Orbit Fit and Astrometric record for 19GN22

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: 19GN22    
# Created Mon Dec  6 02:14:03 2021
# Orbit generated from Bernstein formalism
# Fitting     63 observations of     64
# Arc:   4.20y
# First observation: 2015/03/23
#  Last observation: 2019/06/06
Preliminary a, adot, b, bdot, g, gdot:
  -0.008454   0.093459   0.001291  -0.012820   0.077309   0.000000
# Chi-squared of fit:   152.57 DOF:    120 RMS:  0.28
# Min/Max residuals:    -0.86    0.64
# Exact a, adot, b, bdot, g, gdot:
  2.098971E-05  7.496120E-02 -2.968954E-06 -1.042397E-02  5.615309E-02 -3.594551E-02
# Covariance matrix:
  2.0524E-13 -1.3598E-13 -8.1047E-15  1.3910E-14 -4.6686E-14 -2.3465E-13
 -1.3598E-13  1.9274E-13  1.5085E-14 -2.5864E-14  1.0282E-13  4.3656E-13
 -8.1047E-15  1.5085E-14  1.5484E-13 -4.1657E-14  6.5560E-15  3.6896E-14
  1.3910E-14 -2.5864E-14 -4.1657E-14  1.5112E-14 -1.0872E-14 -6.3369E-14
 -4.6686E-14  1.0282E-13  6.5560E-15 -1.0872E-14  2.6322E-13  1.8704E-13
 -2.3465E-13  4.3656E-13  3.6896E-14 -6.3369E-14  1.8704E-13  1.0685E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    4.593474  178.464375   -0.067092    0.079509   -0.988106  2457104.979188
# Heliocentric elements and errors
Epoch:              2457100.5000  =  2015/03/19
Mean Anomaly:          302.57064 +/-     0.003
Argument of Peri:      258.92393 +/-     0.003
Long of Asc Node:       26.96016 +/-     0.000
Inclination:             9.11955 +/-     0.000
Eccentricity:         0.42782508 +/-    0.0000
Semi-Major Axis:     20.04827743 +/-    0.0008
Time of Perihelion: 2462331.0279 +/-       0.1
Perihelion:          11.47112144 +/-    0.0005
Aphelion:            28.62543342 +/-    0.0011
Period (y)               89.7685 +/-      0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -18.74078031 +/-    0.0002
Ecliptic Y            0.43523658 +/-    0.0000
Ecliptic Z            1.42616882 +/-    0.0000
Ecliptic XDOT         0.00160433 +/-    0.0000
Ecliptic YDOT        -0.00370509 +/-    0.0000
Ecliptic ZDOT        -0.00064688 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   18.80000625 +/-    0.0002
Geocenter to KBO     17.80845923 +/-    0.0002
# Hcoef: 11.16

The following table shows the complete astrometric record for 19GN22. 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 (19GN22) followed by the observatory code and reference code for the source of the astrometry.

