Orbit Fit and Astrometric record for 14UL225

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: 14UL225   
# Created Tue Dec 12 02:38:09 2017
# Orbit generated from Bernstein formalism
# Fitting   48 observations of   49
# Arc:   3.42y
# First observation: 2013/09/01
#  Last observation: 2017/01/31
Preliminary a, adot, b, bdot, g, gdot:
  -0.000044   0.029428  -0.000006  -0.003814   0.026796   0.000000
# Chi-squared of fit:    10.73 DOF:   90 RMS:  0.08
# Min/Max residuals:    -0.38    0.39
# Exact a, adot, b, bdot, g, gdot:
  1.734065E-05  2.931802E-02 -2.020287E-06 -3.817865E-03  2.678249E-02 -2.074314E-03
# Covariance matrix:
  1.5676E-13 -1.4907E-13 -7.2587E-15  1.5634E-14  2.7209E-14 -1.4956E-12
 -1.4907E-13  3.1441E-13  2.2125E-14 -4.8111E-14  6.7682E-14  4.6534E-12
 -7.2587E-15  2.2125E-14  1.0319E-13 -7.1878E-14  5.9196E-15  4.1213E-13
  1.5634E-14 -4.8111E-14 -7.1878E-14  7.3880E-14 -1.3128E-14 -8.9630E-13
  2.7209E-14  6.7682E-14  5.9196E-15 -1.3128E-14  1.0218E-13  1.2978E-12
 -1.4956E-12  4.6534E-12  4.1213E-13 -8.9630E-13  1.2978E-12  8.6703E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.038164   24.331307    0.719389    0.037649   -0.708321  2456537.030358
# Heliocentric elements and errors
Epoch:              2456530.5000  =  2013/08/26
Mean Anomaly:          339.03213 +/-     0.058
Argument of Peri:      189.60183 +/-     0.094
Long of Asc Node:      225.16394 +/-     0.001
Inclination:             7.94338 +/-     0.000
Eccentricity:         0.20252802 +/-    0.0002
Semi-Major Axis:     46.51848761 +/-    0.0035
Time of Perihelion: 2463280.2640 +/-      18.7
Perihelion:          37.09719035 +/-    0.0083
Aphelion:            55.93978488 +/-    0.0089
Period (y)              317.2828 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.91581258 +/-    0.0004
Ecliptic Y           15.00185129 +/-    0.0002
Ecliptic Z            1.97889325 +/-    0.0000
Ecliptic XDOT        -0.00141510 +/-    0.0000
Ecliptic YDOT         0.00265104 +/-    0.0000
Ecliptic ZDOT        -0.00040083 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.05371898 +/-    0.0004
Geocenter to KBO     37.33782889 +/-    0.0004
# Hcoef:  7.54

The following table shows the complete astrometric record for 14UL225. 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 (14UL225) followed by the observatory code and reference code for the source of the astrometry.

