Orbit Fit and Astrometric record for 23FR54

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: 23FR54    
# Created Wed Dec 25 02:11:19 2024
# Orbit generated from Bernstein formalism
# Fitting     10 observations of     10
# Arc:   0.97y
# First observation: 2023/03/21
#  Last observation: 2024/03/08
Preliminary a, adot, b, bdot, g, gdot:
  -0.000012   0.021425   0.000006  -0.003860   0.023005   0.000000
# Chi-squared of fit:     2.41 DOF:     14 RMS:  0.09
# Min/Max residuals:    -0.18    0.12
# Exact a, adot, b, bdot, g, gdot:
  1.432667E-05  2.131371E-02 -2.694818E-06 -3.848886E-03  2.323495E-02 -2.678034E-04
# Covariance matrix:
  7.2517E-13  3.0388E-12  7.5988E-14 -6.9857E-13  2.5034E-12  1.6993E-10
  3.0388E-12  4.8894E-10  6.9724E-12 -8.2295E-11  1.6900E-10  2.0630E-08
  7.5988E-14  6.9724E-12  3.9704E-13 -1.5227E-12  2.5049E-12  2.9651E-10
 -6.9857E-13 -8.2295E-11 -1.5227E-12  1.4691E-11 -2.8914E-11 -3.4864E-09
  2.5034E-12  1.6900E-10  2.5049E-12 -2.8914E-11  6.2888E-11  7.2312E-09
  1.6993E-10  2.0630E-08  2.9651E-10 -3.4864E-09  7.2312E-09  8.7362E-07
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.836918  157.204467   -0.391315    0.045592   -0.924518  2460024.799871
# Heliocentric elements and errors
Epoch:              2460020.5000  =  2023/03/17
Mean Anomaly:          182.36817 +/-    63.004
Argument of Peri:      342.60286 +/-    63.050
Long of Asc Node:      352.64606 +/-     0.003
Inclination:            10.66039 +/-     0.002
Eccentricity:         0.03781084 +/-    0.0019
Semi-Major Axis:     42.35661027 +/-    0.0172
Time of Perihelion: 2509702.4373 +/-   17621.7
Perihelion:          40.75507106 +/-    0.0835
Aphelion:            43.95814948 +/-    0.0838
Period (y)              275.6703 +/-      0.17
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -40.62464829 +/-    0.0135
Ecliptic Y           16.65253068 +/-    0.0057
Ecliptic Z            2.13001719 +/-    0.0007
Ecliptic XDOT        -0.00096660 +/-    0.0001
Ecliptic YDOT        -0.00231011 +/-    0.0000
Ecliptic ZDOT        -0.00045456 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.95686295 +/-    0.0127
Geocenter to KBO     43.03861740 +/-    0.0147
# Hcoef:  6.14

The following table shows the complete astrometric record for 23FR54. 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 (23FR54) followed by the observatory code and reference code for the source of the astrometry.

2023 03  21.29907  10 39 57.110  +11 29 53.41  22.4r 23FR54    568  C~7xZn      
2023 03  21.49670  10 39 56.264  +11 29 57.47  22.5r 23FR54    568  C~7xZn      
2023 04  22.05788  10 38 08.974  +11 37 55.82  22.5r 23FR54    304  C~7xZn      
2023 04  22.12657  10 38 08.786  +11 37 56.47  22.5r 23FR54    304  C~7xZn      
2023 05  15.08792  10 37 33.582  +11 39 03.88  22.5r 23FR54    304  C~7xZn      
2023 05  15.96946  10 37 33.100  +11 39 01.21  22.6r 23FR54    304  C~7xZn      
2024 03  06.26934  10 45 15.671  +10 44 39.91        23FR54    G37  C~7xZn      
2024 03  06.29451  10 45 15.558  +10 44 40.61        23FR54    G37  C~7xZn      
2024 03  07.25858  10 45 11.200  +10 45 04.33  22.6r 23FR54    304  C~7xZn      
2024 03  08.25091  10 45 06.732  +10 45 28.18  22.6r 23FR54    304  C~7xZn      

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     0.04       0.00     0.02
     2   0.0005    -13.05    -0.01      -0.89    -0.05
     3   0.0870  -1654.32     0.07    -146.02     0.00
     4   0.0871  -1657.13    -0.18    -146.44    -0.02
     5   0.1500  -2162.26    -0.01    -276.56     0.02
     6   0.1524  -2167.83     0.09    -281.67     0.05
     7   0.9609   5366.35     0.12    -749.81    -0.13
     8   0.9610   5364.54     0.12    -749.79    -0.03
     9   0.9636   5296.07    -0.07    -752.13     0.10
    10   0.9663   5226.05    -0.18    -754.96     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.

23FR54    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        42.581    43.445    42.443
ecceobj         0.034     0.101     0.062
incobj         10.644    10.644    10.646
qmin           40.411    38.338    39.147
qmax           45.021    48.774    46.054
amean          42.597    43.432    42.468
amin           42.278    43.083    42.131
amax           42.925    43.808    42.809
emean           0.035     0.097     0.053
emin            0.021     0.081     0.034
emax            0.050     0.115     0.076
imean          10.877    10.918    10.807
imin           10.128    10.210    10.001
imax           11.574    11.640    11.651
excite_mean     0.192     0.213     0.195
fracstop        1.000     1.000     1.000
cjmean          3.041     3.040     3.038

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       181.1     183.6     177.8
kozaiamp        180.0     180.0     180.0