2015 03  23.47841  12 01 41.402  +04 49 27.90  23.3G 19GN22    F51  C~36tJ      
2015 03  23.49027  12 01 41.275  +04 49 28.45  23.6G 19GN22    F51  C~36tJ      
2015 03  23.49097  12 01 41.297  +04 49 28.54  24.0G 19GN22    F51  C~36tJ      
2015 03  23.50283  12 01 41.188  +04 49 29.17  23.7G 19GN22    F51  C~36tJ      
2015 03  23.50354  12 01 41.138  +04 49 29.25  23.9G 19GN22    F51  C~36tJ      
2015 03  23.51541  12 01 41.017  +04 49 30.49  22.4G 19GN22    F51  C~36tJ      
2015 03  23.51613  12 01 41.014  +04 49 30.01  23.2G 19GN22    F51  C~36tJ      
2017 04  03.47929  12 31 38.759  +00 06 02.84  23.5G 19GN22    F51  C~36tJ      
2017 04  03.49322  12 31 38.597  +00 06 03.24  23.3G 19GN22    F51  C~36tJ      
2017 04  03.50716  12 31 38.463  +00 06 03.56  22.7G 19GN22    F51  C~36tJ      
2017 04  16.30618  12 29 29.459  +00 17 38.88  22.8G 19GN22    F51  C~36tJ      
2017 04  16.31825  12 29 29.320  +00 17 39.59  23.5G 19GN22    F51  C~36tJ      
2017 04  16.34237  12 29 29.044  +00 17 40.79  23.2G 19GN22    F51  C~36tJ      
2017 04  20.38098  12 28 50.398  +00 20 59.39  22.9G 19GN22    F51  C~36tJ      
2017 04  20.40234  12 28 50.229  +00 20 59.67  23.9G 19GN22    F51  C~36tJ      
2018 03  18.40916  12 52 22.506  -02 55 36.46  23.4G 19GN22    F51  C~36tJ      
2018 03  18.42098  12 52 22.375  -02 55 35.36  23.8G 19GN22    F51  C~36tJ      
2018 03  18.43283  12 52 22.249  -02 55 34.51  23.1G 19GN22    F51  C~36tJ      
2018 03  18.44469  12 52 22.159  -02 55 34.50  23.0G 19GN22    F51  C~36tJ      
2019 04  02.423538 13 09 19.892  -05 40 02.02  22.7G 19GN22    F51  C~35cv      
2019 04  02.42354  13 09 19.891  -05 40 02.02  22.7G 19GN22    F51  C~36tJ      
2019 04  02.436369 13 09 19.749  -05 40 01.12  22.7G 19GN22    F51  C~35cv      
2019 04  02.449200 13 09 19.612  -05 40 00.39  22.3G 19GN22    F51  C~35cv      
2019 04  02.462066 13 09 19.501  -05 39 59.22  22.8G 19GN22    F51  C~35cv      
2019 04  05.10929  13 08 50.17   -05 37 24.6   23.9R 19GN22    W93  C~35cv      
2019 04  05.11171  13 08 50.16   -05 37 23.2         19GN22    W93  C~39pv      
2019 04  05.13771  13 08 49.88   -05 37 22.2   23.0R 19GN22    W93  C~35cv      
2019 04  05.13999  13 08 49.85   -05 37 21.9   23.0R 19GN22    W93  C~39pv      
2019 04  05.16730  13 08 49.56   -05 37 20.8   22.9R 19GN22    W93  C~35cv      
2019 04  05.16734  13 08 49.54   -05 37 20.3   22.9R 19GN22    W93  C~39pv      
2019 04  07.10344  13 08 28.03   -05 35 25.9   23.1R 19GN22    W93  C~35cv      
2019 04  07.12915  13 08 27.72   -05 35 25.0   23.2R 19GN22    W93  C~39pv      
