Orbit Fit and Astrometric record for 14SB404

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: 14SB404   
# Created Sat Dec  4 02:12:46 2021
# Orbit generated from Bernstein formalism
# Fitting     11 observations of     11
# Arc:   4.18y
# First observation: 2014/09/25
#  Last observation: 2018/11/29
Preliminary a, adot, b, bdot, g, gdot:
   0.000060   0.029394  -0.000006  -0.002888   0.027842   0.000000
# Chi-squared of fit:     5.10 DOF:     16 RMS:  0.12
# Min/Max residuals:    -0.23    0.19
# Exact a, adot, b, bdot, g, gdot:
  1.619327E-05  2.957238E-02 -2.051638E-06 -2.896894E-03  2.784400E-02  2.802795E-03
# Covariance matrix:
  3.4061E-13 -1.0314E-13 -4.5141E-15  3.5481E-15  1.5828E-13 -5.0431E-13
 -1.0314E-13  6.8563E-13  1.0962E-14 -6.7981E-14  4.6940E-13  6.9296E-12
 -4.5141E-15  1.0962E-14  2.8264E-13 -9.6377E-14 -4.0679E-15  1.5263E-13
  3.5481E-15 -6.7981E-14 -9.6377E-14  6.8760E-14 -4.3615E-14 -7.7331E-13
  1.5828E-13  4.6940E-13 -4.0679E-15 -4.3615E-14  8.1588E-13  4.0442E-12
 -5.0431E-13  6.9296E-12  1.5263E-13 -7.7331E-13  4.0442E-12  7.9839E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -21.575354   29.800307    0.471273   -0.326423   -0.825918  2456925.778048
# Heliocentric elements and errors
Epoch:              2456920.5000  =  2014/09/20
Mean Anomaly:           44.53122 +/-     0.072
Argument of Peri:      201.21689 +/-     0.104
Long of Asc Node:      135.22152 +/-     0.001
Inclination:            21.85598 +/-     0.000
Eccentricity:         0.10364539 +/-    0.0003
Semi-Major Axis:     39.42198118 +/-    0.0049
Time of Perihelion: 2445737.2448 +/-      18.0
Perihelion:          35.33607445 +/-    0.0114
Aphelion:            43.50788791 +/-    0.0119
Period (y)              247.5232 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.98369752 +/-    0.0009
Ecliptic Y           16.63234237 +/-    0.0005
Ecliptic Z          -13.20670094 +/-    0.0004
Ecliptic XDOT        -0.00131826 +/-    0.0000
Ecliptic YDOT         0.00259400 +/-    0.0000
Ecliptic ZDOT        -0.00036612 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.74335150 +/-    0.0008
Geocenter to KBO     35.91438416 +/-    0.0012
# Hcoef:  7.89

The following table shows the complete astrometric record for 14SB404. 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 (14SB404) followed by the observatory code and reference code for the source of the astrometry.

2014 09  25.27727  02 20 59.874  -08 49 56.70  22.8r 14SB404   W84  C~55S9      
2014 09  30.26596  02 20 38.770  -08 53 22.17  24.1r 14SB404   W84  C~55S9      
2014 10  02.35943  02 20 29.487  -08 54 46.08  23.4r 14SB404   W84  C~55S9      
2014 10  03.37378  02 20 24.889  -08 55 26.38  23.8i 14SB404   W84  C~55S9      
2014 12  16.16554  02 14 37.283  -09 15 47.38  24.1g 14SB404   W84  C~55S9      
2016 09  24.29259  02 34 14.181  -07 56 55.47  24.0r 14SB404   W84  C~55S9      
2016 12  06.07419  02 28 23.052  -08 25 21.89  22.4z 14SB404   W84  C~55S9      
2016 12  31.09494  02 27 04.415  -08 19 47.36  23.5r 14SB404   W84  C~55S9      
2017 10  21.22994  02 38 45.566  -07 46 48.00  24.2g 14SB404   W84  C~55S9      
2017 11  25.14341  02 35 45.579  -07 58 33.97  23.7r 14SB404   W84  C~55S9      
2018 11  29.21652  02 41 57.347  -07 32 12.04  23.4r 14SB404   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     0.12       0.00     0.08
     2   0.0137   -364.84    -0.07     -83.31    -0.07
     3   0.0194   -523.05     0.09    -113.92    -0.04
     4   0.0222   -600.96    -0.15    -127.91    -0.07
     5   0.2242  -5854.81     0.03     514.19     0.02
     6   1.9987  12164.87    -0.12   -1190.11     0.14
     7   2.1979   6673.69    -0.23    -930.56     0.04
     8   2.2664   5699.36     0.19    -204.80     0.13
     9   3.0717  16166.36     0.19   -2071.92    -0.14
    10   3.1673  13402.48     0.06   -1769.13    -0.16
    11   4.1778  19163.59    -0.11   -2285.29     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.

14SB404    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.748    39.764    39.732
ecceobj         0.111     0.111     0.110
incobj         21.834    21.834    21.833
qmin           34.419    34.340    34.391
qmax           44.839    44.871    44.900
amean          39.458    39.458    39.458
amin           39.103    39.097    39.107
amax           39.850    39.852    39.846
emean           0.095     0.095     0.095
emin            0.065     0.068     0.066
emax            0.126     0.127     0.129
imean          20.673    20.669    20.666
imin           20.123    20.122    20.119
imax           21.222    21.247    21.218
excite_mean     0.366     0.366     0.366
fracstop        1.000     1.000     1.000
cjmean          2.896     2.896     2.896

libcent 0       180.0     179.8     179.8
libamp  0        75.4      78.4      75.3
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       177.2     179.2     178.4
kozaiamp        180.0     180.0     180.0