Orbit Fit and Astrometric record for 14YD92

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: 14YD92    
# Created Sun Dec  5 02:13:04 2021
# Orbit generated from Bernstein formalism
# Fitting     17 observations of     17
# Arc:   3.92y
# First observation: 2014/12/16
#  Last observation: 2018/11/15
Preliminary a, adot, b, bdot, g, gdot:
   0.000026   0.020024  -0.000029  -0.005697   0.020842   0.000000
# Chi-squared of fit:     7.26 DOF:     28 RMS:  0.12
# Min/Max residuals:    -0.30    0.27
# Exact a, adot, b, bdot, g, gdot:
  1.556819E-05  2.011702E-02 -4.065923E-06 -5.728445E-03  2.034643E-02  1.950352E-03
# Covariance matrix:
  2.0435E-13 -1.5800E-13 -6.0276E-15  2.8664E-14 -1.4647E-14 -1.2509E-12
 -1.5800E-13  5.3771E-13  3.5526E-14 -1.5067E-13 -1.6605E-13  5.9958E-12
 -6.0276E-15  3.5526E-14  1.8535E-13 -7.0656E-14 -2.9554E-14  3.9812E-13
  2.8664E-14 -1.5067E-13 -7.0656E-14  8.2720E-14  6.7582E-14 -1.7773E-12
 -1.4647E-14 -1.6605E-13 -2.9554E-14  6.7582E-14  9.3612E-13 -6.3463E-13
 -1.2509E-12  5.9958E-12  3.9812E-13 -1.7773E-12 -6.3463E-13  7.3880E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -33.635712   29.694446   -0.796440   -0.319549   -0.480674  2457007.699858
# Heliocentric elements and errors
Epoch:              2457000.5000  =  2014/12/09
Mean Anomaly:           10.57389 +/-     0.033
Argument of Peri:      224.63647 +/-     0.077
Long of Asc Node:      147.50138 +/-     0.001
Inclination:            36.28884 +/-     0.000
Eccentricity:         0.35258372 +/-    0.0004
Semi-Major Axis:     75.03754426 +/-    0.0360
Time of Perihelion: 2450027.0321 +/-      21.5
Perihelion:          48.58052790 +/-    0.0357
Aphelion:           101.49456062 +/-    0.0557
Period (y)              650.0191 +/-      0.47
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.64998884 +/-    0.0017
Ecliptic Y           21.25005710 +/-    0.0010
Ecliptic Z          -27.22420186 +/-    0.0013
Ecliptic XDOT        -0.00152614 +/-    0.0000
Ecliptic YDOT         0.00224309 +/-    0.0000
Ecliptic ZDOT        -0.00078705 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   49.63510651 +/-    0.0015
Geocenter to KBO     49.14867015 +/-    0.0023
# Hcoef:  6.63

The following table shows the complete astrometric record for 14YD92. 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 (14YD92) followed by the observatory code and reference code for the source of the astrometry.

2014 12  16.19908  02 38 28.726  -20 07 46.61  23.8r 14YD92    W84  C~55TQ      
2014 12  16.20044  02 38 28.722  -20 07 46.64  23.6i 14YD92    W84  C~55TQ      
2014 12  20.19065  02 38 17.868  -20 06 35.63  23.7r 14YD92    W84  C~55TQ      
2014 12  23.12342  02 38 10.536  -20 05 35.93  22.6i 14YD92    W84  C~55TQ      
2014 12  24.17849  02 38 08.041  -20 05 12.60  23.7g 14YD92    W84  C~55TQ      
2014 12  24.17984  02 38 08.031  -20 05 12.79  23.1r 14YD92    W84  C~55TQ      
2015 01  13.12309  02 37 36.141  -19 55 40.10  24.4g 14YD92    W84  C~55TQ      
2015 11  20.27882  02 45 04.658  -20 02 50.35  23.5r 14YD92    W84  C~55TQ      
2016 11  05.30316  02 51 05.756  -19 52 09.49  22.6i 14YD92    W84  C~55TQ      
2016 11  05.30453  02 51 05.763  -19 52 09.69  23.5r 14YD92    W84  C~55TQ      
2016 11  05.30591  02 51 05.765  -19 52 09.77  24.5g 14YD92    W84  C~55TQ      
2017 10  11.31762  02 57 44.841  -19 32 43.71  23.4i 14YD92    W84  C~55TQ      
2017 12  24.17226  02 53 10.423  -19 41 56.66  23.7i 14YD92    W84  C~55TQ      
2017 12  24.17362  02 53 10.421  -19 41 56.58  23.7r 14YD92    W84  C~55TQ      
2018 11  15.29230  03 00 26.484  -19 36 39.12  23.4i 14YD92    W84  C~55TQ      
2018 11  15.29367  03 00 26.464  -19 36 39.14  23.7r 14YD92    W84  C~55TQ      
2018 11  15.29505  03 00 26.444  -19 36 39.22  24.8g 14YD92    W84  C~55TQ      

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     0.01       0.00    -0.08
     2   0.0000     -0.06    -0.01      -0.01    -0.13
     3   0.0109   -116.09     0.00     122.26    -0.03
     4   0.0190   -190.19    -0.05     215.76     0.00
     5   0.0218   -214.30     0.14     250.37     0.26
     6   0.0219   -214.50    -0.03     250.25     0.09
     7   0.0765   -422.31    -0.08     947.98    -0.01
     8   0.9283   5287.66    -0.01   -1803.85     0.01
     9   1.8894  10246.41    -0.00   -3155.23     0.12
    10   1.8894  10246.42     0.10   -3155.45    -0.12
    11   1.8894  10246.42     0.18   -3155.54    -0.21
    12   2.8203  15915.09    -0.30   -4285.31     0.04
    13   3.0225  12111.85    -0.10   -3271.82    -0.03
    14   3.0225  12111.86    -0.06   -3271.74     0.01
    15   3.9154  17934.40     0.27   -5413.05    -0.03
    16   3.9154  17934.13     0.08   -5412.95     0.04
    17   3.9154  17933.84    -0.13   -5412.91     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.

14YD92    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        76.191    76.306    76.077
ecceobj         0.363     0.364     0.362
incobj         36.230    36.231    36.230
qmin           47.270    47.294    47.262
qmax          104.399   104.716   104.140
amean          75.154    75.266    75.041
amin           74.226    74.386    74.100
amax           76.270    76.436    76.146
emean           0.355     0.356     0.354
emin            0.341     0.343     0.340
emax            0.369     0.370     0.368
imean          34.993    34.991    34.995
imin           34.721    34.713    34.716
imax           35.407    35.399    35.404
excite_mean     0.675     0.675     0.674
fracstop        1.000     1.000     1.000
cjmean          2.820     2.820     2.820

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       286.1     285.9     286.3
kozaiamp         63.4      63.6      63.6