Orbit Fit and Astrometric record for 14SC404

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: 14SC404   
# Created Sat Dec  4 02:12:46 2021
# Orbit generated from Bernstein formalism
# Fitting     14 observations of     14
# Arc:   4.14y
# First observation: 2014/09/25
#  Last observation: 2018/11/15
Preliminary a, adot, b, bdot, g, gdot:
  -0.000364   0.038980   0.000124  -0.011509   0.032563   0.000000
# Chi-squared of fit:     8.79 DOF:     22 RMS:  0.14
# Min/Max residuals:    -0.41    0.26
# Exact a, adot, b, bdot, g, gdot:
  1.957252E-05  3.819883E-02 -3.458519E-06 -1.121381E-02  3.265158E-02 -4.942707E-03
# Covariance matrix:
  3.0180E-13 -1.7078E-13 -1.0896E-14  3.3683E-14  8.9510E-14 -8.0730E-13
 -1.7078E-13  4.7469E-13  5.3062E-14 -1.4383E-13  2.0340E-13  3.2856E-12
 -1.0896E-14  5.3062E-14  2.5550E-13 -9.8654E-14  2.5842E-14  4.0476E-13
  3.3683E-14 -1.4383E-13 -9.8654E-14  9.3182E-14 -5.3972E-14 -1.1118E-12
  8.9510E-14  2.0340E-13  2.5842E-14 -5.3972E-14  6.0777E-13  1.0863E-12
 -8.0730E-13  3.2856E-12  4.0476E-13 -1.1118E-12  1.0863E-12  2.5533E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -21.774807   29.377537    0.464686   -0.330581   -0.827993  2456925.779388
# Heliocentric elements and errors
Epoch:              2456920.5000  =  2014/09/20
Mean Anomaly:          333.51288 +/-     0.017
Argument of Peri:      276.85954 +/-     0.031
Long of Asc Node:      158.17423 +/-     0.001
Inclination:            26.71905 +/-     0.000
Eccentricity:         0.24572467 +/-    0.0001
Semi-Major Axis:     39.45525225 +/-    0.0049
Time of Perihelion: 2463580.7085 +/-       4.1
Perihelion:          29.76012344 +/-    0.0056
Aphelion:            49.15038107 +/-    0.0074
Period (y)              247.8366 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           25.78591558 +/-    0.0006
Ecliptic Y           13.98642750 +/-    0.0003
Ecliptic Z          -11.36127954 +/-    0.0003
Ecliptic XDOT        -0.00221525 +/-    0.0000
Ecliptic YDOT         0.00242660 +/-    0.0000
Ecliptic ZDOT        -0.00071934 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   31.45810339 +/-    0.0005
Geocenter to KBO     30.62638585 +/-    0.0007
# Hcoef:  8.84

The following table shows the complete astrometric record for 14SC404. 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 (14SC404) followed by the observatory code and reference code for the source of the astrometry.

2014 09  25.27861  02 19 47.428  -09 09 24.58  23.9g 14SC404   W84  C~55S9      
2014 09  30.26596  02 19 23.725  -09 13 42.65  23.4r 14SC404   W84  C~55S9      
2014 10  02.35943  02 19 13.264  -09 15 28.50  23.9r 14SC404   W84  C~55S9      
2014 10  29.30143  02 16 41.219  -09 34 46.12  23.5i 14SC404   W84  C~55S9      
2014 10  29.30417  02 16 41.204  -09 34 46.01  24.5g 14SC404   W84  C~55S9      
2015 11  05.16032  02 25 18.697  -09 28 19.14  24.3r 14SC404   W84  C~55S9      
2016 09  14.40311  02 39 01.933  -08 38 17.66  23.5i 14SC404   W84  C~55S9      
2016 09  24.30754  02 38 24.597  -08 47 17.76  23.4r 14SC404   W84  C~55S9      
2016 11  25.19103  02 32 39.023  -09 24 29.23  23.8r 14SC404   W84  C~55S9      
2017 08  25.40211  02 49 03.733  -08 07 33.74  23.9r 14SC404   W84  C~55S9      
2017 10  21.23130  02 45 34.041  -08 56 49.30  24.1g 14SC404   W84  C~55S9      
2017 12  08.12578  02 40 56.984  -09 13 48.14  23.9r 14SC404   W84  C~55S9      
2018 11  15.27555  02 52 35.577  -08 57 22.69  23.5i 14SC404   W84  C~55S9      
2018 11  15.27693  02 52 35.564  -08 57 22.73  23.6r 14SC404   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    -0.22       0.00    -0.41
     2   0.0137   -419.23    -0.02    -118.47     0.01
     3   0.0194   -601.40     0.08    -163.27     0.10
     4   0.0931  -3114.38    -0.05    -460.53    -0.00
     5   0.0932  -3114.55     0.04    -460.35     0.18
     6   1.1112   4188.43     0.26   -2792.63     0.03
     7   1.9716  16685.72     0.13   -4378.39     0.09
     8   1.9987  15969.45     0.06   -4681.10     0.05
     9   2.1681  10366.20    -0.16   -4909.19     0.12
    10   2.9161  25772.63    -0.02   -5953.61     0.10
    11   3.0717  21740.13    -0.16   -7560.45     0.08
    12   3.2029  17506.83    -0.00   -6995.19    -0.31
    13   4.1396  27625.32     0.06   -9937.61    -0.02
    14   4.1396  27625.12    -0.01   -9937.58    -0.00

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.

14SC404    quality flag:3

Type:           3:2E      3:2E      3:2E
Type:          6:4II     6:4II     6:4II

axisobj        39.743    39.756    39.730
ecceobj         0.248     0.248     0.248
incobj         26.652    26.652    26.652
qmin           28.011    27.933    27.994
qmax           51.382    51.423    51.577
amean          39.453    39.454    39.454
amin           39.017    39.019    39.044
amax           39.960    39.952    39.984
emean           0.257     0.258     0.257
emin            0.225     0.223     0.224
emax            0.288     0.290     0.290
imean          25.178    25.160    25.183
imin           24.446    24.395    24.464
imax           25.911    25.908    25.921
excite_mean     0.498     0.498     0.498
fracstop        1.000     1.000     1.000
cjmean          2.765     2.765     2.765

libcent 0       180.4     180.1     179.3
libamp  0        70.2      67.5      70.7
libcent 1       181.0     181.8     182.2
libamp  1       159.8     152.7     161.0
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       270.3     270.3     270.3
kozaiamp         18.2      18.4      18.1