Orbit Fit and Astrometric record for 14XR54

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: 14XR54    
# Created Tue Nov 30 02:13:01 2021
# Orbit generated from Bernstein formalism
# Fitting      9 observations of      9
# Arc:   3.78y
# First observation: 2014/12/12
#  Last observation: 2018/09/21
Preliminary a, adot, b, bdot, g, gdot:
  -0.000341   0.029358  -0.000058   0.005001   0.028481   0.000000
# Chi-squared of fit:     1.34 DOF:     12 RMS:  0.07
# Min/Max residuals:    -0.17    0.12
# Exact a, adot, b, bdot, g, gdot:
  1.743782E-05  2.818256E-02  2.198238E-06  4.494707E-03  2.537299E-02 -9.160926E-03
# Covariance matrix:
  7.3416E-13 -4.9235E-13  2.2848E-15 -3.8570E-15  1.8870E-14 -2.1686E-12
 -4.9235E-13  1.1007E-12 -2.9328E-15 -4.9403E-14 -4.8473E-13  7.1869E-12
  2.2848E-15 -2.9328E-15  6.6267E-13 -2.3831E-13 -6.7721E-14 -1.8866E-13
 -3.8570E-15 -4.9403E-14 -2.3831E-13  2.2418E-13  8.0061E-13  1.5268E-12
  1.8870E-14 -4.8473E-13 -6.7721E-14  8.0061E-13  5.2552E-12  8.6791E-12
 -2.1686E-12  7.1869E-12 -1.8866E-13  1.5268E-12  8.6791E-12  8.1179E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -27.578495  -10.017517   -0.984160   -0.003153   -0.006454  2457003.574368
# Heliocentric elements and errors
Epoch:              2457000.5000  =  2014/12/09
Mean Anomaly:          341.13388 +/-     0.028
Argument of Peri:      341.57959 +/-     0.037
Long of Asc Node:       61.26179 +/-     0.002
Inclination:            29.10635 +/-     0.000
Eccentricity:         0.46897469 +/-    0.0005
Semi-Major Axis:     64.59924229 +/-    0.0607
Time of Perihelion: 2466938.9731 +/-       4.8
Perihelion:          34.30383296 +/-    0.0458
Aphelion:            94.89465161 +/-    0.0949
Period (y)              519.2175 +/-      0.73
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.57697483 +/-    0.0031
Ecliptic Y           -5.10718849 +/-    0.0006
Ecliptic Z          -18.24628624 +/-    0.0016
Ecliptic XDOT        -0.00011684 +/-    0.0000
Ecliptic YDOT         0.00310289 +/-    0.0000
Ecliptic ZDOT         0.00088763 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.42813113 +/-    0.0028
Geocenter to KBO     39.41198322 +/-    0.0036
# Hcoef:  7.72

The following table shows the complete astrometric record for 14XR54. 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 (14XR54) followed by the observatory code and reference code for the source of the astrometry.

2014 12  12.07359  00 11 12.069  -29 05 02.49  23.6i 14XR54    W84  C~55TM      
2014 12  13.07205  00 11 11.688  -29 04 15.14  23.9r 14XR54    W84  C~55TM      
2016 11  27.12957  00 23 41.654  -27 16 11.95  23.4r 14XR54    W84  C~55TM      
2017 09  24.33885  00 34 36.765  -26 15 25.17  23.2i 14XR54    W84  C~55TM      
2017 09  26.22190  00 34 26.649  -26 16 14.43  23.5r 14XR54    W84  C~55TM      
2017 09  27.29746  00 34 20.851  -26 16 41.40  23.5i 14XR54    W84  C~55TM      
2017 09  27.29883  00 34 20.832  -26 16 41.49  24.0r 14XR54    W84  C~55TM      
2017 09  27.30020  00 34 20.829  -26 16 41.56  24.4g 14XR54    W84  C~55TM      
2018 09  21.24101  00 41 04.552  -25 07 23.08  22.5z 14XR54    W84  C~55TM      

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     0.03       0.00     0.12
     2   0.0027     16.76    -0.03      44.57    -0.08
     3   1.9605  11816.41     0.03    1243.06    -0.01
     4   2.7851  21325.35    -0.03     220.92    -0.17
     5   2.7903  21181.08    -0.01     244.78     0.03
     6   2.7932  21099.03     0.11     259.53    -0.00
     7   2.7932  21098.76    -0.06     259.58     0.03
     8   2.7932  21098.69    -0.02     259.54    -0.04
     9   3.7760  27995.66     0.00    1178.14     0.12

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.

14XR54    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        65.537    65.702    65.372
ecceobj         0.475     0.477     0.474
incobj         29.110    29.109    29.110
qmin           32.381    31.857    32.331
qmax           98.903   100.606    97.388
amean          64.119    65.175    63.915
amin           62.519    64.073    62.726
amax           66.007    66.572    65.609
emean           0.470     0.486     0.472
emin            0.442     0.461     0.447
emax            0.500     0.512     0.494
imean          27.569    26.989    27.366
imin           26.327    25.551    26.310
imax           28.741    28.318    28.433
excite_mean     0.660     0.665     0.659
fracstop        1.000     1.000     1.000
cjmean          2.753     2.753     2.753

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       164.6     162.4     170.0
kozaiamp        180.0     180.0     180.0