Orbit Fit and Astrometric record for 14YU72

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: 14YU72    
# Created Fri Dec  3 02:13:08 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     28 observations of     28
# Arc:   5.76y
# First observation: 2014/12/17
#  Last observation: 2020/09/21
# Chi-squared of fit:    14.77 DOF:     50 RMS:  0.13
# Min/Max residuals:    -0.23    0.40
# Exact a, adot, b, bdot, g, gdot:
  1.546599E-05  2.266863E-02 -4.490360E-06 -6.039730E-03  2.355293E-02  2.363050E-03
# Covariance matrix:
  2.4442E-13 -1.4166E-13 -3.3976E-14  2.6751E-14 -1.0439E-13 -8.0159E-13
 -1.4166E-13  1.5619E-13  2.6555E-14 -3.6151E-14  2.0902E-14  9.5687E-13
 -3.3976E-14  2.6555E-14  1.3187E-13 -4.6093E-14  3.1747E-14  2.1158E-13
  2.6751E-14 -3.6151E-14 -4.6093E-14  3.1528E-14 -3.9956E-15 -2.5606E-13
 -1.0439E-13  2.0902E-14  3.1747E-14 -3.9956E-15  1.8116E-13  2.9388E-13
 -8.0159E-13  9.5687E-13  2.1158E-13 -2.5606E-13  2.9388E-13  6.9309E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
  -27.008293    9.450235   -0.951167   -0.113360   -0.222845  2457008.643618
# Heliocentric elements and errors
Epoch:              2457008.5000  =  2014/12/17
Mean Anomaly:           49.15697 +/-     0.018
Argument of Peri:      180.72829 +/-     0.027
Long of Asc Node:      130.48124 +/-     0.001
Inclination:            30.20839 +/-     0.000
Eccentricity:         0.14374890 +/-    0.0001
Semi-Major Axis:     46.42190011 +/-    0.0044
Time of Perihelion: 2441233.6455 +/-       6.1
Perihelion:          39.74880315 +/-    0.0067
Aphelion:            53.09499706 +/-    0.0075
Period (y)              316.2952 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.40129068 +/-    0.0007
Ecliptic Y            7.19175361 +/-    0.0001
Ecliptic Z          -19.28104281 +/-    0.0004
Ecliptic XDOT        -0.00050981 +/-    0.0000
Ecliptic YDOT         0.00258198 +/-    0.0000
Ecliptic ZDOT        -0.00075015 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.68875319 +/-    0.0006
Geocenter to KBO     42.45754314 +/-    0.0008
# Hcoef:  7.14

The following table shows the complete astrometric record for 14YU72. 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 (14YU72) followed by the observatory code and reference code for the source of the astrometry.