2013 09  01.52958  01 25 33.576  +12 15 22.93  23.4r 14UL225   568  C~2Gdr      
2013 09  01.56842  01 25 33.451  +12 15 22.15  23.2r 14UL225   568  C~2Gdr      
2013 10  30.38058  01 21 08.481  +11 48 25.52  23.0r 14UL225   568  C~2Gdr      
2013 10  31.37152  01 21 03.791  +11 47 54.15  23.4r 14UL225   568  C~2Gdr      
2013 10  31.37622  01 21 03.756  +11 47 53.96  23.4r 14UL225   568  C~2Gdr      
2013 11  01.31737  01 20 59.341  +11 47 24.23  23.3r 14UL225   568  C~2Gdr      
2013 11  01.35659  01 20 59.152  +11 47 22.90  23.2r 14UL225   568  C~2Gdr      
2013 11  01.44974  01 20 58.700  +11 47 19.99  23.0r 14UL225   568  C~2Gdr      
2013 11  27.37157  01 19 13.258  +11 34 45.26  23.3r 14UL225   568  C~2Gdr      
2013 12  04.35483  01 18 52.374  +11 31 57.75  23.3r 14UL225   568  C~2Gdr      
2013 12  29.30703  01 18 13.607  +11 25 12.80  23.2r 14UL225   568  C~2Gdr      
2013 12  29.31790  01 18 13.602  +11 25 12.77  23.3r 14UL225   568  C~2Gdr      
2014 07  25.51682  01 33 14.455  +12 44 26.35  23.2r 14UL225   568  C~2Gdr      
2014 07  25.55817  01 33 14.462  +12 44 26.57  23.3r 14UL225   568  C~2Gdr      
2014 07  25.59996  01 33 14.476  +12 44 26.81  23.2r 14UL225   568  C~2Gdr      
2014 08  23.55641  01 32 43.665  +12 42 33.55  23.3r 14UL225   568  C~2Gdr      
2014 08  23.60330  01 32 43.548  +12 42 32.97  23.1r 14UL225   568  C~2Gdr      
2014 08  25.53767  01 32 38.774  +12 42 08.72  24.7u 14UL225   568  C~2Gdr      
2014 08  25.54193  01 32 38.757  +12 42 08.53  25.1u 14UL225   568  C~2Gdr      
2014 08  25.54619  01 32 38.748  +12 42 08.55  24.7u 14UL225   568  C~2Gdr      
2014 08  25.55046  01 32 38.744  +12 42 08.57  24.5u 14UL225   568  C~2Gdr      
2014 08  25.55472  01 32 38.716  +12 42 08.33  25.0u 14UL225   568  C~2Gdr      
2014 08  25.55898  01 32 38.707  +12 42 08.26  24.5u 14UL225   568  C~2Gdr      
2014 08  27.44876  01 32 33.738  +12 41 42.73  23.4r 14UL225   568  C~2Gdr      
2014 08  27.54519  01 32 33.470  +12 41 41.42  23.1r 14UL225   568  C~2Gdr      
2014 09  18.37931  01 31 16.838  +12 34 38.29  23.1r 14UL225   568  C~2Gdr      
2014 09  18.42403  01 31 16.647  +12 34 37.32  23.2r 14UL225   568  C~2Gdr      
2014 09  23.46480  01 30 54.814  +12 32 30.87  23.2r 14UL225   568  C~2Gdr      
2014 09  27.42812  01 30 36.81   +12 30 45.5   22.8R 14UL225   695  C~2Gdr      
2014 09  27.48193  01 30 36.54   +12 30 44.4         14UL225   695  C~2Gdr      
2014 10  22.42490  01 28 34.614  +12 18 14.67  23.1r 14UL225   568  C~2Gdr      
2014 10  22.46432  01 28 34.418  +12 18 13.45  23.1r 14UL225   568  C~2Gdr      
2014 10  22.50375  01 28 34.216  +12 18 12.18  22.9r 14UL225   568  C~2Gdr      
2014 10  23.42083  01 28 29.664  +12 17 43.07  22.9r 14UL225   568  C~2Gdr      
2014 10  25.42600  01 28 19.740  +12 16 39.46  23.2r 14UL225   568  C~2Gdr      
2014 11  19.23322  01 26 26.872  +12 03 59.58  23.2r 14UL225   568  C~2Gdr      
2014 11  19.36622  01 26 26.330  +12 03 55.82  23.1r 14UL225   568  C~2Gdr      
2014 11  21.21474  01 26 19.114  +12 03 03.98  23.3r 14UL225   568  C~2Gdr      
2014 11  21.37712  01 26 18.466  +12 02 59.61  23.5r 14UL225   568  C~2Gdr      
2015 02  18.23136  01 26 35.521  +11 54 53.24  23.2r 14UL225   568  C~2Gdr      
2015 02  18.25610  01 26 35.627  +11 54 53.75  23.4r 14UL225   568  C~2Gdr      
2015 09  15.51502  01 38 18.289  +13 00 25.13  23.4w 14UL225   568  C~2Gdr      
2015 09  15.51940  01 38 18.270  +13 00 25.03  23.4w 14UL225   568  C~2Gdr      
2015 09  15.57438  01 38 18.049  +13 00 23.78  23.3w 14UL225   568  C~2Gdr      
2015 09  15.57846  01 38 18.033  +13 00 23.70  23.4w 14UL225   568  C~2Gdr      
2015 10  09.44415  01 36 30.154  +12 49 54.88  23.2w 14UL225   568  C~2Gdr      
2015 10  09.48680  01 36 29.942  +12 49 53.61  23.2w 14UL225   568  C~2Gdr      
2015 10  13.48307  01 36 10.100  +12 47 53.49        14UL225   568  C~2Gdr      
2017 01  31.22024  01 38 42.739  +12 38 32.41  23.4w 14UL225   568  C~2Gdr      

