Orbit Fit and Astrometric record for 14UJ225

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: 14UJ225   
# Created Sat Dec 16 02:38:06 2017
# Orbit generated from Bernstein formalism
# Fitting   29 observations of   29
# Arc:   1.47y
# First observation: 2013/09/01
#  Last observation: 2015/02/19
Preliminary a, adot, b, bdot, g, gdot:
  -0.000259   0.084175  -0.000069   0.032444   0.057302   0.000000
# Chi-squared of fit:     2.26 DOF:   52 RMS:  0.05
# Min/Max residuals:    -0.11    0.13
# Exact a, adot, b, bdot, g, gdot:
  2.322139E-05  8.195704E-02  8.660323E-06  3.133734E-02  5.670305E-02 -2.611848E-02
# Covariance matrix:
  3.6364E-13  5.9587E-13 -6.3804E-14  4.7338E-13  5.1754E-13  1.1372E-11
  5.9587E-13  3.7788E-12 -3.0643E-13  2.2956E-12  2.0419E-12  5.5212E-11
 -6.3804E-14 -3.0643E-13  1.7758E-13 -3.4138E-13 -1.7553E-13 -4.7309E-12
  4.7338E-13  2.2956E-12 -3.4138E-13  1.6767E-12  1.3076E-12  3.5447E-11
  5.1754E-13  2.0419E-12 -1.7553E-13  1.3076E-12  1.3180E-12  3.1429E-11
  1.1372E-11  5.5212E-11 -4.7309E-12  3.5447E-11  3.1429E-11  8.5255E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.906910   25.949679    0.738948    0.022980   -0.688529  2456537.045898
# Heliocentric elements and errors
Epoch:              2456530.5000  =  2013/08/26
Mean Anomaly:          322.03517 +/-     0.019
Argument of Peri:       81.87903 +/-     0.016
Long of Asc Node:       18.94000 +/-     0.000
Inclination:            21.31440 +/-     0.000
Eccentricity:         0.38031612 +/-    0.0004
Semi-Major Axis:     23.29949810 +/-    0.0074
Time of Perihelion: 2460862.5871 +/-       0.5
Perihelion:          14.43832346 +/-    0.0095
Aphelion:            32.16067275 +/-    0.0132
Period (y)              112.4678 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           16.79127713 +/-    0.0003
Ecliptic Y            7.35265473 +/-    0.0001
Ecliptic Z            0.58701457 +/-    0.0000
Ecliptic XDOT        -0.00291640 +/-    0.0000
Ecliptic YDOT         0.00298359 +/-    0.0000
Ecliptic ZDOT         0.00147043 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   18.33993199 +/-    0.0003
Geocenter to KBO     17.63573465 +/-    0.0004
# Hcoef: 10.59

The following table shows the complete astrometric record for 14UJ225. 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 (14UJ225) followed by the observatory code and reference code for the source of the astrometry.