2014 12  17.14284  01 18 50.468  -21 00 19.87  23.3r 14YU72    W84  C~4yVW      
2014 12  17.14558  01 18 50.454  -21 00 19.95  22.9i 14YU72    W84  C~4yVW      
2014 12  23.09313  01 18 42.877  -20 57 24.16  23.5r 14YU72    W84  C~4yVW      
2014 12  23.09313  01 18 42.87   -20 57 24.2   23.8r 14YU72    W84  C~3cpk      
2014 12  23.12816  01 18 42.833  -20 57 23.04  24.1g 14YU72    W84  C~4yVW      
2015 08  24.38299  01 31 41.119  -20 12 46.52  23.5i 14YU72    W84  C~4yVW      
2015 08  24.38435  01 31 41.107  -20 12 46.69  23.5r 14YU72    W84  C~4yVW      
2015 08  24.38578  01 31 41.104  -20 12 46.68  24.3g 14YU72    W84  C~4yVW      
2015 10  07.23060  01 28 58.825  -20 42 50.46  23.4g 14YU72    W84  C~4yVW      
2015 10  07.23060  01 28 58.83   -20 42 50.5   23.6g 14YU72    W84  C~3cpk      
2015 11  07.25695  01 26 36.099  -20 53 04.15  23.2r 14YU72    W84  C~4yVW      
2015 11  07.25695  01 26 36.10   -20 53 04.2   23.7r 14YU72    W84  C~3cpk      
2016 10  08.14895  01 34 30.437  -20 28 12.66  23.1z 14YU72    W84  C~4yVW      
2016 10  08.15033  01 34 30.452  -20 28 12.91  23.5i 14YU72    W84  C~4yVW      
2016 10  08.15033  01 34 30.45   -20 28 12.9   23.7i 14YU72    W84  C~3cpk      
2016 11  04.15638  01 32 25.543  -20 37 32.91  23.4r 14YU72    W84  C~4yVW      
2016 11  04.15638  01 32 25.54   -20 37 32.9   23.3r 14YU72    W84  C~3cpk      
2016 11  04.15775  01 32 25.535  -20 37 32.69  23.8g 14YU72    W84  C~4yVW      
2016 11  04.15775  01 32 25.53   -20 37 32.7   23.8g 14YU72    W84  C~3cpk      
2016 12  02.05347  01 30 39.461  -20 36 28.53  23.3r 14YU72    W84  C~4yVW      
2016 12  02.05347  01 30 39.46   -20 36 28.5   23.5r 14YU72    W84  C~3cpk      
2017 12  07.06407  01 35 59.752  -20 19 43.79  23.5r 14YU72    W84  C~4yVW      
2017 12  07.06545  01 35 59.738  -20 19 43.95  23.9g 14YU72    W84  C~4yVW      
2017 12  14.13410  01 35 42.387  -20 17 17.78  23.1z 14YU72    W84  C~4yVW      
2018 09  10.28563  01 47 32.789  -19 37 07.08  23.2i 14YU72    W84  C~4yVW      
2018 09  10.28700  01 47 32.776  -19 37 07.31  24.2g 14YU72    W84  C~4yVW      
2020 09  21.433330 01 57 45.970  -19 10 05.44  23.5G 14YU72    G37  C~4A5h      
2020 09  21.470720 01 57 45.812  -19 10 06.95        14YU72    G37  C~4A5h      

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    -0.09       0.00     0.06
     2   0.0000      0.00    -0.23       0.00    -0.10
     3   0.0163      0.00     0.04       0.00     0.02
     4   0.0163      0.00     0.15       0.00     0.06
     5   0.0164      0.00     0.05       0.00     0.06
     6   0.6851      0.00     0.00       0.00     0.06
     7   0.6851      0.00    -0.13       0.00    -0.05
     8   0.6851      0.00    -0.12       0.00     0.03
     9   0.8052      0.00     0.40       0.00    -0.09
    10   0.8052      0.00     0.32       0.00    -0.05
    11   0.8901      0.00    -0.17       0.00     0.13
    12   0.8901      0.00    -0.19       0.00     0.18
    13   1.8097      0.00    -0.12       0.00     0.04
    14   1.8097      0.00     0.18       0.00    -0.16
    15   1.8097      0.00     0.21       0.00    -0.17
    16   1.8837      0.00    -0.05       0.00    -0.08
    17   1.8837      0.00    -0.00       0.00    -0.09
    18   1.8837      0.00    -0.10       0.00     0.13
    19   1.8837      0.00    -0.03       0.00     0.14
    20   1.9601      0.00     0.05       0.00     0.07
    21   1.9601      0.00     0.07       0.00     0.04
    22   2.9731      0.00     0.10       0.00    -0.03
    23   2.9731      0.00    -0.05       0.00    -0.22
    24   2.9924      0.00     0.01       0.00     0.06
    25   3.7321      0.00    -0.01       0.00     0.02
    26   3.7321      0.00    -0.13       0.00    -0.15
    27   5.7640      0.00     0.12       0.00     0.08
    28   5.7641      0.00    -0.09       0.00     0.09

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.

14YU72    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        46.872    46.872    46.872
ecceobj         0.150     0.150     0.150
incobj         30.169    30.169    30.169
qmin           38.529    38.540    38.530
qmax           55.056    54.911    54.940
amean          46.598    46.594    46.593
amin           46.194    46.214    46.203
amax           47.040    47.032    47.029
emean           0.154     0.154     0.154
emin            0.140     0.140     0.140
emax            0.170     0.169     0.169
imean          28.605    28.605    28.605
imin           28.285    28.284    28.284
imax           28.895    28.906    28.906
excite_mean     0.503     0.503     0.503
fracstop        1.000     1.000     1.000
cjmean          2.804     2.804     2.804

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       181.4     181.5     181.6
kozaiamp        180.0     180.0     180.0