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    -0.01       0.00    -0.05
  2   0.0001     -1.99     0.02      -0.04    -0.17
  3   0.1611  -4212.26    -0.10     -51.08    -0.05
  4   0.1638  -4287.89     0.03     -54.37     0.02
  5   0.1639  -4288.44    -0.16     -54.35     0.05
  6   0.1664  -4359.71     0.06     -57.63     0.08
  7   0.1665  -4362.79     0.01     -57.82     0.00
  8   0.1668  -4370.03    -0.06     -58.03     0.08
  9   0.2378  -6090.06     0.08    -176.02    -0.01
 10   0.2569  -6437.77     0.00    -215.73    -0.02
 11   0.3252  -7118.96     0.04    -376.26    -0.11
 12   0.3252  -7119.04     0.06    -376.26    -0.04
 13   0.8952   6920.32     0.04    -859.67    -0.04
 14   0.8954   6920.49     0.00    -859.50     0.01
 15   0.8955   6920.77     0.07    -859.35     0.04
 16   0.9747   6459.19     0.05    -800.49     0.08
 17   0.9749   6457.38     0.04    -800.41     0.07
 18   0.9802   6383.42     0.11    -797.51     0.08
 19   0.9802   6383.12    -0.02    -797.59    -0.02
 20   0.9802   6383.00     0.04    -797.53     0.04
 21   0.9802   6382.96     0.17    -797.49     0.07
 22   0.9802   6382.49    -0.12    -797.56    -0.01
 23   0.9802   6382.34    -0.10    -797.58    -0.04
 24   0.9854   6305.25    -0.04    -794.82     0.09
 25   0.9857   6301.12     0.00    -794.61     0.12
 26   1.0454   5101.50    -0.04    -778.65    -0.09
 27   1.0456   5098.54    -0.00    -778.53     0.00
 28   1.0594   4754.58    -0.08    -779.17     0.00
 29   1.0702   4470.53    -0.38    -780.61     0.39
 30   1.0704   4466.45 (  -0.49)   -780.19 (   0.84)
 31   1.1387   2529.16     0.01    -821.18    -0.08
 32   1.1388   2526.04     0.07    -821.25    -0.07
 33   1.1389   2522.82     0.04    -821.34    -0.07
 34   1.1414   2450.07     0.01    -823.83    -0.09
 35   1.1469   2291.39     0.14    -829.37    -0.07
 36   1.2148    472.68     0.01    -924.28    -0.07
 37   1.2152    463.91    -0.01    -924.83    -0.06
 38   1.2202    346.38     0.06    -933.80    -0.09
 39   1.2207    335.93    -0.01    -934.34     0.07
 40   1.4639    388.39    -0.04   -1478.81     0.01
 41   1.4640    390.02    -0.07   -1478.92     0.04
 42   2.0369  11418.33    -0.01   -1575.00    -0.01
 43   2.0369  11418.03    -0.03   -1574.99    -0.01
 44   2.0371  11414.56    -0.02   -1574.99    -0.04
 45   2.0371  11414.31    -0.00   -1574.98    -0.03
 46   2.1024   9711.94     0.03   -1592.78     0.04
 47   2.1026   9708.59     0.06   -1592.84     0.02
 48   2.1135   9393.89     0.04   -1599.91    -0.05
 49   3.4160  11280.11    -0.03   -2930.69    -0.01

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.

14UL225    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        46.792    46.801    46.784
ecceobj         0.206     0.206     0.205
incobj          7.935     7.934     7.934
qmin           36.028    35.977    36.009
qmax           57.275    57.261    57.227
amean          46.403    46.401    46.408
amin           45.995    45.993    45.998
amax           46.920    46.901    46.902
emean           0.206     0.206     0.207
emin            0.191     0.191     0.192
emax            0.223     0.222     0.222
imean           9.188     9.189     9.191
imin            8.456     8.456     8.451
imax           10.098    10.111    10.100
excite_mean     0.261     0.261     0.261
fracstop        1.000     1.000     1.000
cjmean          3.047     3.047     3.046

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       187.3     187.1     187.3
kozaiamp        179.9     180.0     180.0