Orbit Fit and Astrometric record for 14SF404

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: 14SF404   
# Created Sat Dec  4 02:12:46 2021
# Orbit generated from Bernstein formalism
# Fitting     17 observations of     17
# Arc:   3.09y
# First observation: 2014/09/30
#  Last observation: 2017/11/01
Preliminary a, adot, b, bdot, g, gdot:
  -0.000100   0.033047  -0.000014  -0.001679   0.028903   0.000000
# Chi-squared of fit:     6.24 DOF:     28 RMS:  0.11
# Min/Max residuals:    -0.19    0.22
# Exact a, adot, b, bdot, g, gdot:
  1.759849E-05  3.296822E-02 -1.829496E-07 -1.668178E-03  2.909296E-02  3.217357E-05
# Covariance matrix:
  8.0521E-13 -7.6885E-13 -4.1852E-14  3.6989E-14  1.2887E-13 -5.2241E-12
 -7.6885E-13  1.1198E-12  2.2367E-14 -4.6674E-14  1.7536E-13  9.3358E-12
 -4.1852E-14  2.2367E-14  3.7943E-13 -1.7129E-13 -7.7818E-14  1.0634E-13
  3.6989E-14 -4.6674E-14 -1.7129E-13  1.0195E-13  1.8976E-14 -3.9429E-13
  1.2887E-13  1.7536E-13 -7.7818E-14  1.8976E-14  6.9170E-13  2.3987E-12
 -5.2241E-12  9.3358E-12  1.0634E-13 -3.9429E-13  2.3987E-12  8.6314E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -29.698900   13.633211    0.121077   -0.493579   -0.865702  2456930.740028
# Heliocentric elements and errors
Epoch:              2456930.5000  =  2014/09/30
Mean Anomaly:          358.45765 +/-     0.093
Argument of Peri:      266.58062 +/-     0.127
Long of Asc Node:      109.71458 +/-     0.001
Inclination:            29.04483 +/-     0.000
Eccentricity:         0.14691747 +/-    0.0001
Semi-Major Axis:     41.30555440 +/-    0.0062
Time of Perihelion: 2457345.9240 +/-      25.0
Perihelion:          35.23704683 +/-    0.0069
Aphelion:            47.37406197 +/-    0.0084
Period (y)              265.4733 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.01057874 +/-    0.0008
Ecliptic Y            7.15668102 +/-    0.0002
Ecliptic Z          -17.02965663 +/-    0.0005
Ecliptic XDOT        -0.00080893 +/-    0.0000
Ecliptic YDOT         0.00299278 +/-    0.0000
Ecliptic ZDOT        -0.00013775 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.24006419 +/-    0.0007
Geocenter to KBO     34.37257438 +/-    0.0010
# Hcoef:  8.02

The following table shows the complete astrometric record for 14SF404. 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 (14SF404) followed by the observatory code and reference code for the source of the astrometry.

2014 09  30.23925  01 38 02.900  -21 54 28.70  24.0g 14SF404   W84  C~55S9      
2014 12  26.13333  01 31 38.351  -21 52 03.35  23.2r 14SF404   W84  C~55S9      
2015 08  24.37737  01 48 02.264  -20 41 03.76  23.7r 14SF404   W84  C~55S9      
2015 10  07.23614  01 44 58.661  -21 16 21.62  23.6r 14SF404   W84  C~55S9      
2015 10  22.24717  01 43 34.192  -21 23 51.80  22.8i 14SF404   W84  C~55S9      
2015 11  06.13151  01 42 10.870  -21 27 42.86  24.5g 14SF404   W84  C~55S9      
2015 11  07.16408  01 42 05.261  -21 27 50.57  22.9z 14SF404   W84  C~55S9      
2015 11  15.21747  01 41 23.217  -21 28 07.75  23.5r 14SF404   W84  C~55S9      
2016 10  02.26103  01 52 48.744  -20 30 01.17  23.4r 14SF404   W84  C~55S9      
2016 10  02.26243  01 52 48.733  -20 30 01.23  24.2g 14SF404   W84  C~55S9      
2016 10  05.25001  01 52 32.906  -20 31 58.40  23.6r 14SF404   W84  C~55S9      
2016 10  05.25140  01 52 32.888  -20 31 58.38  23.3g 14SF404   W84  C~55S9      
2016 10  05.26160  01 52 32.831  -20 31 58.82  23.2i 14SF404   W84  C~55S9      
2017 09  18.37609  02 01 18.561  -19 34 34.58  24.6g 14SF404   W84  C~55S9      
2017 09  26.27816  02 00 42.473  -19 40 44.29  23.5r 14SF404   W84  C~55S9      
2017 09  26.27954  02 00 42.453  -19 40 44.19  23.6i 14SF404   W84  C~55S9      
2017 11  01.07755  01 57 27.304  -19 59 28.75  22.7z 14SF404   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     0.07       0.00    -0.15
     2   0.2379  -4818.45     0.02    2337.70     0.03
     3   0.8984   9460.33    -0.09     438.98    -0.05
     4   1.0185   6224.31     0.09    -371.95    -0.01
     5   1.0596   4963.81    -0.16    -276.78     0.01
     6   1.1003   3811.56     0.22       6.96     0.07
     7   1.1031   3737.31    -0.17      33.07    -0.09
     8   1.1252   3197.83    -0.12     265.24     0.20
     9   2.0069  13383.59    -0.03    -713.41    -0.03
    10   2.0069  13383.43    -0.07    -713.39    -0.01
    11   2.0151  13131.19     0.18    -721.45    -0.01
    12   2.0151  13130.97     0.08    -721.32     0.12
    13   2.0151  13130.05     0.05    -721.37     0.08
    14   2.9682  21355.10    -0.03    -919.86    -0.19
    15   2.9898  20727.10     0.01   -1021.86    -0.03
    16   2.9898  20726.89    -0.09   -1021.64     0.20
    17   3.0879  17734.94     0.05    -797.91    -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.

14SF404    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.681    41.702    41.660
ecceobj         0.155     0.155     0.154
incobj         29.046    29.046    29.046
qmin           34.716    34.771    34.833
qmax           48.367    48.371    48.258
amean          41.392    41.446    41.388
amin           41.056    41.107    41.059
amax           41.782    41.821    41.781
emean           0.139     0.141     0.138
emin            0.121     0.123     0.121
emax            0.159     0.158     0.156
imean          27.551    27.559    27.580
imin           27.058    27.055    27.112
imax           27.996    28.008    28.021
excite_mean     0.483     0.484     0.483
fracstop        1.000     1.000     1.000
cjmean          2.786     2.786     2.786

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       184.0     186.7     184.8
kozaiamp        180.0     180.0     180.0