Orbit Fit and Astrometric record for 14YL50

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: 14YL50    
# Created Fri Mar 29 01:17:32 2024
# Orbit generated from Bernstein formalism
# Fitting     46 observations of     46
# Arc:   3.92y
# First observation: 2014/12/16
#  Last observation: 2018/11/15
Preliminary a, adot, b, bdot, g, gdot:
   0.000061   0.030129  -0.000025  -0.003149   0.027599   0.000000
# Chi-squared of fit:    26.40 DOF:     86 RMS:  0.13
# Min/Max residuals:    -0.40    0.40
# Exact a, adot, b, bdot, g, gdot:
  2.013405E-05  3.032818E-02 -1.861674E-06 -3.201096E-03  2.637399E-02  2.707059E-03
# Covariance matrix:
  7.4188E-14 -7.4680E-14 -1.6104E-15  6.2348E-15 -4.2296E-16 -4.4704E-13
 -7.4680E-14  1.9841E-13  6.0610E-15 -2.3077E-14 -1.7550E-14  1.5691E-12
 -1.6104E-15  6.0610E-15  6.0889E-14 -2.7050E-14 -8.6978E-15  3.9395E-14
  6.2348E-15 -2.3077E-14 -2.7050E-14  2.7311E-14  2.2461E-14 -1.6974E-13
 -4.2296E-16 -1.7550E-14 -8.6978E-15  2.2461E-14  5.5013E-13  8.5842E-13
 -4.4704E-13  1.5691E-12  3.9395E-14 -1.6974E-13  8.5842E-13  1.5961E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -29.063882   24.844655   -0.842250   -0.246617   -0.444156  2457007.684690
# Heliocentric elements and errors
Epoch:              2457000.5000  =  2014/12/09
Mean Anomaly:           12.59085 +/-     0.013
Argument of Peri:      234.50821 +/-     0.028
Long of Asc Node:      127.49272 +/-     0.001
Inclination:            29.15653 +/-     0.000
Eccentricity:         0.32395224 +/-    0.0001
Semi-Major Axis:     55.38316951 +/-    0.0111
Time of Perihelion: 2451735.2669 +/-       5.3
Perihelion:          37.44166791 +/-    0.0104
Aphelion:            73.32467111 +/-    0.0164
Period (y)              412.1686 +/-      0.12
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.17843969 +/-    0.0008
Ecliptic Y           14.90416418 +/-    0.0004
Ecliptic Z          -18.41920181 +/-    0.0005
Ecliptic XDOT        -0.00125047 +/-    0.0000
Ecliptic YDOT         0.00288719 +/-    0.0000
Ecliptic ZDOT        -0.00042687 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.36846788 +/-    0.0007
Geocenter to KBO     37.91614296 +/-    0.0011
# Hcoef:  6.87

The following table shows the complete astrometric record for 14YL50. 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 (14YL50) followed by the observatory code and reference code for the source of the astrometry.