2019 04  07.15910  13 08 27.42   -05 35 23.5   22.9R 19GN22    W93  C~35cv      
2019 04  07.18215  13 08 27.16   -05 35 21.9   23.1R 19GN22    W93  C~35cv      
2019 04  07.18463  13 08 27.12   -05 35 22.0   22.8R 19GN22    W93  C~39pv      
2019 04  07.426768 13 08 24.392  -05 35 08.72  23.4G 19GN22    F51  C~35cv      
2019 04  07.437229 13 08 24.277  -05 35 07.86  24.0G 19GN22    F51  C~35cv      
2019 04  07.45817  13 08 24.055  -05 35 06.85  23.4G 19GN22    F51  C~36tJ      
2019 04  09.394994 13 08 02.473  -05 33 12.85  22.6G 19GN22    F51  C~35cv      
2019 04  09.406653 13 08 02.386  -05 33 12.63  22.9G 19GN22    F51  C~35cv      
2019 04  09.41833  13 08 02.234  -05 33 11.49  22.6G 19GN22    F51  C~36tJ      
2019 04  09.418333 13 08 02.259  -05 33 11.68  22.6G 19GN22    F51  C~35cv      
2019 04  11.10275  13 07 43.48   -05 31 32.3   23.2R 19GN22    W93  C~35cv      
2019 04  11.16231  13 07 42.82   -05 31 29.2   22.7R 19GN22    W93  C~35cv      
2019 04  13.11243  13 07 21.10   -05 29 35.5   23.4R 19GN22    W93  C~35cv      
2019 04  13.17106  13 07 20.47   -05 29 32.5   22.8R 19GN22    W93  C~35cv      
2019 04  24.28367  13 05 19.42   -05 19 10.3   23.0R 19GN22    695  C~35cv      
2019 04  24.30121  13 05 19.24   -05 19 08.8   22.7R 19GN22    695  C~35cv      
2019 04  24.34334  13 05 18.791  -05 19 06.90  22.7G 19GN22    F51  C~36tJ      
2019 04  24.35496  13 05 18.674  -05 19 06.59  23.0G 19GN22    F51  C~36tJ      
2019 04  24.36656  13 05 18.546  -05 19 05.77  23.3G 19GN22    F51  C~36tJ      
2019 04  26.31708  13 04 58.02   -05 17 22.3   23.0R 19GN22    695  C~35cv      
2019 04  26.33906  13 04 57.80   -05 17 20.9   22.1R 19GN22    695  C~35cv      
2019 04  26.36104  13 04 57.56   -05 17 19.9   22.4R 19GN22    695  C~35cv      
2019 05  04.39551  13 03 36.657  -05 10 38.68  21.8G 19GN22    F51  C~36tJ      
2019 05  07.30154  13 03 09.125  -05 08 25.29  23.2G 19GN22    F51  C~36tJ      
2019 05  07.32341  13 03 08.917  -05 08 24.48  23.4G 19GN22    F51  C~36tJ      
2019 05  07.33434  13 03 08.813  -05 08 23.88  22.9G 19GN22    F51  C~36tJ      
2019 05  10.38570  13 02 41.017  -05 06 11.48  23.0G 19GN22    F51  C~36tJ      
2019 05  21.25851  13 01 13.360  -04 59 36.24  23.3G 19GN22    F51  C~36tJ      
2019 05  21.28095  13 01 13.207  -04 59 35.29  23.1G 19GN22    F51  C~36tJ      
2019 05  21.29292  13 01 13.124  -04 59 35.25  21.6G 19GN22    F51  C~36tJ      
2019 06  06.180920 12 59 42.506  -04 54 00.56  23.4G 19GN22    G37  C~36tJ      
2019 06  06.248640 12 59 42.216  -04 53 59.62        19GN22    G37  C~36tJ      

