Orbit Fit and Astrometric record for 20KC53

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: 20KC53    
# Created Tue Apr  1 01:11:19 2025
# Orbit generated from Bernstein formalism
# Fitting     27 observations of     27
# Arc:  77.97d
# First observation: 2020/05/28
#  Last observation: 2020/08/14
Preliminary a, adot, b, bdot, g, gdot:
   0.000004   0.015861   0.000003   0.000447   0.021969   0.000000
# Chi-squared of fit:     0.94 DOF:     48 RMS:  0.03
# Min/Max residuals:    -0.09    0.05
# Exact a, adot, b, bdot, g, gdot:
  1.491578E-05  2.154616E-02  7.131463E-07  4.383938E-04  2.292776E-02  1.619204E-04
# Covariance matrix:
  1.2306E-13  1.7024E-11 -7.6025E-15 -5.6421E-15  3.6884E-12  1.5888E-10
  1.7024E-11  1.4035E-07 -5.4073E-11 -1.3961E-10  2.6105E-08  4.4168E-07
 -7.6025E-15 -5.4073E-11  1.0930E-13 -4.7376E-13 -1.0069E-11 -1.7286E-10
 -5.6421E-15 -1.3961E-10 -4.7376E-13  8.2703E-12 -2.5814E-11 -4.0160E-10
  3.6884E-12  2.6105E-08 -1.0069E-11 -2.5814E-11  4.8614E-09  8.3513E-08
  1.5888E-10  4.4168E-07 -1.7286E-10 -4.0160E-10  8.3513E-08  1.7213E-06
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.109404  -73.157536    0.648170    0.028335   -0.772773  2458997.947541
# Heliocentric elements and errors
Epoch:              2458990.5000  =  2020/05/21
Mean Anomaly:          274.42707 +/-   225.582
Argument of Peri:      146.59439 +/-   234.557
Long of Asc Node:      225.83853 +/-     0.444
Inclination:             2.38831 +/-     0.011
Eccentricity:         0.00746490 +/-    0.0587
Semi-Major Axis:     44.42416928 +/-    1.0401
Time of Perihelion: 2484698.0859 +/-   67762.7
Perihelion:          44.09254746 +/-    2.8049
Aphelion:            44.75579111 +/-    2.8107
Period (y)              296.0992 +/-     10.40
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           12.23790144 +/-    0.0384
Ecliptic Y          -42.65085370 +/-    0.1269
Ecliptic Z            1.60547973 +/-    0.0049
Ecliptic XDOT         0.00247567 +/-    0.0001
Ecliptic YDOT         0.00073235 +/-    0.0001
Ecliptic ZDOT         0.00005279 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.40089096 +/-    0.1223
Geocenter to KBO     43.61524608 +/-    0.1326
# Hcoef:  9.53

The following table shows the complete astrometric record for 20KC53. 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 (20KC53) followed by the observatory code and reference code for the source of the astrometry.

