Orbit Fit and Astrometric record for 14SA404

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: 14SA404   
# Created Fri Dec  3 02:12:42 2021
# Orbit generated from Bernstein formalism
# Fitting     12 observations of     12
# Arc:   4.18y
# First observation: 2014/09/25
#  Last observation: 2018/11/29
Preliminary a, adot, b, bdot, g, gdot:
   0.000050   0.027563  -0.000003  -0.000874   0.025913   0.000000
# Chi-squared of fit:     3.62 DOF:     18 RMS:  0.10
# Min/Max residuals:    -0.18    0.25
# Exact a, adot, b, bdot, g, gdot:
  1.709791E-05  2.797565E-02  3.535599E-07 -8.722663E-04  2.603795E-02  5.135471E-03
# Covariance matrix:
  2.2604E-13 -8.8436E-14 -9.0259E-16 -1.2632E-15  8.6465E-14 -6.1149E-13
 -8.8436E-14  6.7767E-13  1.7441E-15 -1.8323E-14  4.1775E-13  7.4653E-12
 -9.0259E-16  1.7441E-15  2.0293E-13 -6.8805E-14 -2.5713E-15  3.5167E-14
 -1.2632E-15 -1.8323E-14 -6.8805E-14  6.0845E-14 -2.0565E-14 -1.9084E-13
  8.6465E-14  4.1775E-13 -2.5713E-15 -2.0565E-14  7.2420E-13  3.3926E-12
 -6.1149E-13  7.4653E-12  3.5167E-14 -1.9084E-13  3.3926E-12  9.6473E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -20.938854   30.278197    0.478685   -0.315809   -0.825783  2456925.776658
# Heliocentric elements and errors
Epoch:              2456920.5000  =  2014/09/20
Mean Anomaly:           32.09564 +/-     0.025
Argument of Peri:      212.25623 +/-     0.055
Long of Asc Node:      125.71223 +/-     0.001
Inclination:            20.58611 +/-     0.000
Eccentricity:         0.24693271 +/-    0.0003
Semi-Major Axis:     48.13937399 +/-    0.0112
Time of Perihelion: 2446043.9121 +/-       7.7
Perihelion:          36.25218806 +/-    0.0184
Aphelion:            60.02655993 +/-    0.0215
Period (y)              334.0095 +/-      0.12
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           31.97837263 +/-    0.0010
Ecliptic Y           18.11954375 +/-    0.0006
Ecliptic Z          -13.72504148 +/-    0.0004
Ecliptic XDOT        -0.00108057 +/-    0.0000
Ecliptic YDOT         0.00277349 +/-    0.0000
Ecliptic ZDOT        -0.00027852 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.23405339 +/-    0.0009
Geocenter to KBO     38.40548617 +/-    0.0013
# Hcoef:  7.96

The following table shows the complete astrometric record for 14SA404. 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 (14SA404) followed by the observatory code and reference code for the source of the astrometry.

2014 09  25.27588  02 21 47.413  -08 04 50.46  23.4i 14SA404   W84  C~55S9      
2014 09  25.27727  02 21 47.401  -08 04 50.26  24.4r 14SA404   W84  C~55S9      
2014 09  25.27861  02 21 47.400  -08 04 50.29  24.3g 14SA404   W84  C~55S9      
2014 09  30.26596  02 21 27.706  -08 07 55.18  23.7r 14SA404   W84  C~55S9      
2014 10  03.36677  02 21 14.786  -08 09 46.88  23.7r 14SA404   W84  C~55S9      
2014 10  03.37378  02 21 14.747  -08 09 46.86  23.4i 14SA404   W84  C~55S9      
2014 12  12.17803  02 16 01.466  -08 28 45.35  23.5i 14SA404   W84  C~55S9      
2016 09  11.27079  02 34 36.938  -06 55 26.96  23.5i 14SA404   W84  C~55S9      
2016 10  27.19138  02 31 32.655  -07 21 12.60  23.9r 14SA404   W84  C~55S9      
2016 12  31.09494  02 27 15.749  -07 23 58.39  23.8r 14SA404   W84  C~55S9      
2017 12  23.15460  02 33 30.179  -06 56 32.15  24.6r 14SA404   W84  C~55S9      
2018 11  29.21652  02 40 51.099  -06 28 30.56  24.1r 14SA404   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    -0.02       0.00    -0.18
     2   0.0000     -0.10    -0.03       0.25     0.09
     3   0.0000     -0.12     0.04       0.23     0.09
     4   0.0137   -338.56    -0.02     -71.74    -0.05
     5   0.0222   -557.23     0.08    -110.00    -0.16
     6   0.0222   -557.76     0.05    -109.78     0.14
     7   0.2133  -5315.92    -0.07     426.47     0.01
     8   1.9630  12191.34    -0.06    -111.49     0.08
     9   2.0887   9071.15    -0.07    -589.69    -0.15
    10   2.2664   5430.00     0.07     597.81     0.25
    11   3.2440  11235.35     0.05     179.41    -0.03
    12   4.1778  18007.42    -0.01    -582.89    -0.07

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.

14SA404    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        48.667    48.703    48.631
ecceobj         0.255     0.256     0.254
incobj         20.578    20.578    20.578
qmin           34.478    34.562    34.053
qmax           62.409    62.490    62.411
amean          47.758    48.215    47.817
amin           46.996    47.580    46.962
amax           48.722    48.814    48.687
emean           0.254     0.256     0.244
emin            0.214     0.231     0.206
emax            0.282     0.281     0.289
imean          18.999    19.006    18.856
imin           17.974    18.089    17.973
imax           20.043    20.013    19.875
excite_mean     0.413     0.414     0.405
fracstop        1.000     1.000     1.000
cjmean          2.934     2.938     2.942

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       180.5     185.3     184.4
kozaiamp        180.0     180.0     180.0