Orbit Fit and Astrometric record for 14SH404

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: 14SH404   
# Created Tue Dec  7 02:12:49 2021
# Orbit generated from Bernstein formalism
# Fitting     11 observations of     11
# Arc:   4.13y
# First observation: 2014/09/30
#  Last observation: 2018/11/16
Preliminary a, adot, b, bdot, g, gdot:
  -0.000088   0.023254  -0.000098  -0.002258   0.022782   0.000000
# Chi-squared of fit:     2.13 DOF:     16 RMS:  0.08
# Min/Max residuals:    -0.15    0.21
# Exact a, adot, b, bdot, g, gdot:
  1.575605E-05  2.269900E-02 -1.712518E-06 -2.221790E-03  2.237942E-02 -7.504639E-03
# Covariance matrix:
  7.5897E-13 -3.6632E-13 -2.9869E-14  1.8887E-14  6.3680E-14 -2.3733E-12
 -3.6632E-13  5.8731E-13 -1.1863E-14 -4.0223E-14  2.8922E-13  6.1062E-12
 -2.9869E-14 -1.1863E-14  6.5051E-13 -1.8755E-13 -9.3888E-14 -7.5320E-15
  1.8887E-14 -4.0223E-14 -1.8755E-13  7.2200E-14 -9.8734E-15 -4.9261E-13
  6.3680E-14  2.8922E-13 -9.3888E-14 -9.8734E-15  5.8310E-13  2.7668E-12
 -2.3733E-12  6.1062E-12 -7.5320E-15 -4.9261E-13  2.7668E-12  7.2863E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -27.795216   20.887731    0.245804   -0.453714   -0.861068  2456930.748438
# Heliocentric elements and errors
Epoch:              2456930.5000  =  2014/09/30
Mean Anomaly:          334.59463 +/-     0.018
Argument of Peri:      323.81474 +/-     0.030
Long of Asc Node:      122.70293 +/-     0.001
Inclination:            27.75734 +/-     0.000
Eccentricity:         0.44596511 +/-    0.0004
Semi-Major Axis:     67.72525082 +/-    0.0321
Time of Perihelion: 2471296.8792 +/-       2.1
Perihelion:          37.52215214 +/-    0.0325
Aphelion:            97.92834949 +/-    0.0539
Period (y)              557.3579 +/-      0.40
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.92475172 +/-    0.0013
Ecliptic Y           14.21265571 +/-    0.0005
Ecliptic Z          -20.83678177 +/-    0.0007
Ecliptic XDOT        -0.00187191 +/-    0.0000
Ecliptic YDOT         0.00225506 +/-    0.0000
Ecliptic ZDOT         0.00018779 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.54621664 +/-    0.0011
Geocenter to KBO     44.68391211 +/-    0.0015
# Hcoef:  7.39

The following table shows the complete astrometric record for 14SH404. 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 (14SH404) followed by the observatory code and reference code for the source of the astrometry.

2014 09  30.24766  01 59 31.171  -17 36 00.99  23.0r 14SH404   W84  C~55S9      
2015 01  14.07664  01 54 03.991  -17 32 20.75  24.3r 14SH404   W84  C~55S9      
2016 09  08.20890  02 11 15.268  -16 33 54.31  23.3i 14SH404   W84  C~55S9      
2016 10  02.24299  02 09 55.521  -16 49 08.06  24.0r 14SH404   W84  C~55S9      
2017 11  23.13521  02 11 35.575  -16 39 30.54  23.9i 14SH404   W84  C~55S9      
2017 11  23.13661  02 11 35.558  -16 39 30.51  23.6r 14SH404   W84  C~55S9      
2017 12  22.09941  02 10 04.637  -16 33 21.66  24.0r 14SH404   W84  C~55S9      
2018 01  18.08315  02 09 37.382  -16 18 33.70  24.2r 14SH404   W84  C~55S9      
2018 10  20.32428  02 19 29.075  -16 06 09.10  23.6i 14SH404   W84  C~55S9      
2018 11  16.26359  02 17 29.104  -16 13 18.11  24.0r 14SH404   W84  C~55S9      
2018 11  16.26498  02 17 29.087  -16 13 17.89  24.5g 14SH404   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     0.06       0.00     0.03
     2   0.2897  -4230.60    -0.03    2012.15     0.11
     3   1.9410  10754.92    -0.09    -586.51    -0.15
     4   2.0068   9334.72     0.02    -961.40    -0.07
     5   3.1482  10886.54     0.07   -1012.60    -0.07
     6   3.1482  10886.33    -0.07   -1012.47     0.03
     7   3.2275   9836.37     0.09    -146.79     0.04
     8   3.3014   9834.32    -0.07     825.01    -0.05
     9   4.0550  17959.20     0.01   -1974.48    -0.01
    10   4.1287  16195.29     0.03   -1651.68    -0.06
    11   4.1287  16195.16    -0.02   -1651.37     0.21

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.

14SH404    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        68.553    68.639    68.467
ecceobj         0.449     0.450     0.448
incobj         27.744    27.743    27.744
qmin           36.207    36.509    36.271
qmax          100.820   100.604   100.531
amean          67.694    67.745    67.592
amin           66.831    66.932    66.732
amax           68.855    68.895    68.718
emean           0.447     0.446     0.445
emin            0.430     0.433     0.429
emax            0.465     0.460     0.463
imean          26.065    26.170    26.079
imin           25.393    25.664    25.435
imax           26.881    26.657    26.827
excite_mean     0.627     0.627     0.626
fracstop        1.000     1.000     1.000
cjmean          2.855     2.855     2.855

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       176.0     157.3     173.1
kozaiamp        180.0     179.9     180.0