Orbit Fit and Astrometric record for 14YX91

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: 14YX91    
# Created Sat Dec  4 02:13:13 2021
# Orbit generated from Bernstein formalism
# Fitting     10 observations of     10
# Arc:   4.13y
# First observation: 2014/01/05
#  Last observation: 2018/02/22
Preliminary a, adot, b, bdot, g, gdot:
   0.000366   0.028758   0.000246   0.014808   0.027821   0.000000
# Chi-squared of fit:     6.88 DOF:     14 RMS:  0.15
# Min/Max residuals:    -0.26    0.29
# Exact a, adot, b, bdot, g, gdot:
  1.708906E-05  2.936389E-02  9.510791E-06  1.520813E-02  2.780970E-02  4.223618E-03
# Covariance matrix:
  5.8015E-13 -5.7396E-13  1.4087E-13 -2.5375E-13 -2.9756E-13 -3.6601E-12
 -5.7396E-13  9.2492E-13 -2.9171E-13  5.0896E-13  2.8376E-13  6.9298E-12
  1.4087E-13 -2.9171E-13  4.4857E-13 -3.2463E-13  1.2725E-13 -2.5192E-12
 -2.5375E-13  5.0896E-13 -3.2463E-13  4.2580E-13 -1.1527E-13  4.3322E-12
 -2.9756E-13  2.8376E-13  1.2725E-13 -1.1527E-13  2.0266E-12  1.1792E-12
 -3.6601E-12  6.9298E-12 -2.5192E-12  4.3322E-12  1.1792E-12  5.7361E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -59.514228   60.694833   -0.680153   -0.609016   -0.358716  2456662.747558
# Heliocentric elements and errors
Epoch:              2456660.5000  =  2014/01/03
Mean Anomaly:           15.54898 +/-     0.018
Argument of Peri:      252.77420 +/-     0.039
Long of Asc Node:      119.74031 +/-     0.001
Inclination:            62.83570 +/-     0.000
Eccentricity:         0.35330035 +/-    0.0003
Semi-Major Axis:     53.70521506 +/-    0.0215
Time of Perihelion: 2450451.4873 +/-       6.0
Perihelion:          34.73114386 +/-    0.0202
Aphelion:            72.67928626 +/-    0.0326
Period (y)              393.5799 +/-      0.24
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            8.68053954 +/-    0.0004
Ecliptic Y           16.86019284 +/-    0.0008
Ecliptic Z          -30.98746507 +/-    0.0016
Ecliptic XDOT        -0.00179217 +/-    0.0000
Ecliptic YDOT         0.00272167 +/-    0.0000
Ecliptic ZDOT         0.00040139 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.32961410 +/-    0.0014
Geocenter to KBO     35.95867630 +/-    0.0018
# Hcoef:  8.24

The following table shows the complete astrometric record for 14YX91. 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 (14YX91) followed by the observatory code and reference code for the source of the astrometry.

2014 01  05.24678  04 46 36.195  -37 55 40.20  24.6g 14YX91    W84  C~52Uq      
2014 01  05.24816  04 46 36.178  -37 55 39.69  23.6r 14YX91    W84  C~52Uq      
2014 12  23.21984  04 55 04.193  -36 48 50.94  23.6i 14YX91    W84  C~52Uq      
2014 12  23.22122  04 55 04.171  -36 48 51.08  24.0g 14YX91    W84  C~52Uq      
2014 12  23.22260  04 55 04.162  -36 48 50.75  23.7r 14YX91    W84  C~52Uq      
2015 01  21.13880  04 52 14.906  -36 24 06.62  24.7g 14YX91    W84  C~52Uq      
2015 01  26.19751  04 51 53.224  -36 18 01.51  24.4g 14YX91    W84  C~52Uq      
2015 12  10.32639  05 03 19.466  -35 36 00.52  24.3r 14YX91    W84  C~52Uq      
2018 01  22.17390  05 11 29.376  -32 33 13.14  23.8r 14YX91    W84  C~52Uq      
2018 02  22.06660  05 09 57.165  -31 53 22.08  24.1r 14YX91    W84  C~52Uq      

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    -0.08       0.00    -0.18
     2   0.0000     -0.07    -0.07       0.54     0.27
     3   0.9636   6887.04     0.16    2313.86     0.09
     4   0.9637   6886.75    -0.03    2313.79    -0.05
     5   0.9637   6886.73     0.05    2314.14     0.22
     6   1.0428   5313.46    -0.26    4286.06    -0.11
     7   1.0567   5155.76     0.29    4707.13    -0.18
     8   1.9277  13882.50    -0.03    4847.03    -0.14
     9   4.0463  23063.48     0.00   13573.13     0.01
    10   4.1309  22683.38    -0.04   16235.54     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.

14YX91    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        54.224    54.294    54.155
ecceobj         0.360     0.361     0.359
incobj         62.857    62.857    62.856
qmin           33.937    33.640    33.925
qmax           73.946    74.459    73.864
amean          53.544    53.616    53.476
amin           53.017    53.078    52.958
amax           54.224    54.314    54.158
emean           0.354     0.358     0.353
emin            0.344     0.345     0.343
emax            0.365     0.371     0.364
imean          61.279    61.242    61.281
imin           61.033    60.977    61.044
imax           61.531    61.524    61.521
excite_mean     0.946     0.947     0.945
fracstop        1.000     1.000     1.000
cjmean          1.761     1.761     1.761

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       252.3     252.9     252.4
kozaiamp          1.8       2.2       1.8