Orbit Fit and Astrometric record for 20KN53

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: 20KN53    
# Created Tue Apr  1 01:11:19 2025
# Orbit generated from Bernstein formalism
# Fitting     30 observations of     30
# Arc:  77.97d
# First observation: 2020/05/28
#  Last observation: 2020/08/14
Preliminary a, adot, b, bdot, g, gdot:
   0.000004   0.019959   0.000006   0.004161   0.024676   0.000000
# Chi-squared of fit:     0.43 DOF:     54 RMS:  0.02
# Min/Max residuals:    -0.04    0.06
# Exact a, adot, b, bdot, g, gdot:
  1.607339E-05  2.628503E-02  2.707516E-06  4.150003E-03  2.573008E-02 -1.205076E-03
# Covariance matrix:
  1.9628E-13 -1.6422E-12 -4.3402E-15  1.1956E-13  4.2107E-13  1.2278E-10
 -1.6422E-12  8.5622E-08 -7.4293E-11  1.9701E-10  1.5959E-08  2.5224E-07
 -4.3402E-15 -7.4293E-11  1.7139E-13 -9.2018E-13 -1.3882E-11 -2.2606E-10
  1.1956E-13  1.9701E-10 -9.2018E-13  1.0122E-11  3.7522E-11  7.5063E-10
  4.2107E-13  1.5959E-08 -1.3882E-11  3.7522E-11  2.9787E-09  4.7844E-08
  1.2278E-10  2.5224E-07 -2.2606E-10  7.5063E-10  4.7844E-08  9.1870E-07
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.143672  -72.806065    0.652901    0.028648   -0.768768  2458997.947541
# Heliocentric elements and errors
Epoch:              2458990.5000  =  2020/05/21
Mean Anomaly:          326.97463 +/-    17.376
Argument of Peri:       53.43834 +/-    21.970
Long of Asc Node:      273.19096 +/-     0.144
Inclination:             9.22154 +/-     0.097
Eccentricity:         0.10334939 +/-    0.0137
Semi-Major Axis:     43.23838307 +/-    0.5497
Time of Perihelion: 2468517.3163 +/-    5009.2
Perihelion:          38.76972263 +/-    0.7718
Aphelion:            47.70704352 +/-    0.8489
Period (y)              284.3232 +/-      5.42
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           11.09003399 +/-    0.0244
Ecliptic Y          -38.03692123 +/-    0.0787
Ecliptic Z            1.45393793 +/-    0.0031
Ecliptic XDOT         0.00263726 +/-    0.0001
Ecliptic YDOT         0.00096851 +/-    0.0001
Ecliptic ZDOT         0.00043625 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.64732231 +/-    0.0758
Geocenter to KBO     38.86502461 +/-    0.0824
# Hcoef:  9.03

The following table shows the complete astrometric record for 20KN53. 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 (20KN53) followed by the observatory code and reference code for the source of the astrometry.

