Orbit Fit and Astrometric record for 14SJ404

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: 14SJ404   
# Created Sat Nov 27 02:12:48 2021
# Orbit generated from Bernstein formalism
# Fitting     22 observations of     22
# Arc:   4.17y
# First observation: 2014/09/30
#  Last observation: 2018/12/03
Preliminary a, adot, b, bdot, g, gdot:
  -0.000095   0.042023  -0.000071   0.004029   0.033631   0.000000
# Chi-squared of fit:     8.63 DOF:     38 RMS:  0.11
# Min/Max residuals:    -0.33    0.25
# Exact a, adot, b, bdot, g, gdot:
  1.869377E-05  4.158149E-02  1.906073E-06  3.997824E-03  3.350677E-02 -3.299015E-03
# Covariance matrix:
  2.4799E-13 -1.0917E-13 -4.9887E-15 -8.8195E-15  1.0433E-13 -4.5892E-13
 -1.0917E-13  3.2873E-13 -1.6412E-14  3.8962E-14  9.8751E-14  2.2190E-12
 -4.9887E-15 -1.6412E-14  1.7287E-13 -5.6781E-14 -1.9892E-14 -1.1460E-13
 -8.8195E-15  3.8962E-14 -5.6781E-14  3.3819E-14  9.6087E-15  2.8968E-13
  1.0433E-13  9.8751E-14 -1.9892E-14  9.6087E-15  2.5497E-13  6.2624E-13
 -4.5892E-13  2.2190E-12 -1.1460E-13  2.8968E-13  6.2624E-13  1.6462E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -23.685225   26.272882    0.335900   -0.379861   -0.866362  2456930.758288
# Heliocentric elements and errors
Epoch:              2456930.5000  =  2014/09/30
Mean Anomaly:          342.84247 +/-     0.016
Argument of Peri:      310.10740 +/-     0.028
Long of Asc Node:      102.34342 +/-     0.001
Inclination:            23.53717 +/-     0.000
Eccentricity:         0.23271965 +/-    0.0001
Semi-Major Axis:     39.14962346 +/-    0.0031
Time of Perihelion: 2461194.7435 +/-       4.1
Perihelion:          30.03873674 +/-    0.0034
Aphelion:            48.26051017 +/-    0.0045
Period (y)              244.9625 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           25.50167807 +/-    0.0004
Ecliptic Y           12.21724450 +/-    0.0002
Ecliptic Z          -11.98895441 +/-    0.0002
Ecliptic XDOT        -0.00161226 +/-    0.0000
Ecliptic YDOT         0.00299084 +/-    0.0000
Ecliptic ZDOT         0.00040755 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   30.71370501 +/-    0.0003
Geocenter to KBO     29.84471792 +/-    0.0004
# Hcoef:  8.52

The following table shows the complete astrometric record for 14SJ404. 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 (14SJ404) followed by the observatory code and reference code for the source of the astrometry.

