Orbit Fit and Astrometric record for 14UM225

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: 14UM225   
# Created Sat Dec 16 02:38:06 2017
# Orbit generated from Bernstein formalism
# Fitting   42 observations of   42
# Arc:   2.33y
# First observation: 2013/08/08
#  Last observation: 2015/12/07
Preliminary a, adot, b, bdot, g, gdot:
  -0.000113   0.025003   0.000012   0.008152   0.025193   0.000000
# Chi-squared of fit:     8.73 DOF:   78 RMS:  0.08
# Min/Max residuals:    -0.17    0.21
# Exact a, adot, b, bdot, g, gdot:
  1.556822E-05  2.485784E-02  4.438231E-06  8.122825E-03  2.516393E-02  8.890976E-04
# Covariance matrix:
  1.4677E-13 -1.7654E-14 -1.0424E-14  3.2211E-14  9.0703E-14  1.9145E-12
 -1.7654E-14  2.4494E-13 -4.2586E-14  1.4110E-13  1.6187E-13  8.4032E-12
 -1.0424E-14 -4.2586E-14  1.0723E-13 -1.1103E-13 -3.8676E-14 -2.3402E-12
  3.2211E-14  1.4110E-13 -1.1103E-13  2.1577E-13  1.2560E-13  7.8183E-12
  9.0703E-14  1.6187E-13 -3.8676E-14  1.2560E-13  2.0280E-13  7.4763E-12
  1.9145E-12  8.4032E-12 -2.3402E-12  7.8183E-12  7.4763E-12  4.6573E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.412310   23.743217    0.940926    0.016143   -0.382325  2456513.056438
# Heliocentric elements and errors
Epoch:              2456510.5000  =  2013/08/06
Mean Anomaly:            4.82819 +/-     0.414
Argument of Peri:        1.68118 +/-     0.510
Long of Asc Node:       15.15263 +/-     0.000
Inclination:            18.29218 +/-     0.001
Eccentricity:         0.10088717 +/-    0.0001
Semi-Major Axis:     44.61488831 +/-    0.0031
Time of Perihelion: 2455050.6790 +/-     125.0
Perihelion:          40.11381828 +/-    0.0066
Aphelion:            49.11595834 +/-    0.0069
Period (y)              298.0080 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.07238646 +/-    0.0007
Ecliptic Y           15.28229018 +/-    0.0003
Ecliptic Z            1.67285674 +/-    0.0000
Ecliptic XDOT        -0.00104076 +/-    0.0000
Ecliptic YDOT         0.00249869 +/-    0.0000
Ecliptic ZDOT         0.00088720 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.13363528 +/-    0.0006
Geocenter to KBO     39.73941770 +/-    0.0007
# Hcoef:  7.55

The following table shows the complete astrometric record for 14UM225. 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 (14UM225) followed by the observatory code and reference code for the source of the astrometry.

