       0.00     0.12
    51   5.3515      0.00     0.06       0.00    -0.12
    52   6.1488      0.00    -0.06       0.00    -0.14
    53   6.1488      0.00    -0.05       0.00     0.15
    54   6.1489      0.00     0.13       0.00    -0.04
    55   6.1489      0.00    -0.02       0.00    -0.18
    56   7.1346      0.00     0.09       0.00    -0.21
    57   7.1346      0.00    -0.34       0.00    -0.13
    58   7.1346      0.00     0.01       0.00    -0.01
    59   7.1347      0.00    -0.10       0.00    -0.05
    60   7.3065      0.00     0.04       0.00    -0.09
    61   7.3065      0.00     0.05       0.00     0.04
    62   7.3066      0.00    -0.14       0.00     0.10
    63   7.3066      0.00     0.11       0.00    -0.26

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.

19AJ16    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        11.575    11.575    11.575
ecceobj         0.209     0.209     0.209
incobj         10.627    10.627    10.627
qmin            8.933     7.443     7.794
qmax           24.242    15.228    14.483
amean          12.739    11.410    11.182
amin           11.398     9.890    10.028
amax           16.726    12.033    11.752
emean           0.277     0.219     0.222
emin            0.209     0.168     0.186
emax            0.449     0.269     0.250
imean           9.982    11.241    10.764
imin            5.129     5.012     6.456
imax           11.877    12.558    12.651
excite_mean     0.334     0.295     0.292
fracstop        0.002     0.007     0.002
cjmean          3.617     3.822     3.866

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       215.3     156.9     255.9
kozaiamp        175.3     178.3     170.3