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 Fri Mar 29 01:17:34 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     15 observations of     15
# Arc:   8.96y
# First observation: 2014/12/22
#  Last observation: 2023/12/07
# Chi-squared of fit:     7.23 DOF:     24 RMS:  0.12
# Min/Max residuals:    -0.24    0.31
# Exact a, adot, b, bdot, g, gdot:
  1.538829E-05  2.599802E-02  4.103127E-07 -3.422189E-04  2.471527E-02  2.598705E-03
# Covariance matrix:
  4.2396E-13 -1.8253E-13 -3.7104E-14  4.1992E-15 -2.0140E-13 -5.9542E-13
 -1.8253E-13  2.0784E-13  1.3087E-15 -4.8119E-15  1.3192E-14  8.2038E-13
 -3.7104E-14  1.3087E-15  1.7824E-13 -2.5646E-14  5.2444E-14 -9.0374E-15
  4.1992E-15 -4.8119E-15 -2.5646E-14  9.1906E-15 -8.9690E-16 -1.9702E-14
 -2.0140E-13  1.3192E-14  5.2444E-14 -8.9690E-16  2.7809E-13 -2.2002E-14
 -5.9542E-13  8.2038E-13 -9.0374E-15 -1.9702E-14 -2.2002E-14  3.4072E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
  -26.743197    9.746133   -0.967944   -0.076633   -0.152529  2457013.573388
# Heliocentric elements and errors
Epoch:              2457014.5000  =  2014/12/23
Mean Anomaly:           32.56129 +/-     0.011
Argument of Peri:      222.77905 +/-     0.016
Long of Asc Node:      101.55250 +/-     0.000
Inclination:            26.62861 +/-     0.000
Eccentricity:         0.18958746 +/-    0.0001
Semi-Major Axis:     47.58803076 +/-    0.0059
Time of Perihelion: 2446169.1356 +/-       4.3
Perihelion:          38.56593679 +/-    0.0068
Aphelion:            56.61012473 +/-    0.0085
Period (y)              328.2878 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.61280573 +/-    0.0008
Ecliptic Y            7.10106327 +/-    0.0001
Ecliptic Z          -18.20710783 +/-    0.0004
Ecliptic XDOT        -0.00025501 +/-    0.0000
Ecliptic YDOT         0.00287384 +/-    0.0000
Ecliptic ZDOT        -0.00016330 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.62252019 +/-    0.0007
Geocenter to KBO     40.46079491 +/-    0.0009
# Hcoef:  7.40

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      
2023 12  07.098350 02 09 23.653  -15 00 47.42  23.4G 14YG92    G37  C~7dJH      
2023 12  07.148950 02 09 23.443  -15 00 46.78        14YG92    G37  C~7dJH      
2023 12  07.200770 02 09 23.275  -15 00 46.25        14YG92    G37  C~7dJH      

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     0.31       0.00    -0.01
     2   0.0028      0.00    -0.22       0.00     0.04
     3   0.0575      0.00    -0.18       0.00     0.03
     4   0.6716      0.00     0.09       0.00    -0.05
     5   0.6716      0.00    -0.19       0.00    -0.00
     6   0.6716      0.00     0.12       0.00    -0.04
     7   0.7917      0.00    -0.04       0.00     0.06
     8   0.8763      0.00     0.22       0.00     0.01
     9   1.8702      0.00    -0.04       0.00     0.04
    10   2.9322      0.00     0.05       0.00    -0.10
    11   2.9623      0.00    -0.04       0.00     0.04
    12   3.8227      0.00    -0.01       0.00     0.03
    13   8.9583      0.00     0.22       0.00     0.07
    14   8.9585      0.00    -0.24       0.00     0.04
    15   8.9586      0.00    -0.01       0.00    -0.12

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        48.107    48.107    48.107
ecceobj         0.198     0.198     0.198
incobj         26.635    26.635    26.635
qmin           36.825    36.824    36.827
qmax           59.248    59.244    59.250
amean          47.797    47.797    47.797
amin           47.353    47.348    47.360
amax           48.297    48.294    48.301
emean           0.161     0.161     0.161
emin            0.092     0.092     0.092
emax            0.229     0.229     0.229
imean          25.721    25.721    25.721
imin           24.506    24.505    24.508
imax           26.783    26.783    26.782
excite_mean     0.464     0.464     0.464
fracstop        1.000     1.000     1.000
cjmean          2.869     2.869     2.869

libcent 0        81.8      81.8      81.7
libamp  0        37.2      37.2      37.2
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       176.4     176.5     176.5
kozaiamp        180.0     180.0     180.0