Orbit Fit and Astrometric record for 14YR72

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: 14YR72    
# Created Fri Dec  3 02:13:08 2021
# Orbit generated from Bernstein formalism
# Fitting     32 observations of     32
# Arc:   3.78y
# First observation: 2014/12/20
#  Last observation: 2018/10/01
Preliminary a, adot, b, bdot, g, gdot:
  -0.000101   0.020190   0.000057   0.001238   0.023527   0.000000
# Chi-squared of fit:     8.89 DOF:     58 RMS:  0.09
# Min/Max residuals:    -0.26    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.452018E-05  2.006879E-02  5.201748E-07  1.198894E-03  2.271620E-02  1.102429E-03
# Covariance matrix:
  2.1397E-13 -1.6867E-13 -1.0780E-14 -2.3134E-15 -1.0038E-13 -1.4516E-12
 -1.6867E-13  2.3119E-13  4.3949E-15 -2.0487E-15  5.5079E-14  2.2147E-12
 -1.0780E-14  4.3949E-15  1.3315E-13 -5.1597E-14  3.3545E-14  1.2365E-13
 -2.3134E-15 -2.0487E-15 -5.1597E-14  3.4429E-14  1.3249E-14  8.8261E-15
 -1.0038E-13  5.5079E-14  3.3545E-14  1.3249E-14  2.8376E-13  1.2352E-12
 -1.4516E-12  2.2147E-12  1.2365E-13  8.8261E-15  1.2352E-12  2.6256E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -26.596093    6.329616   -0.972106   -0.065483   -0.131241  2457011.615388
# Heliocentric elements and errors
Epoch:              2457010.5000  =  2014/12/19
Mean Anomaly:          144.83736 +/-     0.082
Argument of Peri:      124.82093 +/-     0.079
Long of Asc Node:       88.81590 +/-     0.001
Inclination:            26.78535 +/-     0.000
Eccentricity:         0.14538151 +/-    0.0001
Semi-Major Axis:     39.26230241 +/-    0.0032
Time of Perihelion: 2420857.8471 +/-      19.9
Perihelion:          33.55428972 +/-    0.0053
Aphelion:            44.97031510 +/-    0.0058
Period (y)              246.0208 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           39.15911197 +/-    0.0009
Ecliptic Y            5.32363400 +/-    0.0001
Ecliptic Z          -19.70836953 +/-    0.0005
Ecliptic XDOT        -0.00008833 +/-    0.0000
Ecliptic YDOT         0.00241910 +/-    0.0000
Ecliptic ZDOT         0.00006982 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.16103440 +/-    0.0008
Geocenter to KBO     44.02145684 +/-    0.0010
# Hcoef:  6.77

The following table shows the complete astrometric record for 14YR72. 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 (14YR72) followed by the observatory code and reference code for the source of the astrometry.

2014 12  20.11461  01 07 14.933  -21 48 38.53  24.4g 14YR72    W84  C~4yVV      
2014 12  20.11752  01 07 14.942  -21 48 38.42  23.2r 14YR72    W84  C~4yVV      
2014 12  20.11752  01 07 14.94   -21 48 38.4   23.3r 14YR72    W84  C~3cpj      
2014 12  22.06982  01 07 12.872  -21 47 32.20  23.0r 14YR72    W84  C~4yVW      
2014 12  22.06982  01 07 12.87   -21 47 32.2   23.1r 14YR72    W84  C~3cpj      
2014 12  25.07215  01 07 10.347  -21 45 45.39  22.7z 14YR72    W84  C~4yVW      
2015 10  08.20997  01 15 58.085  -21 19 59.78  23.1r 14YR72    W84  C~4yVW      
2015 10  08.20997  01 15 58.08   -21 19 59.8   23.4r 14YR72    W84  C~3cpk      
2015 11  06.10918  01 13 45.049  -21 26 51.23  22.9i 14YR72    W84  C~4yVW      
2015 11  06.10918  01 13 45.05   -21 26 51.2   23.0i 14YR72    W84  C~3cpk      
2015 11  06.11056  01 13 45.043  -21 26 51.27  23.2r 14YR72    W84  C~4yVW      
2015 11  06.11056  01 13 45.04   -21 26 51.3   23.2r 14YR72    W84  C~3cpk      
2015 11  06.11194  01 13 45.018  -21 26 51.15  24.1g 14YR72    W84  C~4yVW      
2015 11  16.15178  01 13 04.360  -21 26 37.17  22.9i 14YR72    W84  C~4yVW      
2016 08  26.38295  01 23 04.49   -20 20 53.4   23.5r 14YR72    W84  C~3cpk      
2016 10  05.27534  01 20 28.104  -20 44 32.77  22.7i 14YR72    W84  C~4yVW      
2016 10  05.27534  01 20 28.10   -20 44 32.8   22.8i 14YR72    W84  C~3cpk      
2016 10  05.27673  01 20 28.101  -20 44 32.73  22.9r 14YR72    W84  C~4yVW      
2016 10  05.27673  01 20 28.10   -20 44 32.7   23.0r 14YR72    W84  C~3cpk      
2016 10  05.27813  01 20 28.080  -20 44 32.58  24.3g 14YR72    W84  C~4yVW      
2016 12  01.07156  01 16 30.684  -20 49 38.44  23.3r 14YR72    W84  C~4yVW      
2016 12  01.07156  01 16 30.68   -20 49 38.4   23.4r 14YR72    W84  C~3cpk      
2016 12  01.07293  01 16 30.683  -20 49 38.30  23.1i 14YR72    W84  C~4yVW      
2016 12  21.11576  01 15 49.172  -20 41 09.59  23.4r 14YR72    W84  C~4yVW      
2016 12  21.11576  01 15 49.17   -20 41 09.6   23.6r 14YR72    W84  C~3cpk      
2016 12  21.11714  01 15 49.172  -20 41 09.64  22.8i 14YR72    W84  C~4yVW      
2017 12  08.05814  01 20 28.276  -20 13 18.89  23.2i 14YR72    W84  C~4yVW      
2017 12  08.05950  01 20 28.273  -20 13 18.93  23.4r 14YR72    W84  C~4yVW      
2018 09  14.37686  01 30 30.550  -19 22 50.89  22.8i 14YR72    W84  C~4yVW      
2018 09  14.37824  01 30 30.552  -19 22 51.06  23.4r 14YR72    W84  C~4yVW      
2018 09  14.37961  01 30 30.528  -19 22 51.19  24.0g 14YR72    W84  C~4yVW      
2018 10  01.33038  01 29 19.763  -19 32 23.30  21.7z 14YR72    W84  C~4yVW      