2014 09  30.25751  02 11 41.528  -11 57 55.21  24.1g 14SJ404   W84  C~55S9      
2014 10  02.36220  02 11 30.133  -11 59 27.77  23.8g 14SJ404   W84  C~55S9      
2014 10  02.37780  02 11 30.049  -11 59 28.54  23.6r 14SJ404   W84  C~55S9      
2014 10  31.29779  02 08 35.893  -12 15 49.11  23.0r 14SJ404   W84  C~55S9      
2014 11  28.20641  02 05 53.852  -12 19 35.99  24.1g 14SJ404   W84  C~55S9      
2014 11  28.20778  02 05 53.836  -12 19 35.79  23.7r 14SJ404   W84  C~55S9      
2014 12  15.17159  02 04 40.348  -12 15 05.72  23.0r 14SJ404   W84  C~55S9      
2014 12  20.15491  02 04 24.126  -12 12 48.53  23.6r 14SJ404   W84  C~55S9      
2015 12  04.19156  02 14 06.350  -11 14 25.62  23.4r 14SJ404   W84  C~55S9      
2016 09  11.39762  02 30 25.809  -09 31 24.14  22.9i 14SJ404   W84  C~55S9      
2016 09  23.30963  02 29 38.083  -09 40 49.30  23.3r 14SJ404   W84  C~55S9      
2016 11  25.18965  02 23 30.127  -10 09 25.74  23.7r 14SJ404   W84  C~55S9      
2017 01  30.03915  02 20 55.686  -09 33 29.46  23.1i 14SJ404   W84  C~55S9      
2017 08  25.40072  02 39 42.649  -08 10 27.16  22.2i 14SJ404   W84  C~55S9      
2017 10  21.23270  02 35 49.378  -08 51 34.93  23.4i 14SJ404   W84  C~55S9      
2017 10  21.23408  02 35 49.373  -08 51 35.00  23.5r 14SJ404   W84  C~55S9      
2017 11  25.16162  02 32 13.153  -09 02 11.06  23.2i 14SJ404   W84  C~55S9      
2017 12  09.11803  02 30 59.487  -09 00 51.54  23.1r 14SJ404   W84  C~55SA      
2017 12  15.08130  02 30 32.673  -08 59 15.50  24.4g 14SJ404   W84  C~55SA      
2018 11  17.19558  02 41 44.571  -07 52 44.10  22.6i 14SJ404   W84  C~55SA      
2018 11  29.21652  02 40 32.907  -07 53 47.39  23.1r 14SJ404   W84  C~55SA      
2018 12  03.12424  02 40 11.232  -07 53 36.97  24.2g 14SJ404   W84  C~55SA      

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     0.19       0.00    -0.00
     2   0.0058   -189.44    -0.02     -25.24     0.07
     3   0.0058   -190.87    -0.01     -25.51    -0.03
     4   0.0850  -2926.83    -0.09     -11.46    -0.03
     5   0.1614  -5224.52    -0.02     633.99    -0.09
     6   0.1614  -5224.67    -0.08     634.26     0.14
     7   0.2078  -6133.62    -0.04    1273.43     0.02
     8   0.2215  -6306.62     0.08    1486.88    -0.04
     9   1.1771   2934.94     0.07    1651.10     0.07
    10   1.9497  18699.84    -0.08    2003.21    -0.08
    11   1.9823  17825.64    -0.04    1745.91    -0.12
    12   2.1545  12112.02    -0.15    2199.26     0.06
    13   2.3348  10794.80     0.06    5055.51     0.03
    14   2.9025  28308.41     0.03    3358.55    -0.33
    15   3.0581  24098.03     0.02    2394.48    -0.01
    16   3.0581  24097.93     0.06    2394.45    -0.05
    17   3.1537  20855.50    -0.10    3028.69     0.25
    18   3.1920  19866.62     0.15    3517.94    -0.02
    19   3.2083  19532.44     0.04    3758.15     0.17
    20   4.1312  30431.87    -0.12    3647.87    -0.28
    21   4.1642  29403.97     0.05    4002.04     0.18
    22   4.1749  29104.95     0.01    4136.51     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.

14SJ404    quality flag:3

Type:       CENTAURS  CENTAURS  CENTAURS

axisobj        39.491    39.501    39.482
ecceobj         0.238     0.238     0.238
incobj         23.547    23.547    23.547
qmin           29.213    29.249    29.190
qmax           50.609    50.392    50.612
amean          39.469    39.477    39.386
amin           38.893    38.917    38.762
amax           40.106    40.100    40.238
emean           0.104     0.136     0.191
emin            0.013     0.055     0.132
emax            0.262     0.259     0.262
imean          24.064    23.761    22.409
imin           20.669    20.808    20.020
imax           25.559    25.407    24.729
excite_mean     0.429     0.431     0.427
fracstop        1.000     1.000     1.000
cjmean          2.835     2.833     2.840

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       151.9     159.4     168.0
kozaiamp        180.0     180.0     180.0