2013 08  08.55566  01 24 16.785  +11 27 25.84  23.0r 14UM225   568  C~2Gdr      
2013 08  08.59934  01 24 16.728  +11 27 25.95  22.3r 14UM225   568  C~2Gdr      
2013 09  01.52570  01 23 17.938  +11 24 57.79  23.7r 14UM225   568  C~2Gdr      
2013 09  01.56454  01 23 17.794  +11 24 57.33  23.7r 14UM225   568  C~2Gdr      
2013 09  02.51296  01 23 14.573  +11 24 45.76  23.5r 14UM225   568  C~2Gdr      
2013 09  02.56252  01 23 14.405  +11 24 45.16  23.4r 14UM225   568  C~2Gdr      
2013 10  09.40083  01 20 33.998  +11 13 04.04  23.3r 14UM225   568  C~2Gdr      
2013 10  30.37669  01 18 51.366  +11 04 32.43  23.4r 14UM225   568  C~2Gdr      
2013 10  31.36761  01 18 46.696  +11 04 08.62  23.4r 14UM225   568  C~2Gdr      
2013 11  01.31349  01 18 42.262  +11 03 45.52  23.4r 14UM225   568  C~2Gdr      
2013 11  01.35271  01 18 42.070  +11 03 44.68  23.3r 14UM225   568  C~2Gdr      
2013 11  01.44470  01 18 41.636  +11 03 42.47  23.4r 14UM225   568  C~2Gdr      
2013 11  27.36654  01 16 56.097  +10 54 25.59  23.6r 14UM225   568  C~2Gdr      
2013 12  04.35092  01 16 34.870  +10 52 30.97  23.6r 14UM225   568  C~2Gdr      
2013 12  29.32307  01 15 53.085  +10 48 47.66  23.5r 14UM225   568  C~2Gdr      
2013 12  30.20391  01 15 52.691  +10 48 45.72  23.8r 14UM225   568  C~2Gdr      
2013 12  30.29352  01 15 52.639  +10 48 45.38  23.8r 14UM225   568  C~2Gdr      
2013 12  30.29947  01 15 52.653  +10 48 45.48  23.8r 14UM225   568  C~2Gdr      
2014 07  25.52856  01 29 09.238  +12 23 39.80  24.0r 14UM225   568  C~2Gdr      
2014 07  25.57013  01 29 09.232  +12 23 40.16  23.8r 14UM225   568  C~2Gdr      
2014 07  25.61177  01 29 09.227  +12 23 40.63  23.7r 14UM225   568  C~2Gdr      
2014 08  23.61501  01 28 29.487  +12 24 19.03  23.4r 14UM225   568  C~2Gdr      
2014 08  27.46040  01 28 18.886  +12 23 51.08  23.4r 14UM225   568  C~2Gdr      
2014 08  27.60325  01 28 18.459  +12 23 49.88  23.6r 14UM225   568  C~2Gdr      
2014 09  18.39638  01 26 58.969  +12 19 02.81  23.1r 14UM225   568  C~2Gdr      
2014 09  18.43577  01 26 58.798  +12 19 02.12  23.4r 14UM225   568  C~2Gdr      
2014 09  23.47669  01 26 36.638  +12 17 29.12  23.6r 14UM225   568  C~2Gdr      
2014 10  22.43708  01 24 16.295  +12 06 34.82  23.2r 14UM225   568  C~2Gdr      
2014 10  22.47652  01 24 16.102  +12 06 33.86  23.4r 14UM225   568  C~2Gdr      
2014 10  22.51541  01 24 15.902  +12 06 32.87  23.2r 14UM225   568  C~2Gdr      
2014 10  23.43604  01 24 11.359  +12 06 10.25  23.4r 14UM225   568  C~2Gdr      
2014 10  25.44113  01 24 01.510  +12 05 21.09  23.5r 14UM225   568  C~2Gdr      
2014 11  19.24852  01 22 09.649  +11 55 40.07  23.4r 14UM225   568  C~2Gdr      
2014 11  19.38146  01 22 09.117  +11 55 37.31  23.4r 14UM225   568  C~2Gdr      
2014 11  21.22724  01 22 01.950  +11 54 58.69  23.4r 14UM225   568  C~2Gdr      
2014 11  21.38890  01 22 01.318  +11 54 55.27  23.4r 14UM225   568  C~2Gdr      
2015 01  19.25806  01 20 40.115  +11 47 20.23  24.0r 14UM225   568  C~2Gdr      
2015 01  19.30409  01 20 40.174  +11 47 20.37  23.7r 14UM225   568  C~2Gdr      
2015 02  18.25202  01 22 03.474  +11 55 36.61  23.5r 14UM225   568  C~2Gdr      
2015 12  07.21672  01 25 53.526  +12 48 13.71  23.4r 14UM225   568  C~2Gdr      
2015 12  07.28352  01 25 53.332  +12 48 12.61  23.2r 14UM225   568  C~2Gdr      
2015 12  07.45332  01 25 52.840  +12 48 09.78  23.6w 14UM225   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     0.14
  2   0.0001     -0.74     0.20       0.41     0.18
  3   0.0656   -858.19     0.07     184.34    -0.08
  4   0.0657   -860.32    -0.06     184.70    -0.02
  5   0.0683   -908.58    -0.06     191.59     0.01
  6   0.0685   -911.10     0.03     191.96    -0.01
  7   0.1693  -3361.88    -0.16     422.58    -0.16
  8   0.2268  -4954.59    -0.10     515.01    -0.09
  9   0.2295  -5027.29     0.07     518.79     0.08
 10   0.2321  -5096.50    -0.04     521.92    -0.14
 11   0.2322  -5099.44    -0.07     522.21    -0.01
 12   0.2324  -5106.19    -0.01     522.56    -0.03
 13   0.3034  -6756.96     0.07     592.04     0.07
 14   0.3225  -7090.14     0.09     603.93     0.03
 15   0.3909  -7745.32    -0.04     629.79     0.21
 16   0.3933  -7751.44     0.02     630.19     0.09
 17   0.3935  -7752.27    -0.14     630.17    -0.03
 18   0.3935  -7752.05     0.14     630.18    -0.02
 19   0.9609   5236.21     0.02    1549.64    -0.12
 20   0.9610   5236.26    -0.00    1550.01    -0.14
 21   0.9611   5236.36     0.04    1550.47    -0.07
 22   1.0405   4708.77    -0.06    1800.30    -0.02
 23   1.0511   4554.00    -0.01    1831.46    -0.04
 24   1.0515   4547.74     0.00    1832.65    -0.08
 25   1.1111   3358.75    -0.01    1995.17    -0.07
 26   1.1112   3356.17    -0.00    1995.46    -0.08
 27   1.1250   3019.93     0.14    2028.99    -0.00
 28   1.2043    866.04    -0.08    2183.62     0.07
 29   1.2044    863.05    -0.01    2183.78     0.06
 30   1.2045    859.96    -0.08    2183.95     0.05
 31   1.2071    789.69    -0.17    2187.71     0.04
 32   1.2126    637.31    -0.02    2195.76     0.06
 33   1.2805  -1102.32     0.03    2267.89    -0.01
 34   1.2808  -1110.60     0.10    2268.25     0.02
 35   1.2859  -1222.61    -0.02    2271.69     0.06
 36   1.2863  -1232.49    -0.05    2271.98    -0.03
 37   1.4475  -2508.43     0.13    2295.75     0.07
 38   1.4476  -2507.58     0.01    2295.55    -0.12
 39   1.5296  -1187.70     0.03    2298.52     0.02
 40   2.3290   3115.92     0.05    3976.90     0.06
 41   2.3292   3112.88     0.03    3976.93     0.04
 42   2.3296   3105.14    -0.08    3976.96    -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.

14UM225    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        44.855    44.868    44.842
ecceobj         0.106     0.107     0.105
incobj         18.244    18.244    18.243
qmin           39.407    39.578    39.103
qmax           49.990    49.874    50.333
amean          44.554    44.554    44.554
amin           44.167    44.184    44.152
amax           44.982    44.986    44.971
emean           0.100     0.097     0.104
emin            0.088     0.082     0.088
emax            0.113     0.110     0.120
imean          18.155    18.210    18.095
imin           17.740    17.847    17.622
imax           18.509    18.586    18.516
excite_mean     0.327     0.327     0.328
fracstop        1.000     1.000     1.000
cjmean          2.975     2.976     2.975

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       165.9     168.2     171.5
kozaiamp        179.9     180.0     180.0