Orbit Fit and Astrometric record for 23FT54

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: 23FT54    
# Created Wed Dec 25 02:11:19 2024
# Orbit generated from Bernstein formalism
# Fitting      8 observations of      8
# Arc:   0.97y
# First observation: 2023/03/21
#  Last observation: 2024/03/08
Preliminary a, adot, b, bdot, g, gdot:
  -0.000016   0.034584   0.000013  -0.006123   0.029288   0.000000
# Chi-squared of fit:     2.24 DOF:     10 RMS:  0.09
# Min/Max residuals:    -0.15    0.18
# Exact a, adot, b, bdot, g, gdot:
  1.821632E-05  3.429105E-02 -3.064584E-06 -6.082765E-03  2.959252E-02 -3.234183E-03
# Covariance matrix:
  7.2403E-13  3.2724E-12  7.5035E-14 -7.4505E-13  2.5160E-12  1.1584E-10
  3.2724E-12  6.1654E-10  8.5902E-12 -1.0572E-10  2.0004E-10  1.6800E-08
  7.5035E-14  8.5902E-12  4.2041E-13 -1.8546E-12  2.8724E-12  2.3551E-10
 -7.4505E-13 -1.0572E-10 -1.8546E-12  1.9419E-11 -3.4762E-11 -2.8913E-09
  2.5160E-12  2.0004E-10  2.8724E-12 -3.4762E-11  6.9425E-11  5.5154E-09
  1.1584E-10  1.6800E-08  2.3551E-10 -2.8913E-09  5.5154E-09  4.5933E-07
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.380251  156.365535   -0.404826    0.037980   -0.919028  2460024.799871
# Heliocentric elements and errors
Epoch:              2460020.5000  =  2023/03/17
Mean Anomaly:          345.21014 +/-     3.065
Argument of Peri:      191.30904 +/-     5.277
Long of Asc Node:      349.80808 +/-     0.002
Inclination:            10.36765 +/-     0.002
Eccentricity:         0.23555191 +/-    0.0096
Semi-Major Axis:     44.63331877 +/-    0.2178
Time of Perihelion: 2464495.0425 +/-     926.6
Perihelion:          34.11985523 +/-    0.4582
Aphelion:            55.14678232 +/-    0.5046
Period (y)              298.1927 +/-      2.18
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -31.92743794 +/-    0.0087
Ecliptic Y           13.53358971 +/-    0.0038
Ecliptic Z            1.40334286 +/-    0.0004
Ecliptic XDOT        -0.00102131 +/-    0.0001
Ecliptic YDOT        -0.00300822 +/-    0.0000
Ecliptic ZDOT        -0.00057473 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.70574470 +/-    0.0081
Geocenter to KBO     33.79232454 +/-    0.0095
# Hcoef:  7.57

The following table shows the complete astrometric record for 23FT54. 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 (23FT54) followed by the observatory code and reference code for the source of the astrometry.

2023 03  21.29907  10 36 04.997  +11 23 13.33  22.9r 23FT54    568  C~7xZn      
2023 03  21.49670  10 36 03.978  +11 23 18.02  23.0r 23FT54    568  C~7xZn      
2023 04  22.06157  10 33 57.168  +11 32 16.74  22.9r 23FT54    304  C~7xZn      
2023 04  22.12990  10 33 56.988  +11 32 17.48  23.0r 23FT54    304  C~7xZn      
2023 05  15.09540  10 33 20.228  +11 32 56.29  22.9r 23FT54    304  C~7xZn      
2023 05  16.07711  10 33 19.890  +11 32 50.59  22.9r 23FT54    304  C~7xZn      
2024 03  07.26793  10 44 09.568  +10 13 33.77  22.9r 23FT54    304  C~7xZn      
2024 03  08.26127  10 44 04.096  +10 14 01.98  23.0r 23FT54    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     0.02       0.00    -0.04
     2   0.0005    -15.65     0.01      -1.22    -0.13
     3   0.0870  -1946.77    -0.12    -192.29    -0.03
     4   0.0871  -1949.50     0.02    -192.58     0.18
     5   0.1500  -2465.87    -0.02    -356.30    -0.00
     6   0.1527  -2468.38     0.10    -363.43     0.04
     7   0.9636   8190.04     0.10   -1199.19     0.13
     8   0.9664   8104.46    -0.10   -1203.58    -0.15

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.

23FT54    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        44.969    45.771    44.541
ecceobj         0.239     0.249     0.244
incobj         10.352    10.354    10.351
qmin           32.128    33.821    32.968
qmax           62.092    58.324    56.915
amean          45.510    45.784    44.301
amin           44.588    45.355    43.624
amax           47.479    46.327    45.150
emean           0.259     0.249     0.225
emin            0.228     0.237     0.204
emax            0.312     0.259     0.261
imean          11.262    10.962     8.492
imin            9.342    10.236     6.096
imax           13.532    11.660    11.557
excite_mean     0.325     0.313     0.270
fracstop        1.000     1.000     1.000
cjmean          2.989     3.002     3.015

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       183.7     176.2     182.7
kozaiamp        180.0     180.0     180.0