2020 05  28.44674  19 13 23.328  -20 12 25.81  24.9r 20KN53    266  C~6c5X      
2020 05  28.50129  19 13 23.114  -20 12 25.95  24.9r 20KN53    266  C~6c5X      
2020 05  28.55756  19 13 22.894  -20 12 26.08  24.9r 20KN53    266  C~6c5X      
2020 05  30.43935  19 13 15.572  -20 12 30.55  25.0r 20KN53    266  C~6c5X      
2020 05  30.53044  19 13 15.203  -20 12 30.79  25.0r 20KN53    266  C~6c5X      
2020 05  30.61862  19 13 14.845  -20 12 31.01  25.0r 20KN53    266  C~6c5X      
2020 06  01.43269  19 13 07.545  -20 12 35.88  25.6r 20KN53    266  C~6c5X      
2020 06  01.47325  19 13 07.375  -20 12 36.01  25.6r 20KN53    266  C~6c5X      
2020 06  01.60571  19 13 06.820  -20 12 36.39  25.6r 20KN53    266  C~6c5X      
2020 06  20.45583  19 11 39.764  -20 13 55.27  24.7r 20KN53    266  C~6c5X      
2020 06  20.52860  19 11 39.390  -20 13 55.66  24.7r 20KN53    266  C~6c5X      
2020 06  20.62233  19 11 38.910  -20 13 56.13  24.7r 20KN53    266  C~6c5X      
2020 06  21.45390  19 11 34.712  -20 14 00.64  25.0r 20KN53    266  C~6c5X      
2020 06  21.53376  19 11 34.299  -20 14 01.07  25.0r 20KN53    266  C~6c5X      
2020 06  21.61261  19 11 33.893  -20 14 01.48  25.0r 20KN53    266  C~6c5X      
2020 06  22.44948  19 11 29.649  -20 14 06.08  24.8r 20KN53    266  C~6c5X      
2020 06  22.52092  19 11 29.278  -20 14 06.48  24.8r 20KN53    266  C~6c5X      
2020 06  22.59118  19 11 28.913  -20 14 06.85  24.8r 20KN53    266  C~6c5X      
2020 06  24.43648  19 11 19.451  -20 14 17.27  24.8r 20KN53    266  C~6c5X      
2020 06  24.51619  19 11 19.032  -20 14 17.73  24.8r 20KN53    266  C~6c5X      
2020 06  24.59604  19 11 18.613  -20 14 18.17  24.8r 20KN53    266  C~6c5X      
2020 06  25.44823  19 11 14.217  -20 14 23.11  24.8r 20KN53    266  C~6c5X      
2020 06  25.53213  19 11 13.774  -20 14 23.60  24.8r 20KN53    266  C~6c5X      
2020 06  25.61487  19 11 13.338  -20 14 24.05  24.8r 20KN53    266  C~6c5X      
2020 08  12.26680  19 07 13.101  -20 19 44.32  25.0r 20KN53    266  C~6c5X      
2020 08  12.34843  19 07 12.750  -20 19 44.86  25.0r 20KN53    266  C~6c5X      
2020 08  12.42950  19 07 12.403  -20 19 45.37  25.0r 20KN53    266  C~6c5X      
2020 08  14.24286  19 07 04.923  -20 19 56.90  24.8r 20KN53    266  C~6c5X      
2020 08  14.33285  19 07 04.549  -20 19 57.48  24.8r 20KN53    266  C~6c5X      
2020 08  14.42134  19 07 04.181  -20 19 58.03  24.8r 20KN53    266  C~6c5X      

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    -0.03
     2   0.0001     -3.01     0.00       0.24    -0.04
     3   0.0003     -6.09     0.01       0.50    -0.04
     4   0.0055   -108.91    -0.00       8.97    -0.01
     5   0.0057   -114.10    -0.00       9.38     0.00
     6   0.0059   -119.12     0.00       9.79    -0.00
     7   0.0109   -221.69    -0.01      17.80     0.06
     8   0.0110   -224.08    -0.02      17.97     0.05
     9   0.0114   -231.88    -0.02      18.57     0.05
    10   0.0630  -1457.59     0.04      92.00     0.00
    11   0.0632  -1462.87     0.03      92.26    -0.00
    12   0.0635  -1469.63     0.04      92.62     0.00
    13   0.0657  -1528.82    -0.03      95.39     0.00
    14   0.0659  -1534.65    -0.03      95.68     0.01
    15   0.0662  -1540.37    -0.02      95.97     0.00
    16   0.0685  -1600.22     0.01      98.72     0.01
    17   0.0686  -1605.45     0.02      98.97     0.00
    18   0.0688  -1610.59     0.02      99.23     0.01
    19   0.0739  -1744.04    -0.01     105.18    -0.01
    20   0.0741  -1749.95    -0.01     105.44    -0.01
    21   0.0743  -1755.86    -0.01     105.72    -0.01
    22   0.0767  -1817.87    -0.01     108.38    -0.02
    23   0.0769  -1824.12    -0.01     108.65    -0.03
    24   0.0771  -1830.27    -0.02     108.96    -0.02
    25   0.2076  -5225.49    -0.01     193.40    -0.00
    26   0.2078  -5230.46    -0.02     193.43    -0.01
    27   0.2080  -5235.37    -0.01     193.49    -0.01
    28   0.2130  -5341.28     0.01     194.24     0.02
    29   0.2132  -5346.58     0.02     194.27     0.01
    30   0.2135  -5351.79     0.01     194.32     0.01

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.

20KN53    quality flag:1

Type:      CLASSICAL CLASSICAL  SCATNEAR

axisobj        42.684    45.850    40.670
ecceobj         0.098     0.150     0.143
incobj          9.271     8.954     9.611
qmin           37.721    38.325    33.189
qmax           48.302    54.307    49.101
amean          42.889    46.121    40.937
amin           42.543    45.728    40.484
amax           43.272    46.577    41.438
emean           0.099     0.154     0.160
emin            0.081     0.140     0.125
emax            0.118     0.167     0.188
imean          11.121    10.553    13.014
imin           10.311    10.006     8.632
imax           11.906    10.999    15.628
excite_mean     0.217     0.239     0.277
fracstop        1.000     1.000     1.000
cjmean          3.032     3.057     2.976

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       176.9     172.6     180.2
kozaiamp        179.9     180.0     179.9