Orbit Fit and Astrometric record for 14SR404

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: 14SR404   
# Created Tue Nov 30 02:12:47 2021
# Orbit generated from Bernstein formalism
# Fitting     15 observations of     15
# Arc:   3.07y
# First observation: 2014/09/26
#  Last observation: 2017/10/21
Preliminary a, adot, b, bdot, g, gdot:
   0.000034   0.020368  -0.000046   0.005557   0.022635   0.000000
# Chi-squared of fit:     6.46 DOF:     24 RMS:  0.12
# Min/Max residuals:    -0.28    0.29
# Exact a, adot, b, bdot, g, gdot:
  1.336151E-05  2.031611E-02  3.951078E-06  5.524574E-03  2.249821E-02 -3.525939E-03
# Covariance matrix:
  2.8003E-13 -3.3083E-13  6.0912E-15 -8.9828E-14  2.1802E-13 -4.4633E-12
 -3.3083E-13  9.3707E-13 -7.6214E-14  3.1447E-13 -1.8680E-13  1.5871E-11
  6.0912E-15 -7.6214E-14  2.3263E-13 -1.1981E-13 -2.1920E-13 -1.3070E-12
 -8.9828E-14  3.1447E-13 -1.1981E-13  2.0328E-13 -1.1625E-13  5.8888E-12
  2.1802E-13 -1.8680E-13 -2.1920E-13 -1.1625E-13  2.6669E-12 -4.7603E-12
 -4.4633E-12  1.5871E-11 -1.3070E-12  5.8888E-12 -4.7603E-12  2.9666E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
  -27.641003  -48.669245   -0.784571   -0.291352   -0.556644  2456926.593968
# Heliocentric elements and errors
Epoch:              2456920.5000  =  2014/09/20
Mean Anomaly:          286.75970 +/-     0.074
Argument of Peri:       28.03799 +/-     0.090
Long of Asc Node:       10.76948 +/-     0.001
Inclination:            31.20236 +/-     0.000
Eccentricity:         0.14871502 +/-    0.0008
Semi-Major Axis:     46.00335602 +/-    0.0148
Time of Perihelion: 2480106.7386 +/-      20.6
Perihelion:          39.16196598 +/-    0.0393
Aphelion:            52.84474605 +/-    0.0409
Period (y)              312.0272 +/-      0.15
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           27.00571826 +/-    0.0019
Ecliptic Y          -29.51921465 +/-    0.0022
Ecliptic Z          -20.62061668 +/-    0.0015
Ecliptic XDOT         0.00180679 +/-    0.0000
Ecliptic YDOT         0.00167935 +/-    0.0000
Ecliptic ZDOT         0.00079474 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.01002871 +/-    0.0019
Geocenter to KBO     44.44797872 +/-    0.0032
# Hcoef:  7.19

The following table shows the complete astrometric record for 14SR404. 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 (14SR404) followed by the observatory code and reference code for the source of the astrometry.

2014 09  26.09319  21 35 48.851  -43 39 00.45  23.7i 14SR404   W84  C~55SB      
2014 10  22.02688  21 34 29.333  -43 27 48.82  23.5i 14SR404   W84  C~55SB      
2014 10  22.14680  21 34 29.099  -43 27 44.19  23.5i 14SR404   W84  C~55SB      
2014 10  23.02664  21 34 27.663  -43 27 14.02  23.9r 14SR404   W84  C~55SB      
2014 10  23.07954  21 34 27.573  -43 27 11.98  24.3r 14SR404   W84  C~55SB      
2014 10  29.02211  21 34 20.058  -43 23 33.40  23.3r 14SR404   W84  C~55SB      
2015 09  13.10490  21 42 10.554  -42 57 37.68  23.4i 14SR404   W84  C~55SB      
2015 09  13.10626  21 42 10.552  -42 57 37.59  23.8r 14SR404   W84  C~55SB      
2015 09  13.10904  21 42 10.538  -42 57 37.71  23.6i 14SR404   W84  C~55SB      
2015 09  13.11041  21 42 10.533  -42 57 37.42  23.5r 14SR404   W84  C~55SB      
2016 10  22.02362  21 44 53.723  -42 00 07.57  23.7i 14SR404   W84  C~55SB      
2016 10  22.02499  21 44 53.709  -42 00 07.12  24.0r 14SR404   W84  C~55SB      
2016 10  22.02636  21 44 53.707  -42 00 07.38  24.2g 14SR404   W84  C~55SB      
2017 10  13.09607  21 50 22.141  -41 18 57.36  23.6i 14SR404   W84  C~55SB      
2017 10  21.00733  21 50 01.565  -41 15 15.16  23.0r 14SR404   W84  C~55SB      

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     0.19       0.00    -0.01
     2   0.0710   -563.45    -0.07     938.51    -0.20
     3   0.0713   -564.16    -0.08     943.75     0.29
     4   0.0737   -567.92    -0.07     977.52    -0.15
     5   0.0739   -568.10    -0.01     979.78     0.01
     6   0.0902   -566.02     0.01    1213.18     0.03
     7   0.9638   4791.80    -0.06     755.09     0.00
     8   0.9638   4791.82     0.02     755.18     0.06
     9   0.9638   4791.63    -0.02     755.13    -0.07
    10   0.9638   4791.69     0.11     755.42     0.18
    11   2.0724   7787.70    -0.00    3248.18    -0.28
    12   2.0724   7787.73     0.04    3248.66     0.15
    13   2.0724   7787.61    -0.07    3248.43    -0.14
    14   3.0472  12156.26    -0.05    4064.97     0.12
    15   3.0689  12033.03     0.06    4362.25     0.01

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.

14SR404    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        46.186    46.228    46.145
ecceobj         0.152     0.153     0.151
incobj         31.163    31.163    31.163
qmin           38.417    38.485    38.384
qmax           54.428    54.509    54.388
amean          46.241    46.282    46.186
amin           45.862    45.899    45.788
amax           46.673    46.710    46.632
emean           0.152     0.153     0.151
emin            0.138     0.139     0.137
emax            0.167     0.168     0.167
imean          31.269    31.268    31.271
imin           30.984    30.975    30.987
imax           31.592    31.595    31.598
excite_mean     0.541     0.541     0.541
fracstop        1.000     1.000     1.000
cjmean          2.745     2.745     2.745

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       178.5     178.1     181.0
kozaiamp        179.9     179.9     179.9