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     0.02       0.00     0.01
     2   0.0000     -1.96    -0.04      -0.25    -0.15
     3   0.0000     -1.69     0.34      -0.04     0.07
     4   0.0001     -3.44     0.49      -0.11     0.09
     5   0.0001     -4.16    -0.12      -0.34    -0.13
     6   0.0001     -6.31    -0.38       0.08     0.38
     7   0.0001     -6.16    -0.11      -0.38    -0.08
     8   2.0315  31747.17    -0.22   -4767.98     0.33
     9   2.0315  31744.73    -0.27   -4768.60    -0.14
    10   2.0316  31742.71     0.10   -4769.12    -0.50
    11   2.0666  29645.98     0.43   -4913.17     0.24
    12   2.0666  29643.74     0.12   -4913.36     0.22
    13   2.0667  29639.38    -0.39   -4913.93    -0.03
    14   2.0778  29016.45    -0.70   -4965.96     0.05
    15   2.0778  29013.97     0.11   -4966.73    -0.41
    16   2.9868  54173.83     0.32   -7334.63    -0.28
    17   2.9868  54171.44     0.00   -7334.40     0.06
    18   2.9869  54169.22    -0.13   -7334.37     0.20
    19   2.9869  54167.90     0.64   -7334.92    -0.24
    20   4.0272  73834.65    -0.18  -10559.19    -0.22
    21   4.0272  73834.64    -0.20  -10559.20    -0.23
    22   4.0273  73832.03    -0.23  -10559.19    -0.07
    23   4.0273  73829.59    -0.11  -10559.32    -0.04
    24   4.0273  73827.34     0.22  -10558.86     0.58
    25   4.0346  73304.90    -0.14  -10588.51    -0.86
    26   4.0346  73304.10    -0.45  -10587.20     0.48
    27   4.0347  73299.34    -0.00  -10587.95     0.05
    28   4.0347  73298.74    -0.14  -10587.84     0.18
    29   4.0347  73293.77     0.37  -10588.55    -0.19
    30   4.0347  73293.24    -0.16  -10588.19     0.18
    31   4.0400  72910.16 (  -0.41) -10608.98 (   0.92)
    32   4.0401  72904.99    -0.43  -10610.02     0.21
    33   4.0402  72899.69     0.30  -10610.40     0.20
    34   4.0403  72894.96     0.20  -10610.44     0.45
    35   4.0403  72894.39     0.13  -10610.78     0.14
    36   4.0409  72846.40    -0.15  -10614.63    -0.48
    37   4.0410  72844.24    -0.20  -10614.50    -0.21
    38   4.0410  72840.37     0.14  -10614.88    -0.33
    39   4.0463  72456.88    -0.36  -10636.56     0.03
    40   4.0463  72455.44     0.55  -10636.88    -0.14
    41   4.0464  72452.59     0.05  -10636.70     0.19
    42   4.0464  72453.06     0.52  -10636.73     0.16
    43   4.0510  72119.64    -0.20  -10655.44     0.44
    44   4.0512  72108.11     0.20  -10656.48     0.17
    45   4.0565  71723.45    -0.71  -10679.38     0.27
    46   4.0567  71712.44    -0.03  -10680.33     0.09
    47   4.0871  69581.66     0.12  -10819.76    -0.05
    48   4.0871  69578.24     0.01  -10819.41     0.55
    49   4.0872  69570.55    -0.09  -10820.32    -0.02
    50   4.0873  69568.63     0.18  -10820.74    -0.27
    51   4.0873  69566.31     0.05  -10820.73    -0.09
    52   4.0926  69207.21     0.13  -10846.46    -0.11
    53   4.0927  69203.23     0.22  -10846.45     0.21
    54   4.0928  69199.13     0.19  -10846.95     0.01
    55   4.1148  67790.24     0.08  -10955.02    -0.08
    56   4.1227  67313.46    -0.04  -10994.93     0.04
    57   4.1228  67309.95     0.03  -10995.43    -0.12
    58   4.1228  67308.10    -0.02  -10995.48    -0.01
    59   4.1312  66828.40    -0.70  -11038.02     0.22
    60   4.1609  65329.68    -0.03  -11193.99    -0.31
    61   4.1610  65326.95     0.05  -11194.01     0.02
    62   4.1610  65325.69     0.28  -11194.48    -0.26
    63   4.2045  63815.60     0.19  -11427.37    -0.32
    64   4.2047  63810.83     0.11  -11428.24    -0.13

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.

19GN22    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        19.944    19.945    19.943
ecceobj         0.428     0.428     0.428
incobj          9.136     9.136     9.136
qmin           11.157    10.451    10.747
qmax           29.181    33.995    31.650
amean          19.889    20.150    20.107
amin           19.471    19.178    19.451
amax           20.218    22.270    21.286
emean           0.433     0.455     0.449
emin            0.418     0.418     0.418
emax            0.446     0.526     0.492
imean           9.047     9.514     9.309
imin            8.997     8.511     8.368
imax            9.121    12.156    11.111
excite_mean     0.460     0.484     0.478
fracstop        0.001     0.007     0.009
cjmean          2.958     2.931     2.938

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       267.8     181.1     204.4
kozaiamp          9.1     177.5     177.9