2014 12  16.183912 02 15 02.32   -17 26 03.9   22.9r 14YL50    W84  C~1yHA      
2014 12  16.18392  02 15 02.345  -17 26 03.83  22.6r 14YL50    W84  C~4yVV      
2014 12  16.18392  02 15 02.34   -17 26 03.8   22.6r 14YL50    W84  C~3cpg      
2014 12  16.185266 02 15 02.34   -17 26 03.5   22.9i 14YL50    W84  C~1yHA      
2014 12  16.18527  02 15 02.346  -17 26 03.71  22.3i 14YL50    W84  C~4yVV      
2014 12  16.18527  02 15 02.34   -17 26 03.7   22.7i 14YL50    W84  C~3cpg      
2014 12  20.168692 02 14 50.95   -17 24 23.9   23.6g 14YL50    W84  C~1yHA      
2014 12  20.16870  02 14 50.959  -17 24 23.91  23.4g 14YL50    W84  C~4yVV      
2014 12  20.16870  02 14 50.96   -17 24 23.9   23.5g 14YL50    W84  C~3cpg      
2014 12  20.170069 02 14 50.93   -17 24 23.8   22.8i 14YL50    W84  C~1yHA      
2014 12  20.17007  02 14 50.948  -17 24 23.88  22.5i 14YL50    W84  C~4yVV      
2014 12  20.17007  02 14 50.95   -17 24 23.9   22.6i 14YL50    W84  C~3cpg      
2014 12  24.16197  02 14 40.937  -17 22 29.97  23.0r 14YL50    W84  C~4yVV      
2014 12  24.16197  02 14 40.94   -17 22 30.0   23.0r 14YL50    W84  C~3cpg      
2014 12  24.163310 02 14 40.94   -17 22 29.9   23.4g 14YL50    W84  C~1yHA      
2014 12  24.16332  02 14 40.946  -17 22 29.84  23.5g 14YL50    W84  C~4yVV      
2014 12  24.16332  02 14 40.95   -17 22 29.9   23.3g 14YL50    W84  C~3cpg      
2014 12  29.141528 02 14 30.52   -17 19 48.5   22.1z 14YL50    W84  C~352S      
2014 12  29.142049 02 14 30.52   -17 19 48.6   23.1z 14YL50    W84  C~1yHA      
2015 11  21.113588 02 23 43.95   -17 00 50.8   22.1z 14YL50    W84  C~1yHA      
2015 11  21.11360  02 23 43.954  -17 00 50.92  22.2z 14YL50    W84  C~4yVV      
2015 11  21.11360  02 23 43.95   -17 00 50.9   22.0z 14YL50    W84  C~3cpg      
2015 12  14.185567 02 22 08.95   -16 57 21.5   22.4i 14YL50    W84  C~1yHA      
2015 12  14.18557  02 22 08.983  -16 57 21.92  22.1i 14YL50    W84  C~4yVV      
2015 12  14.18557  02 22 08.98   -16 57 21.9   22.2i 14YL50    W84  C~3cpg      
2015 12  14.186944 02 22 08.95   -16 57 21.5   22.8r 14YL50    W84  C~1yHA      
2015 12  14.18695  02 22 08.971  -16 57 21.90  22.5r 14YL50    W84  C~4yVV      
2015 12  14.18695  02 22 08.97   -16 57 21.9   22.6r 14YL50    W84  C~3cpg      
2015 12  14.188287 02 22 08.93   -16 57 21.7   23.4g 14YL50    W84  C~1yHA      
2015 12  14.18831  02 22 08.959  -16 57 21.94  23.1g 14YL50    W84  C~4yVV      
2015 12  14.18831  02 22 08.96   -16 57 21.9   23.2g 14YL50    W84  C~3cpg      
2016 11  03.30268  02 32 05.995  -16 27 03.09  22.8r 14YL50    W84  C~4yVV      
2016 11  03.30268  02 32 05.99   -16 27 03.1   22.9r 14YL50    W84  C~3cpg      
2016 11  03.30406  02 32 05.991  -16 27 03.10  23.3g 14YL50    W84  C~4yVV      
2016 11  03.30406  02 32 05.99   -16 27 03.1   23.4g 14YL50    W84  C~3cpg      
2016 11  28.18779  02 30 04.446  -16 30 08.61  22.6i 14YL50    W84  C~4yVV      
2016 11  28.18779  02 30 04.45   -16 30 08.6   22.7i 14YL50    W84  C~3cpg      
2016 12  30.08378  02 28 16.873  -16 19 49.36  22.5z 14YL50    W84  C~4yVV      
2017 10  03.25087  02 41 26.956  -15 39 13.14  22.4z 14YL50    W84  C~4yVV      
2017 10  19.27384  02 40 14.475  -15 48 58.78  22.9g 14YL50    W84  C~4yVV      
2017 10  19.27520  02 40 14.471  -15 48 59.09  22.4i 14YL50    W84  C~4yVV      
2017 10  19.27657  02 40 14.454  -15 48 59.04  22.9r 14YL50    W84  C~4yVV      
2017 12  10.17808  02 36 05.916  -15 57 14.43  23.7g 14YL50    W84  C~4yVV      
2018 01  17.09465  02 34 39.828  -15 37 44.28  23.7g 14YL50    W84  C~4yVV      
2018 10  18.29380  02 47 06.221  -15 16 06.30  22.8r 14YL50    W84  C~4yVV      
2018 11  15.28679  02 44 45.978  -15 26 23.65  22.4g 14YL50    W84  C~4yVV      

