Orbit Fit and Astrometric record for 14XS54

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: 14XS54    
# Created Sat Dec  4 02:13:01 2021
# Orbit generated from Bernstein formalism
# Fitting     11 observations of     11
# Arc:   3.90y
# First observation: 2014/12/12
#  Last observation: 2018/11/07
Preliminary a, adot, b, bdot, g, gdot:
   0.000061   0.025096   0.000018   0.004909   0.025317   0.000000
# Chi-squared of fit:     7.74 DOF:     16 RMS:  0.15
# Min/Max residuals:    -0.31    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.605405E-05  2.533166E-02  2.555427E-06  4.931860E-03  2.490362E-02  4.104199E-03
# Covariance matrix:
  7.1796E-13 -4.9900E-13  2.3355E-14 -5.3120E-14 -1.8866E-13 -3.2020E-12
 -4.9900E-13  8.0791E-13 -5.3746E-14  1.1159E-13  9.7924E-14  7.4473E-12
  2.3355E-14 -5.3746E-14  5.8042E-13 -2.1741E-13 -1.6234E-14 -5.7322E-13
 -5.3120E-14  1.1159E-13 -2.1741E-13  1.1839E-13  6.3908E-14  1.2213E-12
 -1.8866E-13  9.7924E-14 -1.6234E-14  6.3908E-14  9.8336E-13  2.0262E-12
 -3.2020E-12  7.4473E-12 -5.7322E-13  1.2213E-12  2.0262E-12  7.9198E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -27.109348   28.253924   -0.769495   -0.279426   -0.546263  2457003.692228
# Heliocentric elements and errors
Epoch:              2457000.5000  =  2014/12/09
Mean Anomaly:           42.71292 +/-     0.026
Argument of Peri:      228.18945 +/-     0.048
Long of Asc Node:       95.12786 +/-     0.001
Inclination:            28.91222 +/-     0.000
Eccentricity:         0.21821012 +/-    0.0004
Semi-Major Axis:     46.91667258 +/-    0.0126
Time of Perihelion: 2443073.8710 +/-       6.5
Perihelion:          36.67897962 +/-    0.0196
Aphelion:            57.15436554 +/-    0.0229
Period (y)              321.3653 +/-      0.13
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           31.65800877 +/-    0.0013
Ecliptic Y           17.89000391 +/-    0.0007
Ecliptic Z          -18.29812314 +/-    0.0007
Ecliptic XDOT        -0.00075100 +/-    0.0000
Ecliptic YDOT         0.00275508 +/-    0.0000
Ecliptic ZDOT         0.00027712 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.70753087 +/-    0.0011
Geocenter to KBO     40.15480923 +/-    0.0016
# Hcoef:  7.70

The following table shows the complete astrometric record for 14XS54. 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 (14XS54) followed by the observatory code and reference code for the source of the astrometry.

2014 12  12.19145  02 23 39.250  -14 30 20.17  22.8z 14XS54    W84  C~55TM      
2014 12  20.17285  02 23 13.624  -14 27 31.80  24.4r 14XS54    W84  C~55TM      
2016 09  23.32842  02 39 45.413  -12 36 09.06  23.5r 14XS54    W84  C~55TM      
2016 11  19.16214  02 35 24.945  -12 58 08.37  23.4i 14XS54    W84  C~55TM      
2016 11  25.14540  02 34 57.170  -12 58 14.93  23.9r 14XS54    W84  C~55TM      
2016 12  02.15096  02 34 26.488  -12 57 44.73  23.8r 14XS54    W84  C~55TM      
2017 10  30.30285  02 42 01.963  -12 06 30.74  23.7r 14XS54    W84  C~55TM      
2017 10  30.30422  02 42 01.980  -12 06 30.65  25.0g 14XS54    W84  C~55TM      
2017 12  14.08963  02 38 38.547  -12 08 15.03  23.2r 14XS54    W84  C~55TM      
2017 12  14.09100  02 38 38.555  -12 08 15.12  24.4g 14XS54    W84  C~55TM      
2018 11  07.26182  02 46 17.940  -11 21 05.50  24.4r 14XS54    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     0.01       0.00     0.12
     2   0.0219   -286.08    -0.01     291.59     0.01
     3   1.7827  15652.85     0.04    1158.30     0.03
     4   1.9383  11608.33    -0.29    1364.83    -0.31
     5   1.9547  11228.05    -0.05    1510.35     0.02
     6   1.9739  10821.97     0.28    1705.68    -0.19
     7   2.8833  18194.96    -0.20    2051.80     0.04
     8   2.8833  18195.22     0.17    2051.79     0.02
     9   3.0059  15374.84    -0.03    3083.56     0.26
    10   3.0059  15374.91     0.11    3083.44     0.09
    11   3.9044  22754.61    -0.04    3148.56    -0.09

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.

14XS54    quality flag:2

Type:       SCATNEAR  SCATEXTD  SCATEXTD

axisobj        47.442    47.482    47.402
ecceobj         0.226     0.227     0.225
incobj         28.922    28.922    28.922
qmin           35.792    35.789    35.842
qmax           58.964    58.935    58.744
amean          47.081    47.121    47.041
amin           46.651    46.709    46.634
amax           47.598    47.626    47.554
emean           0.219     0.220     0.218
emin            0.201     0.202     0.201
emax            0.239     0.238     0.237
imean          27.362    27.360    27.363
imin           26.885    26.880    26.885
imax           27.795    27.792    27.760
excite_mean     0.509     0.510     0.509
fracstop        1.000     1.000     1.000
cjmean          2.807     2.807     2.807

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       195.1     196.3     194.4
kozaiamp        180.0     179.9     179.9