2013 09  01.54512  01 33 24.664  +11 47 59.45  23.3r 14UJ225   568  C~2Gdq      
2013 09  01.58399  01 33 24.411  +11 47 58.99  23.0r 14UJ225   568  C~2Gdq      
2013 09  02.54308  01 33 18.211  +11 47 46.27  23.3r 14UJ225   568  C~2Gdq      
2013 10  09.38918  01 27 51.226  +11 30 02.93  22.9r 14UJ225   568  C~2Gdq      
2013 10  29.45275  01 24 21.925  +11 16 00.72  22.8r 14UJ225   568  C~2Gdq      
2013 10  30.36505  01 24 12.678  +11 15 22.26  22.8r 14UJ225   568  C~2Gdq      
2013 10  31.35588  01 24 02.682  +11 14 40.72  23.2r 14UJ225   568  C~2Gdq      
2013 11  01.30170  01 23 53.199  +11 14 01.14  23.4r 14UJ225   568  C~2Gdq      
2013 11  01.34074  01 23 52.800  +11 13 59.60  23.1r 14UJ225   568  C~2Gdq      
2013 11  01.42897  01 23 51.899  +11 13 55.84  23.1r 14UJ225   568  C~2Gdq      
2013 11  27.36654  01 20 07.404  +10 58 22.28  23.1r 14UJ225   568  C~2Gdq      
2013 12  29.30196  01 18 02.805  +10 52 08.93  22.9r 14UJ225   568  C~2Gdq      
2014 07  26.54156  01 50 34.381  +15 02 41.05  23.0r 14UJ225   568  C~2Gdq      
2014 07  26.58476  01 50 34.448  +15 02 42.87  23.2r 14UJ225   568  C~2Gdq      
2014 08  24.48198  01 49 57.024  +15 14 36.43  23.3r 14UJ225   568  C~2Gdq      
2014 08  24.55192  01 49 56.711  +15 14 36.98  22.9r 14UJ225   568  C~2Gdq      
2014 08  27.58992  01 49 42.723  +15 14 55.95  24.7u 14UJ225   568  C~2Gdq      
2014 09  18.47464  01 47 13.073  +15 12 11.93  22.9r 14UJ225   568  C~2Gdq      
2014 09  18.51737  01 47 12.696  +15 12 11.10  23.2r 14UJ225   568  C~2Gdq      
2014 09  23.51567  01 46 28.113  +15 10 25.24  22.7r 14UJ225   568  C~2Gdq      
2014 10  22.29873  01 41 28.816  +14 54 15.70  23.0r 14UJ225   568  C~2Gdq      
2014 10  22.34444  01 41 28.310  +14 54 13.78  22.7r 14UJ225   568  C~2Gdq      
2014 10  22.38820  01 41 27.820  +14 54 12.06  22.6r 14UJ225   568  C~2Gdq      
2014 10  23.47137  01 41 15.930  +14 53 27.27  22.6r 14UJ225   568  C~2Gdq      
2014 10  25.48732  01 40 53.860  +14 52 03.28  22.5r 14UJ225   568  C~2Gdq      
2014 11  20.35900  01 36 31.244  +14 34 06.57  23.0r 14UJ225   568  C~2Gdq      
2014 11  21.25530  01 36 23.349  +14 33 32.27  23.3r 14UJ225   568  C~2Gdq      
2014 11  21.42173  01 36 21.860  +14 33 25.96  23.2r 14UJ225   568  C~2Gdq      
2015 02  19.23943  01 36 36.951  +14 42 53.87  23.2r 14UJ225   568  C~2Gdq      

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    -0.08       0.00     0.02
  2   0.0001     -3.63    -0.02       0.93     0.03
  3   0.0027    -93.01     0.02      22.36    -0.05
  4   0.1036  -4952.18     0.13     800.15    -0.03
  5   0.1585  -8125.91    -0.06    1161.50    -0.04
  6   0.1610  -8266.70    -0.09    1176.55    -0.03
  7   0.1638  -8418.90     0.03    1192.88     0.00
  8   0.1663  -8563.36     0.01    1208.23    -0.01
  9   0.1664  -8569.39     0.02    1209.00     0.07
 10   0.1667  -8583.12    -0.02    1210.46     0.00
 11   0.2377 -12005.35    -0.03    1583.70    -0.03
 12   0.3251 -13853.30     0.09    1930.61    -0.02
 13   0.8980  18257.39     0.04    5552.66     0.02
 14   0.8981  18258.95     0.02    5554.04     0.06
 15   0.9772  17999.53    -0.04    6415.65     0.03
 16   0.9774  17995.45    -0.04    6417.75    -0.00
 17   0.9857  17811.09     0.02    6506.49     0.08
 18   1.0457  15711.29     0.07    7113.14     0.01
 19   1.0458  15705.86     0.04    7114.28    -0.01
 20   1.0595  15060.82     0.04    7242.48    -0.01
 21   1.1383  10644.16    -0.06    7874.25     0.08
 22   1.1384  10636.60    -0.04    7875.08     0.01
 23   1.1385  10629.33    -0.03    7876.01     0.07
 24   1.1415  10451.79    -0.01    7895.76    -0.04
 25   1.1470  10121.96    -0.01    7931.73    -0.07
 26   1.2178   6170.96    -0.05    8298.50    -0.02
 27   1.2203   6051.51    -0.06    8308.04    -0.01
 28   1.2207   6029.04    -0.02    8309.99    -0.01
 29   1.4667   6440.05     0.11    8761.10    -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.

14UJ225    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        23.330    23.332    23.328
ecceobj         0.378     0.378     0.378
incobj         21.262    21.262    21.262
qmin           14.289    14.278    14.298
qmax           32.446    32.769    32.712
amean          23.255    23.267    23.064
amin           23.057    23.059    22.285
amax           23.533    23.623    23.616
emean           0.378     0.379     0.367
emin            0.373     0.373     0.338
emax            0.382     0.387     0.385
imean          21.459    21.478    22.623
imin           21.279    21.279    21.279
imax           21.644    21.629    24.452
excite_mean     0.526     0.527     0.532
fracstop        0.001     0.002     0.008
cjmean          2.801     2.800     2.801

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        88.2      91.7     124.8
kozaiamp          6.7      10.0      40.0