Orbit Fit and Astrometric record for 14SD404

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: 14SD404   
# Created Tue Dec  7 02:12:48 2021
# Orbit generated from Bernstein formalism
# Fitting     17 observations of     17
# Arc:   4.12y
# First observation: 2014/09/25
#  Last observation: 2018/11/07
Preliminary a, adot, b, bdot, g, gdot:
   0.000109   0.040477  -0.000007   0.006311   0.034058   0.000000
# Chi-squared of fit:    13.08 DOF:     28 RMS:  0.16
# Min/Max residuals:    -0.40    0.33
# Exact a, adot, b, bdot, g, gdot:
  1.975026E-05  4.084325E-02  4.968434E-06  6.434377E-03  3.383255E-02  5.106665E-03
# Covariance matrix:
  2.5041E-13 -1.0118E-13  1.4643E-15 -8.9019E-15  7.3121E-14 -3.4990E-13
 -1.0118E-13  5.2067E-13 -2.1955E-14  7.6797E-14  4.1488E-13  3.4331E-12
  1.4643E-15 -2.1955E-14  2.1560E-13 -7.4351E-14 -1.8698E-14 -1.5698E-13
 -8.9019E-15  7.6797E-14 -7.4351E-14  5.2284E-14  5.4331E-14  5.6397E-13
  7.3121E-14  4.1488E-13 -1.8698E-14  5.4331E-14  6.4858E-13  2.5696E-12
 -3.4990E-13  3.4331E-12 -1.5698E-13  5.6397E-13  2.5696E-12  2.5023E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -21.992302   30.010907    0.474513   -0.331778   -0.821919  2456925.779388
# Heliocentric elements and errors
Epoch:              2456920.5000  =  2014/09/20
Mean Anomaly:           26.57053 +/-     0.020
Argument of Peri:      251.31658 +/-     0.034
Long of Asc Node:       96.80007 +/-     0.001
Inclination:            22.91216 +/-     0.000
Eccentricity:         0.19620309 +/-    0.0001
Semi-Major Axis:     36.39505465 +/-    0.0032
Time of Perihelion: 2451001.3452 +/-       4.4
Perihelion:          29.25423233 +/-    0.0043
Aphelion:            43.53587696 +/-    0.0051
Period (y)              219.5694 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.73436783 +/-    0.0006
Ecliptic Y           13.74210038 +/-    0.0003
Ecliptic Z          -11.06858387 +/-    0.0003
Ecliptic XDOT        -0.00115713 +/-    0.0000
Ecliptic YDOT         0.00314665 +/-    0.0000
Ecliptic ZDOT         0.00032816 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   30.38334781 +/-    0.0005
Geocenter to KBO     29.55733082 +/-    0.0007
# Hcoef:  8.59

The following table shows the complete astrometric record for 14SD404. 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 (14SD404) followed by the observatory code and reference code for the source of the astrometry.

2014 09  25.27861  02 22 19.772  -09 09 17.50  24.1g 14SD404   W84  C~55S9      
2014 09  25.28135  02 22 19.761  -09 09 17.25  23.4r 14SD404   W84  C~55S9      
2014 09  30.26596  02 21 54.436  -09 12 56.95  23.4r 14SD404   W84  C~55S9      
2014 10  02.35943  02 21 43.253  -09 14 26.67  23.7r 14SD404   W84  C~55S9      
2014 10  03.37378  02 21 37.756  -09 15 09.54  23.1i 14SD404   W84  C~55S9      
2014 11  21.24367  02 16 39.533  -09 35 51.28  23.4r 14SD404   W84  C~55S9      
2015 11  22.12136  02 24 56.070  -08 26 46.60  22.8z 14SD404   W84  C~55S9      
2016 09  23.26942  02 38 53.579  -06 49 12.71  22.9i 14SD404   W84  C~55S9      
2016 10  22.20749  02 36 16.515  -07 07 45.70  22.9i 14SD404   W84  C~55S9      
2016 12  31.09632  02 30 11.717  -07 09 01.78  23.6r 14SD404   W84  C~55S9      
2016 12  31.09770  02 30 11.678  -07 09 01.81  24.2g 14SD404   W84  C~55S9      
2017 09  25.32019  02 46 47.320  -05 41 21.30  22.8i 14SD404   W84  C~55S9      
2017 10  17.29434  02 44 52.847  -05 55 31.67  23.6r 14SD404   W84  C~55S9      
2017 12  15.07719  02 39 09.375  -06 07 17.59  23.4r 14SD404   W84  C~55S9      
2017 12  15.07857  02 39 09.385  -06 07 17.64  23.7g 14SD404   W84  C~55S9      
2018 11  07.24613  02 50 43.798  -04 56 02.60  24.1r 14SD404   W84  C~55S9      
2018 11  07.24752  02 50 43.773  -04 56 02.68  23.5i 14SD404   W84  C~55S9      

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    -0.14       0.00    -0.40
     2   0.0000     -0.07     0.03       0.29    -0.07
     3   0.0137   -428.15    -0.00     -74.83     0.15
     4   0.0194   -614.61    -0.13    -101.21     0.16
     5   0.0222   -705.83     0.10    -113.04     0.01
     6   0.1560  -5276.70     0.07     252.68     0.30
     7   1.1577   3062.93     0.09    1579.73    -0.18
     8   1.9959  16818.33     0.33    2644.06    -0.03
     9   2.0751  14221.49    -0.19    2439.20     0.10
    10   2.2664   9102.57     0.20    4297.89    -0.07
    11   2.2664   9102.02    -0.32    4298.07     0.05
    12   3.0008  24959.93    -0.15    3912.11    -0.08
    13   3.0610  23033.54     0.05    3733.27     0.03
    14   3.2219  17948.87    -0.08    4917.69     0.02
    15   3.2219  17948.99     0.12    4917.59    -0.13
    16   4.1176  29314.17     0.13    5183.38     0.05
    17   4.1176  29313.78    -0.12    5183.44     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.

14SD404    quality flag:3

Type:           4:3E      4:3E      4:3E
Type:          8:6II     8:6II     8:6II

axisobj        36.714    36.725    36.703
ecceobj         0.204     0.204     0.203
incobj         22.924    22.924    22.924
qmin           28.101    28.089    28.127
qmax           45.140    45.150    45.124
amean          36.474    36.474    36.474
amin           36.128    36.146    36.140
amax           36.870    36.856    36.869
emean           0.198     0.198     0.198
emin            0.166     0.167     0.168
emax            0.227     0.226     0.226
imean          21.207    21.202    21.195
imin           20.153    20.148    20.152
imax           22.247    22.245    22.231
excite_mean     0.412     0.413     0.412
fracstop        1.000     1.000     1.000
cjmean          2.837     2.837     2.837

libcent 0       179.4     180.2     180.6
libamp  0        55.6      50.9      50.2
libcent 1       175.7     178.4     176.0
libamp  1       130.2     122.5     126.3
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       269.7     269.7     269.7
kozaiamp         21.7      21.7      21.4