2020 05  28.44674  19 11 55.264  -20 17 05.12  25.4r 20KC53    266  C~7ulo      
2020 05  28.50129  19 11 55.070  -20 17 05.35  25.4r 20KC53    266  C~7ulo      
2020 05  28.55756  19 11 54.868  -20 17 05.57  25.4r 20KC53    266  C~7ulo      
2020 05  29.44698  19 11 51.746  -20 17 08.99  26.0r 20KC53    266  C~6VL9      
2020 05  29.53371  19 11 51.431  -20 17 09.35  26.0r 20KC53    266  C~6VL9      
2020 05  29.61905  19 11 51.121  -20 17 09.69  26.0r 20KC53    266  C~6VL9      
2020 05  30.44075  19 11 48.182  -20 17 13.08  25.9r 20KC53    266  C~6VL9      
2020 05  30.53044  19 11 47.851  -20 17 13.47  25.9r 20KC53    266  C~6VL9      
2020 05  30.61862  19 11 47.525  -20 17 13.84  25.9r 20KC53    266  C~6VL9      
2020 05  31.44139  19 11 44.542  -20 17 17.36  26.3r 20KC53    266  C~6VL9      
2020 05  31.52961  19 11 44.211  -20 17 17.75  26.3r 20KC53    266  C~6VL9      
2020 05  31.61814  19 11 43.879  -20 17 18.13  26.3r 20KC53    266  C~6VL9      
2020 06  01.43269  19 11 40.878  -20 17 21.73  26.1r 20KC53    266  C~6VL9      
2020 06  01.47325  19 11 40.724  -20 17 21.92  26.1r 20KC53    266  C~6VL9      
2020 06  01.60571  19 11 40.219  -20 17 22.51  26.1r 20KC53    266  C~6VL9      
2020 06  21.45390  19 10 16.670  -20 19 15.14  26.2r 20KC53    266  C~6VL9      
2020 06  21.53376  19 10 16.297  -20 19 15.67  26.2r 20KC53    266  C~6VL9      
2020 06  21.61261  19 10 15.929  -20 19 16.18  26.2r 20KC53    266  C~6VL9      
2020 06  24.43648  19 10 02.876  -20 19 35.49  25.8r 20KC53    266  C~6VL9      
2020 06  24.52180  19 10 02.471  -20 19 36.08  25.8r 20KC53    266  C~6VL9      
2020 06  24.61708  19 10 02.020  -20 19 36.72  25.8r 20KC53    266  C~6VL9      
2020 08  12.26680  19 06 20.683  -20 25 56.26  26.0r 20KC53    266  C~6VL9      
2020 08  12.34843  19 06 20.367  -20 25 56.88  26.0r 20KC53    266  C~6VL9      
2020 08  12.42950  19 06 20.054  -20 25 57.48  26.0r 20KC53    266  C~6VL9      
2020 08  14.24286  19 06 13.301  -20 26 11.10  25.8r 20KC53    266  C~6VL9      
2020 08  14.33285  19 06 12.963  -20 26 11.78  25.8r 20KC53    266  C~6VL9      
2020 08  14.42134  19 06 12.631  -20 26 12.42  25.8r 20KC53    266  C~6VL9      

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    -0.01       0.00    -0.08
     2   0.0001     -2.74    -0.00       0.11    -0.09
     3   0.0003     -5.58    -0.01       0.24    -0.09
     4   0.0027    -49.60     0.04       2.24     0.02
     5   0.0030    -54.04     0.04       2.43     0.03
     6   0.0032    -58.41     0.05       2.62     0.03
     7   0.0055    -99.86    -0.04       4.33     0.04
     8   0.0057   -104.53    -0.04       4.52     0.04
     9   0.0059   -109.13    -0.04       4.71     0.03
    10   0.0082   -151.22    -0.01       6.37     0.02
    11   0.0084   -155.89    -0.01       6.55     0.02
    12   0.0087   -160.57     0.00       6.75     0.02
    13   0.0109   -202.91     0.01       8.35     0.00
    14   0.0110   -205.09     0.01       8.43     0.00
    15   0.0114   -212.21     0.02       8.71     0.00
    16   0.0657  -1392.56    -0.04      39.66    -0.01
    17   0.0659  -1397.84    -0.04      39.77    -0.01
    18   0.0662  -1403.04    -0.04      39.88    -0.01
    19   0.0739  -1587.64     0.04      42.79     0.02
    20   0.0741  -1593.37     0.04      42.89     0.02
    21   0.0744  -1599.74     0.04      43.01     0.02
    22   0.2076  -4735.81    -0.00      31.02     0.03
    23   0.2078  -4740.30     0.00      30.91     0.03
    24   0.2080  -4744.74     0.01      30.82     0.03
    25   0.2130  -4840.65    -0.01      28.14    -0.03
    26   0.2132  -4845.45    -0.00      28.01    -0.03
    27   0.2135  -4850.16    -0.00      27.91    -0.03

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.

20KC53    quality flag:1

Type:      CLASSICAL CLASSICAL  SCATNEAR

axisobj        43.885    49.375    41.186
ecceobj         0.015     0.170     0.153
incobj          2.401     2.369     2.437
qmin           42.532    40.402    34.670
qmax           45.865    59.418    48.306
amean          44.107    49.700    41.209
amin           43.771    49.261    40.721
amax           44.455    50.193    41.702
emean           0.017     0.173     0.132
emin            0.001     0.162     0.108
emax            0.032     0.184     0.159
imean           3.862     3.568     4.431
imin            3.256     3.303     1.056
imax            4.424     3.827     6.245
excite_mean     0.070     0.184     0.155
fracstop        1.000     1.000     1.000
cjmean          3.097     3.131     3.043

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       181.5     172.4     177.3
kozaiamp        180.0     180.0     179.9