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    -0.40       0.00    -0.01
     2   0.0000      0.30    -0.10      -0.02    -0.03
     3   0.0000      0.36    -0.04      -0.07    -0.08
     4   0.0000      0.42     0.06       0.26     0.20
     5   0.0000      0.34    -0.02       0.08     0.01
     6   0.0000      0.42     0.06       0.04    -0.03
     7   0.0109   -112.82     0.06     154.12     0.03
     8   0.0109   -112.68     0.19     154.07    -0.02
     9   0.0109   -112.70     0.18     154.06    -0.03
    10   0.0109   -113.04    -0.13     154.32     0.18
    11   0.0109   -112.82     0.10     154.12    -0.03
    12   0.0109   -112.83     0.08     154.15     0.00
    13   0.0218   -202.41     0.01     313.73    -0.15
    14   0.0218   -202.44    -0.01     313.78    -0.10
    15   0.0218   -202.38     0.08     313.83    -0.11
    16   0.0218   -202.24     0.21     313.77    -0.17
    17   0.0218   -202.27     0.18     313.85    -0.09
    18   0.0355   -279.53    -0.18     519.63     0.36
    19   0.0355   -279.57    -0.22     519.54     0.24
    20   0.9307   7485.66    -0.02   -1469.83    -0.02
    21   0.9307   7485.62    -0.05   -1469.93    -0.11
    22   0.9307   7485.66    -0.01   -1469.97    -0.15
    23   0.9938   6309.21    -0.10    -747.91     0.40
    24   0.9938   6309.45     0.14    -748.45    -0.14
    25   0.9938   6309.48     0.17    -748.48    -0.18
    26   0.9938   6309.21    -0.05    -747.91     0.34
    27   0.9938   6309.32     0.06    -748.39    -0.14
    28   0.9938   6309.33     0.07    -748.40    -0.14
    29   0.9939   6308.87    -0.34    -747.98     0.22
    30   0.9939   6309.19    -0.02    -748.34    -0.13
    31   0.9939   6309.16    -0.05    -748.37    -0.16
    32   1.8840  14936.70    -0.05   -2447.60    -0.00
    33   1.8840  14936.77     0.02   -2447.62    -0.02
    34   1.8840  14936.70     0.06   -2447.60    -0.02
    35   1.8840  14936.72     0.07   -2447.61    -0.03
    36   1.9521  13250.47     0.02   -1921.60    -0.02
    37   1.9521  13250.41    -0.04   -1921.59    -0.01
    38   2.0394  12068.26     0.12    -738.91     0.13
    39   2.7983  23570.46    -0.04   -3092.78     0.03
    40   2.8421  22361.26     0.07   -3200.27     0.12
    41   2.8421  22361.08    -0.00   -3200.53    -0.14
    42   2.8421  22360.87    -0.10   -3200.39     0.01
    43   2.9842  18846.01    -0.08   -2193.72    -0.07
    44   3.0881  18172.31     0.01    -616.37     0.01
    45   3.8388  28694.05    -0.11   -3859.19    -0.05
    46   3.9154  26553.31     0.15   -3577.75     0.11

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.

14YL50    quality flag:1

Type:         5:2EEE  SCATNEAR    5:2EEE
Type:         5:2EII                    

axisobj        56.141    56.177    56.105
ecceobj         0.333     0.334     0.333
incobj         29.140    29.140    29.140
qmin           37.011    37.018    35.354
qmax           74.856    74.926    76.438
amean          55.461    55.459    55.461
amin           54.846    54.803    54.810
amax           56.202    56.226    56.201
emean           0.242     0.243     0.286
emin            0.195     0.172     0.227
emax            0.333     0.334     0.361
imean          30.209    30.145    28.889
imin           27.587    27.592    26.322
imax           31.308    31.679    30.619
excite_mean     0.559     0.560     0.563
fracstop        1.000     1.000     1.000
cjmean          2.818     2.817     2.818

libcent 0       180.9    -180.0     179.9
libamp  0       100.0    -180.0      84.9
libcent 1       196.6    -180.0    -180.0
libamp  1       158.7    -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       184.2     266.4     164.1
kozaiamp         46.4      52.6      69.6