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    -0.11       0.00     0.06
     2   0.0000      0.16     0.05       0.05     0.00
     3   0.0000      0.14     0.03       0.08     0.03
     4   0.0054      2.25     0.05      72.25    -0.09
     5   0.0054      2.27     0.08      72.24    -0.10
     6   0.0136     15.92    -0.05     183.86    -0.00
     7   0.7997   7326.86     0.03   -1604.62    -0.07
     8   0.7997   7326.79    -0.05   -1604.60    -0.05
     9   0.8788   5473.86     0.05   -1162.55     0.03
    10   0.8788   5473.84     0.03   -1162.57     0.01
    11   0.8788   5473.69    -0.04   -1162.58    -0.03
    12   0.8788   5473.74     0.01   -1162.57    -0.02
    13   0.8788   5473.48    -0.17   -1162.31     0.20
    14   0.9063   4968.03     0.01    -902.80    -0.05
    15   1.6845  14276.77    -0.03   -1076.46     0.05
    16   1.7937  11667.20    -0.06   -1365.99    -0.14
    17   1.7937  11667.27     0.01   -1365.99    -0.13
    18   1.7937  11667.25     0.09   -1365.90    -0.05
    19   1.7937  11667.25     0.09   -1365.93    -0.09
    20   1.7937  11667.05    -0.01   -1365.67     0.17
    21   1.9492   8537.66     0.03    -167.09     0.14
    22   1.9492   8537.69     0.06    -167.16     0.08
    23   1.9492   8537.74     0.15    -167.02     0.16
    24   2.0041   8237.07    -0.09     546.10     0.03
    25   2.0041   8237.10    -0.06     546.10     0.03
    26   2.0041   8237.08    -0.07     546.05    -0.07
    27   2.9677  12505.27    -0.01     314.28     0.01
    28   2.9677  12505.21    -0.04     314.27    -0.05
    29   3.7351  21519.19    -0.03    -823.51     0.01
    30   3.7352  21519.14     0.01    -823.68    -0.15
    31   3.7352  21518.77    -0.26    -823.64    -0.10
    32   3.7816  20355.23     0.28    -874.97     0.16

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.

14YR72    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.556    39.566    39.546
ecceobj         0.139     0.139     0.139
incobj         26.795    26.795    26.795
qmin           31.353    31.352    31.324
qmax           47.901    47.918    47.924
amean          39.455    39.455    39.455
amin           39.104    39.117    39.100
amax           39.838    39.833    39.862
emean           0.164     0.164     0.164
emin            0.119     0.117     0.118
emax            0.204     0.205     0.205
imean          24.897    24.896    24.904
imin           23.993    23.962    24.021
imax           25.763    25.784    25.745
excite_mean     0.453     0.452     0.453
fracstop        1.000     1.000     1.000
cjmean          2.811     2.811     2.811

libcent 0       179.3     180.3     180.0
libamp  0        53.4      48.2      59.3
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       180.2     180.4     179.5
kozaiamp        180.0     180.0     180.0