Orbit Fit and Astrometric record for 14YA92

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: 14YA92    
# Created Fri Mar 29 01:17:33 2024
# Orbit generated from Bernstein formalism
# Fitting     13 observations of     13
# Arc:   2.99y
# First observation: 2014/12/16
#  Last observation: 2017/12/14
Preliminary a, adot, b, bdot, g, gdot:
   0.000011   0.024287  -0.000097   0.009203   0.026305   0.000000
# Chi-squared of fit:     5.08 DOF:     20 RMS:  0.11
# Min/Max residuals:    -0.34    0.17
# Exact a, adot, b, bdot, g, gdot:
  1.464311E-05  2.410435E-02  5.065132E-06  9.072427E-03  2.585089E-02 -1.196041E-03
# Covariance matrix:
  3.7525E-13 -3.8599E-13  3.6354E-14 -8.7571E-14 -9.7326E-14 -3.3672E-12
 -3.8599E-13  1.4829E-12 -1.6357E-13  4.4006E-13  1.7215E-13  1.8101E-11
  3.6354E-14 -1.6357E-13  3.4575E-13 -1.9920E-13 -6.7256E-14 -2.2496E-12
 -8.7571E-14  4.4006E-13 -1.9920E-13  2.4278E-13  1.1629E-13  5.8908E-12
 -9.7326E-14  1.7215E-13 -6.7256E-14  1.1629E-13  4.4385E-13  3.2998E-12
 -3.3672E-12  1.8101E-11 -2.2496E-12  5.8908E-12  3.2998E-12  2.3860E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
  -27.973644   27.859864   -0.814319   -0.258602   -0.487330  2457007.680348
# Heliocentric elements and errors
Epoch:              2457000.5000  =  2014/12/09
Mean Anomaly:          241.93788 +/-     0.521
Argument of Peri:       65.77200 +/-     0.519
Long of Asc Node:       79.23716 +/-     0.001
Inclination:            34.28867 +/-     0.000
Eccentricity:         0.03055388 +/-    0.0005
Semi-Major Axis:     38.59655401 +/-    0.0040
Time of Perihelion: 2485723.4683 +/-     126.8
Perihelion:          37.41727945 +/-    0.0209
Aphelion:            39.77582856 +/-    0.0209
Period (y)              239.7900 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.30819661 +/-    0.0008
Ecliptic Y           16.94431544 +/-    0.0004
Ecliptic Z          -18.14493336 +/-    0.0005
Ecliptic XDOT        -0.00089750 +/-    0.0000
Ecliptic YDOT         0.00241018 +/-    0.0000
Ecliptic ZDOT         0.00090811 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.17824925 +/-    0.0007
Geocenter to KBO     38.68339454 +/-    0.0010
# Hcoef:  7.87

The following table shows the complete astrometric record for 14YA92. 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 (14YA92) followed by the observatory code and reference code for the source of the astrometry.

2014 12  16.17957  02 23 36.404  -15 26 16.01  23.9r 14YA92    W84  C~55TQ      
2014 12  20.17285  02 23 23.075  -15 24 30.25  23.9r 14YA92    W84  C~55TQ      
2015 01  14.09508  02 22 32.581  -15 08 44.73  23.8r 14YA92    W84  C~55TQ      
2015 01  28.05640  02 22 31.510  -14 57 00.41  23.6z 14YA92    W84  C~55TQ      
2015 12  14.18137  02 28 16.182  -14 27 43.65  23.9g 14YA92    W84  C~55TQ      
2016 09  23.32842  02 39 17.727  -13 10 10.09  23.4r 14YA92    W84  C~55TQ      
2016 09  25.25649  02 39 10.267  -13 11 22.23  24.7g 14YA92    W84  C~55TQ      
2016 10  06.22167  02 38 23.21   -13 17 47.5         14YA92    W84  C~5iqY      
2016 10  06.35279  02 38 22.59   -13 17 51.7   24.3V 14YA92    W84  C~5iqY      
2016 11  27.11581  02 33 56.746  -13 31 19.91  23.6r 14YA92    W84  C~55TQ      
2017 10  30.30422  02 40 51.671  -12 27 08.21  24.4g 14YA92    W84  C~55TQ      
2017 12  14.08963  02 37 11.608  -12 27 24.93  23.8r 14YA92    W84  C~55TQ      
2017 12  14.09100  02 37 11.614  -12 27 25.34  24.2g 14YA92    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     0.02       0.00     0.10
     2   0.0109   -140.89    -0.01     168.77     0.07
     3   0.0792   -477.07    -0.16    1315.45    -0.13
     4   0.1174   -235.36     0.13    1977.22    -0.14
     5   0.9938   5062.40     0.05    1777.98     0.09
     6   1.7718  15770.63    -0.03    2479.86     0.10
     7   1.7771  15641.66     0.07    2454.47    -0.06
     8   1.8071  14855.34     0.03    2358.63    -0.05
     9   1.8075  14845.32     0.00    2358.18     0.07
    10   1.9492  10932.92    -0.13    3074.04    -0.03
    11   2.8723  18041.75     0.06    4351.52     0.17
    12   2.9950  15034.82    -0.01    5562.28     0.13
    13   2.9950  15034.75    -0.02    5561.87    -0.34

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.

14YA92    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        38.903    38.916    38.890
ecceobj         0.024     0.024     0.025
incobj         34.284    34.284    34.284
qmin           37.073    37.155    37.064
qmax           40.424    40.346    40.389
amean          38.671    38.686    38.653
amin           38.391    38.411    38.370
amax           38.965    38.970    38.945
emean           0.027     0.026     0.026
emin            0.018     0.017     0.014
emax            0.038     0.036     0.037
imean          32.760    32.761    32.762
imin           32.418    32.418    32.413
imax           33.136    33.138    33.139
excite_mean     0.542     0.542     0.542
fracstop        1.000     1.000     1.000
cjmean          2.684     2.685     2.684

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       177.0     173.7     180.5
kozaiamp        180.0     179.9     180.0