Orbit Fit and Astrometric record for 14ST403

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: 14ST403   
# Created Fri Dec  3 02:12:41 2021
# Orbit generated from Bernstein formalism
# Fitting      8 observations of      8
# Arc:   4.13y
# First observation: 2014/09/24
#  Last observation: 2018/11/09
Preliminary a, adot, b, bdot, g, gdot:
   0.000207   0.025188  -0.000035  -0.006887   0.026261   0.000000
# Chi-squared of fit:     7.34 DOF:     10 RMS:  0.17
# Min/Max residuals:    -0.25    0.24
# Exact a, adot, b, bdot, g, gdot:
  1.580992E-05  2.536932E-02 -4.185663E-06 -6.833540E-03  2.487028E-02 -1.115079E-03
# Covariance matrix:
  5.2678E-13 -4.5561E-13 -4.1050E-15  3.4326E-14  5.3035E-13 -3.5748E-12
 -4.5561E-13  1.1948E-12  1.7143E-14 -1.3502E-13 -1.5545E-12  1.2263E-11
 -4.1050E-15  1.7143E-14  4.3309E-13 -1.3739E-13  7.2879E-14  1.5296E-13
  3.4326E-14 -1.3502E-13 -1.3739E-13  1.1534E-13 -3.4818E-13 -1.2833E-12
  5.3035E-13 -1.5545E-12  7.2879E-14 -3.4818E-13  1.1285E-11 -2.0098E-11
 -3.5748E-12  1.2263E-11  1.5296E-13 -1.2833E-12 -2.0098E-11  1.3456E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
  -26.930134  -56.923103   -0.848969   -0.244095   -0.480816  2456924.561118
# Heliocentric elements and errors
Epoch:              2456920.5000  =  2014/09/20
Mean Anomaly:          352.34863 +/-     0.155
Argument of Peri:      253.88195 +/-     0.211
Long of Asc Node:       64.38995 +/-     0.001
Inclination:            30.01250 +/-     0.000
Eccentricity:         0.14932606 +/-    0.0004
Semi-Major Axis:     47.73806859 +/-    0.0333
Time of Perihelion: 2459481.0453 +/-      51.6
Perihelion:          40.60953085 +/-    0.0352
Aphelion:            54.86660633 +/-    0.0436
Period (y)              329.8416 +/-      0.35
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           20.56851785 +/-    0.0026
Ecliptic Y          -30.02550856 +/-    0.0041
Ecliptic Z          -18.21080057 +/-    0.0025
Ecliptic XDOT         0.00208985 +/-    0.0000
Ecliptic YDOT         0.00189682 +/-    0.0000
Ecliptic ZDOT        -0.00061499 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.69678548 +/-    0.0035
Geocenter to KBO     40.20863717 +/-    0.0054
# Hcoef:  7.60

The following table shows the complete astrometric record for 14ST403. 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 (14ST403) followed by the observatory code and reference code for the source of the astrometry.

2014 09  24.06034  20 55 40.920  -45 27 17.87  24.2r 14ST403   W84  C~55S8      
2014 09  27.04258  20 55 30.274  -45 26 18.25  23.5r 14ST403   W84  C~55S8      
2014 10  13.03244  20 54 50.901  -45 19 14.52  23.8r 14ST403   W84  C~55S8      
2016 09  09.09336  21 13 55.216  -45 15 45.45  23.5i 14ST403   W84  C~55S8      
2016 09  23.01557  21 12 48.094  -45 13 21.61  24.3g 14ST403   W84  C~55S8      
2017 10  13.06409  21 20 12.337  -44 55 15.99  23.3i 14ST403   W84  C~55S8      
2018 11  06.10973  21 28 13.680  -44 28 05.80  24.4r 14ST403   W84  C~55S8      
2018 11  09.09384  21 28 16.083  -44 25 55.07  23.3g 14ST403   W84  C~55S8      

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     0.07       0.00    -0.03
     2   0.0082    -88.11     0.22      91.34    -0.14
     3   0.0519   -352.28    -0.23     622.24     0.22
     4   1.9604  11105.00    -0.25   -3229.84     0.11
     5   1.9985  10494.00     0.03   -2838.80    -0.08
     6   3.0527  15287.22     0.24   -3576.37    -0.24
     7   4.1179  20690.23     0.15   -4095.46     0.05
     8   4.1260  20767.17    -0.22   -3985.69     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.

14ST403    quality flag:2

Type:       SCATEXTD  SCATEXTD  SCATNEAR

axisobj        47.946    48.048    47.845
ecceobj         0.154     0.155     0.153
incobj         30.060    30.060    30.060
qmin           39.988    40.048    38.569
qmax           56.468    56.606    57.839
amean          48.045    48.134    47.813
amin           47.612    47.726    47.216
amax           48.518    48.599    48.438
emean           0.142     0.144     0.145
emin            0.120     0.126     0.099
emax            0.165     0.165     0.194
imean          28.964    28.963    28.893
imin           28.664    28.681    28.205
imax           29.193    29.309    29.366
excite_mean     0.505     0.505     0.505
fracstop        1.000     1.000     1.000
cjmean          2.814     2.815     2.812

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       187.6     179.5     180.9
kozaiamp        180.0     180.0     180.0