Orbit Fit and Astrometric record for 14SD403

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: 14SD403   
# Created Tue Dec  7 02:12:48 2021
# Orbit generated from Bernstein formalism
# Fitting      8 observations of      8
# Arc:   4.11y
# First observation: 2013/09/05
#  Last observation: 2017/10/17
Preliminary a, adot, b, bdot, g, gdot:
  -0.000115   0.035528  -0.000233   0.005174   0.029588   0.000000
# Chi-squared of fit:     1.84 DOF:     10 RMS:  0.08
# Min/Max residuals:    -0.13    0.13
# Exact a, adot, b, bdot, g, gdot:
  2.051401E-05  3.493466E-02  2.746047E-06  5.166616E-03  2.701575E-02 -4.808852E-03
# Covariance matrix:
  1.4210E-12 -1.6992E-12  1.7013E-13 -2.7690E-13 -3.5623E-13 -9.6158E-12
 -1.6992E-12  4.3731E-12 -8.2194E-13  5.3612E-13  7.1841E-12  2.5009E-11
  1.7013E-13 -8.2194E-13  7.8012E-13 -2.2575E-13 -2.2879E-12 -4.4911E-12
 -2.7690E-13  5.3612E-13 -2.2575E-13  1.5558E-13  2.6180E-13  3.3048E-12
 -3.5623E-13  7.1841E-12 -2.2879E-12  2.6180E-13  2.8384E-11  3.6697E-11
 -9.6158E-12  2.5009E-11 -4.4911E-12  3.3048E-12  3.6697E-11  1.4670E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
  -25.403694  -61.597239   -0.700001   -0.311866   -0.656845  2456540.532578
# Heliocentric elements and errors
Epoch:              2456540.5000  =  2013/09/05
Mean Anomaly:          357.40882 +/-     0.013
Argument of Peri:      305.30063 +/-     0.043
Long of Asc Node:        9.07809 +/-     0.001
Inclination:            26.38882 +/-     0.000
Eccentricity:         0.66170433 +/-    0.0009
Semi-Major Axis:    109.48698644 +/-    0.3199
Time of Perihelion: 2459552.3728 +/-       7.5
Perihelion:          37.03897331 +/-    0.1491
Aphelion:           181.93499958 +/-    0.5413
Period (y)             1145.6500 +/-      5.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           16.86658368 +/-    0.0031
Ecliptic Y          -29.71528891 +/-    0.0058
Ecliptic Z          -15.87928535 +/-    0.0031
Ecliptic XDOT         0.00300547 +/-    0.0000
Ecliptic YDOT         0.00187257 +/-    0.0000
Ecliptic ZDOT         0.00068218 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.67800079 +/-    0.0050
Geocenter to KBO     37.01544944 +/-    0.0073
# Hcoef:  7.83

The following table shows the complete astrometric record for 14SD403. 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 (14SD403) followed by the observatory code and reference code for the source of the astrometry.

2013 09  05.03180  20 30 18.996  -45 12 25.12  24.0r 14SD403   W84  C~52UA      
2014 09  19.98626  20 39 33.444  -44 15 58.92  23.0i 14SD403   W84  C~52UA      
2014 09  25.01967  20 39 15.669  -44 13 35.97  24.0r 14SD403   W84  C~52UA      
2014 10  02.07455  20 38 56.056  -44 09 45.23  22.5i 14SD403   W84  C~52UA      
2017 09  23.05198  21 08 54.796  -41 20 03.15  23.3i 14SD403   W84  C~52UA      
2017 09  23.05337  21 08 54.804  -41 20 03.30  23.8r 14SD403   W84  C~52UA      
2017 10  13.07247  21 07 55.111  -41 10 09.90  23.6i 14SD403   W84  C~52UA      
2017 10  17.01234  21 07 49.189  -41 07 40.28  23.7r 14SD403   W84  C~52UA      

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     0.06
     2   1.0403   6625.36     0.04    1581.48     0.10
     3   1.0540   6484.98    -0.05    1774.56    -0.13
     4   1.0734   6351.24     0.03    2057.31    -0.05
     5   4.0493  28609.39     0.01    4998.96     0.12
     6   4.0493  28609.42     0.09    4998.78    -0.11
     7   4.1041  28202.88     0.01    5809.35     0.13
     8   4.1149  28197.16    -0.11    5974.78    -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.

14SD403    quality flag:2

Type:      7:1EEEEEE  SCATNEAR 7:1EEEEEE

axisobj       110.295   111.180   109.423
ecceobj         0.665     0.667     0.662
incobj         26.395    26.395    26.395
qmin           36.144    35.673    36.012
qmax          190.800   192.992   190.140
amean         110.182   111.423   110.178
amin          107.866   109.065   107.911
amax          114.083   115.443   113.628
emean           0.660     0.663     0.663
emin            0.650     0.650     0.653
emax            0.672     0.679     0.674
imean          27.074    27.114    26.736
imin           26.474    25.926    26.282
imax           27.545    28.064    27.144
excite_mean     0.802     0.805     0.801
fracstop        1.000     1.000     1.000
cjmean          2.832     2.832     2.830

libcent 0       178.7    -180.0     180.4
libamp  0       174.5    -180.0     171.0
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       182.5     162.3     206.9
kozaiamp        180.0     180.0     180.0