Orbit Fit and Astrometric record for 14XT54

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: 14XT54    
# Created Sat Nov 27 02:13:03 2021
# Orbit generated from Bernstein formalism
# Fitting     19 observations of     19
# Arc:   3.96y
# First observation: 2014/12/15
#  Last observation: 2018/11/30
Preliminary a, adot, b, bdot, g, gdot:
   0.000005   0.017413   0.000105   0.004878   0.022263   0.000000
# Chi-squared of fit:     7.61 DOF:     32 RMS:  0.11
# Min/Max residuals:    -0.26    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.282734E-05  1.737417E-02  2.920835E-06  4.848217E-03  2.161112E-02  1.201374E-03
# Covariance matrix:
  4.2512E-13 -4.1006E-13 -4.2849E-15 -6.9347E-14 -2.7023E-13 -4.8940E-12
 -4.1006E-13  6.8862E-13 -6.6729E-14  1.2673E-13  1.8637E-13  9.4862E-12
 -4.2849E-15 -6.6729E-14  2.6345E-13 -9.9861E-14  1.3921E-13 -9.0705E-13
 -6.9347E-14  1.2673E-13 -9.9861E-14  8.3282E-14  5.9924E-14  1.9173E-12
 -2.7023E-13  1.8637E-13  1.3921E-13  5.9924E-14  7.9231E-13  3.2425E-12
 -4.8940E-12  9.4862E-12 -9.0705E-13  1.9173E-12  3.2425E-12  1.4277E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
  -34.589218   -1.931461   -0.979315   -0.052793   -0.076905  2457006.585778
# Heliocentric elements and errors
Epoch:              2457000.5000  =  2014/12/09
Mean Anomaly:          150.32850 +/-     0.151
Argument of Peri:      132.69999 +/-     0.147
Long of Asc Node:       62.04724 +/-     0.001
Inclination:            37.78509 +/-     0.000
Eccentricity:         0.20104727 +/-    0.0002
Semi-Major Axis:     39.20330320 +/-    0.0059
Time of Perihelion: 2419561.7577 +/-      36.6
Perihelion:          31.32158607 +/-    0.0089
Aphelion:            47.08502034 +/-    0.0103
Period (y)              245.4665 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           38.19541861 +/-    0.0016
Ecliptic Y           -0.30675342 +/-    0.0000
Ecliptic Z          -26.26831713 +/-    0.0011
Ecliptic XDOT         0.00054381 +/-    0.0000
Ecliptic YDOT         0.00217872 +/-    0.0000
Ecliptic ZDOT         0.00041934 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.35740054 +/-    0.0014
Geocenter to KBO     46.27247515 +/-    0.0019
# Hcoef:  7.00

The following table shows the complete astrometric record for 14XT54. 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 (14XT54) followed by the observatory code and reference code for the source of the astrometry.

2014 12  15.08500  00 54 44.618  -32 07 57.55  23.2r 14XT54    W84  C~55TM      
2014 12  16.10095  00 54 43.141  -32 07 14.02  24.2g 14XT54    W84  C~55TM      
2014 12  24.07406  00 54 34.799  -32 01 07.66  24.1i 14XT54    W84  C~55TM      
2015 10  18.14739  01 01 48.868  -31 42 07.55  23.7r 14XT54    W84  C~55TM      
2015 10  18.14875  01 01 48.852  -31 42 07.41  24.6g 14XT54    W84  C~55TM      
2015 11  05.12861  01 00 22.719  -31 42 19.91  23.7i 14XT54    W84  C~55TM      
2015 11  05.12998  01 00 22.740  -31 42 19.82  24.4g 14XT54    W84  C~55TM      
2015 11  08.10429  01 00 09.612  -31 41 52.97  23.6r 14XT54    W84  C~55TM      
2015 11  08.10568  01 00 09.599  -31 41 52.92  23.1i 14XT54    W84  C~55TM      
2015 11  08.10706  01 00 09.590  -31 41 52.91  24.0g 14XT54    W84  C~55TM      
2016 10  21.14618  01 04 57.641  -30 58 35.62  23.3r 14XT54    W84  C~55TN      
2016 11  05.24367  01 03 46.318  -30 58 28.51  23.7i 14XT54    W84  C~55TN      
2016 12  20.12933  01 01 32.051  -30 38 13.21  23.6r 14XT54    W84  C~55TN      
2017 09  25.23606  01 10 30.292  -30 06 25.98  23.9r 14XT54    W84  C~55TN      
2017 10  20.29711  01 08 26.678  -30 14 12.71  23.1r 14XT54    W84  C~55TN      
2017 10  20.29848  01 08 26.681  -30 14 12.35  24.1g 14XT54    W84  C~55TN      
2017 12  11.15999  01 05 08.945  -30 01 11.34  23.6r 14XT54    W84  C~55TN      
2017 12  11.16137  01 05 08.934  -30 01 11.01  24.3g 14XT54    W84  C~55TN      
2018 11  30.19328  01 08 57.063  -29 23 27.61  23.7r 14XT54    W84  C~55TN      

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     0.13
     2   0.0028      3.87     0.06      47.24    -0.19
     3   0.0246     82.16    -0.10     420.52    -0.05
     4   0.8407   5488.59    -0.04   -1212.49    -0.14
     5   0.8407   5488.48    -0.06   -1212.27     0.05
     6   0.8899   4518.96    -0.14    -692.80     0.14
     7   0.8899   4519.24     0.20    -692.85     0.04
     8   0.8981   4385.17     0.08    -588.74    -0.00
     9   0.8981   4385.05     0.02    -588.62     0.07
    10   0.8981   4384.95    -0.02    -588.55     0.09
    11   1.8510   8876.87    -0.11    -108.06    -0.06
    12   1.8923   8078.75     0.05     346.84     0.04
    13   2.0152   7154.99     0.16    2250.20    -0.14
    14   2.7793  14176.99    -0.01     483.39    -0.02
    15   2.8479  12547.95    -0.12     878.67    -0.26
    16   2.8479  12548.16     0.17     878.96    -0.00
    17   2.9899  10696.50    -0.09    2826.62     0.00
    18   2.9899  10696.53    -0.04    2826.98     0.30
    19   3.9592  14413.13     0.00    3330.86    -0.00

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.

14XT54    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.452    39.471    39.434
ecceobj         0.194     0.194     0.194
incobj         37.772    37.772    37.772
qmin           23.880    23.589    28.370
qmax           55.605    55.905    51.220
amean          39.453    39.453    39.453
amin           39.057    39.083    39.048
amax           39.932    39.995    39.932
emean           0.284     0.301     0.219
emin            0.156     0.155     0.142
emax            0.393     0.400     0.283
imean          34.744    34.170    36.143
imin           31.612    30.982    35.030
imax           37.321    37.347    37.279
excite_mean     0.640     0.641     0.630
fracstop        1.000     1.000     1.000
cjmean          2.563     2.564     2.566

libcent 0       181.0     178.9     178.6
libamp  0        74.8      62.0      86.1
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       230.5      73.2     178.3
kozaiamp        180.0      83.1     180.0