Orbit Fit and Astrometric record for 14YG92

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: 14YG92    
# Created Sat Dec  4 02:13:13 2021
# Orbit generated from Bernstein formalism
# Fitting     12 observations of     12
# Arc:   3.82y
# First observation: 2014/12/22
#  Last observation: 2018/10/18
Preliminary a, adot, b, bdot, g, gdot:
  -0.000021   0.026113  -0.000001  -0.000324   0.025179   0.000000
# Chi-squared of fit:     4.40 DOF:     18 RMS:  0.11
# Min/Max residuals:    -0.17    0.26
# Exact a, adot, b, bdot, g, gdot:
  1.538743E-05  2.599818E-02  4.232730E-07 -3.422543E-04  2.471528E-02  2.599861E-03
# Covariance matrix:
  4.7624E-13 -3.7715E-13 -2.7870E-14  8.6864E-15 -2.0952E-13 -2.6187E-12
 -3.7715E-13  9.5472E-13  7.4449E-15 -6.2132E-14  3.5336E-14  8.5848E-12
 -2.7870E-14  7.4449E-15  2.5311E-13 -9.8291E-14  3.6426E-14  5.5160E-14
  8.6864E-15 -6.2132E-14 -9.8291E-14  8.3206E-14  1.3029E-14 -6.1598E-13
 -2.0952E-13  3.5336E-14  3.6426E-14  1.3029E-14  2.8225E-13  2.0812E-13
 -2.6187E-12  8.5848E-12  5.5160E-14 -6.1598E-13  2.0812E-13  8.4125E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -26.743197    9.746133   -0.967944   -0.076633   -0.152529  2457013.573388
# Heliocentric elements and errors
Epoch:              2457010.5000  =  2014/12/19
Mean Anomaly:           32.55208 +/-     0.041
Argument of Peri:      222.77091 +/-     0.072
Long of Asc Node:      101.55267 +/-     0.001
Inclination:            26.62861 +/-     0.000
Eccentricity:         0.18963295 +/-    0.0003
Semi-Major Axis:     47.58936868 +/-    0.0102
Time of Perihelion: 2446167.7469 +/-      13.0
Perihelion:          38.56485616 +/-    0.0182
Aphelion:            56.61388120 +/-    0.0202
Period (y)              328.3017 +/-      0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.61279974 +/-    0.0008
Ecliptic Y            7.10106221 +/-    0.0001
Ecliptic Z          -18.20710418 +/-    0.0004
Ecliptic XDOT        -0.00025490 +/-    0.0000
Ecliptic YDOT         0.00287387 +/-    0.0000
Ecliptic ZDOT        -0.00016336 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.62259509 +/-    0.0007
Geocenter to KBO     40.46080332 +/-    0.0009
# Hcoef:  7.41

The following table shows the complete astrometric record for 14YG92. 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 (14YG92) followed by the observatory code and reference code for the source of the astrometry.

2014 12  22.07261  01 19 23.421  -20 39 14.89  24.4g 14YG92    W84  C~55TR      
2014 12  23.09313  01 19 22.220  -20 38 38.09  23.3r 14YG92    W84  C~55TR      
2015 01  12.06014  01 19 20.349  -20 24 24.76  24.2r 14YG92    W84  C~55TR      
2015 08  24.38299  01 32 52.882  -19 36 32.27  23.2i 14YG92    W84  C~55TR      
2015 08  24.38435  01 32 52.860  -19 36 32.28  23.5r 14YG92    W84  C~55TR      
2015 08  24.38578  01 32 52.877  -19 36 32.38  24.5g 14YG92    W84  C~55TR      
2015 10  07.23199  01 30 02.335  -20 05 23.45  22.5i 14YG92    W84  C~55TR      
2015 11  07.14852  01 27 32.508  -20 14 28.47  23.7r 14YG92    W84  C~55TR      
2016 11  04.15638  01 33 28.387  -19 36 21.94  23.5r 14YG92    W84  C~55TR      
2017 11  27.06623  01 37 33.231  -18 57 27.30  23.3i 14YG92    W84  C~55TR      
2017 12  08.06381  01 36 57.760  -18 54 25.73  23.4r 14YG92    W84  C~55TR      
2018 10  18.30397  01 46 08.966  -18 14 26.56  23.0r 14YG92    W84  C~55TR      

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     0.26       0.00    -0.13
     2   0.0028      0.11    -0.17      40.48     0.12
     3   0.0575    333.72    -0.14     826.34     0.09
     4   0.6716  11926.28     0.04   -1483.26    -0.09
     5   0.6716  11925.99    -0.17   -1483.13     0.07
     6   0.6716  11926.17     0.08   -1483.33    -0.09
     7   0.7917   8998.78    -0.02   -1993.99     0.07
     8   0.8763   6857.34     0.17   -1573.68    -0.08
     9   1.8702  12383.53    -0.03   -1694.03     0.05
    10   2.9322  16544.67    -0.02   -1125.44    -0.11
    11   2.9623  16171.41    -0.03    -738.51     0.06
    12   3.8227  24332.31     0.03   -2116.38     0.03

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.

14YG92    quality flag:3

Type:           2:1E      2:1E      2:1E

axisobj        48.108    48.140    48.075
ecceobj         0.198     0.199     0.197
incobj         26.635    26.635    26.635
qmin           36.813    36.821    36.882
qmax           59.272    59.234    59.125
amean          47.797    47.797    47.797
amin           47.338    47.362    47.346
amax           48.296    48.307    48.347
emean           0.161     0.160     0.154
emin            0.092     0.092     0.087
emax            0.229     0.228     0.225
imean          25.721    25.733    25.816
imin           24.512    24.522    24.537
imax           26.784    26.775    26.846
excite_mean     0.464     0.464     0.464
fracstop        1.000     1.000     1.000
cjmean          2.869     2.869     2.869

libcent 0        81.7      81.9      82.6
libamp  0        37.2      40.1      42.1
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       176.5     176.0     172.9
kozaiamp        180.0     180.0     180.0