Orbit Fit and Astrometric record for 05NU125

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: 05NU125   
# Created Tue Dec 12 02:37:29 2017
# Orbit generated from Bernstein formalism
# Fitting   33 observations of   33
# Arc:  10.03y
# First observation: 2005/07/07
#  Last observation: 2015/07/19
Preliminary a, adot, b, bdot, g, gdot:
  -0.000400   0.025573  -0.001067   0.019314   0.029512   0.000000
# Chi-squared of fit:    19.72 DOF:   60 RMS:  0.14
# Min/Max residuals:    -0.31    0.36
# Exact a, adot, b, bdot, g, gdot:
  1.476027E-05  2.517158E-02  1.071644E-05  1.907495E-02  2.579599E-02  6.231512E-04
# Covariance matrix:
  3.5798E-13 -6.0620E-14  1.0120E-14 -1.8091E-14 -7.2923E-15 -9.4912E-14
 -6.0620E-14  8.9669E-14 -3.1814E-14  6.3623E-14  1.4140E-13  3.3264E-13
  1.0120E-14 -3.1814E-14  3.5401E-13 -6.0957E-14 -4.8487E-14 -1.2482E-13
 -1.8091E-14  6.3623E-14 -6.0957E-14  5.2225E-14  1.0412E-13  2.4896E-13
 -7.2923E-15  1.4140E-13 -4.8487E-14  1.0412E-13  3.4111E-13  5.4330E-13
 -9.4912E-14  3.3264E-13 -1.2482E-13  2.4896E-13  5.4330E-13  1.3017E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.864051  -61.258839    0.231820    0.015007   -0.990000  2453558.919243
# Heliocentric elements and errors
Epoch:              2453550.5000  =  2005/06/29
Mean Anomaly:            0.78884 +/-     0.002
Argument of Peri:      358.54056 +/-     0.006
Long of Asc Node:      297.29022 +/-     0.000
Inclination:            37.18665 +/-     0.000
Eccentricity:         0.50881028 +/-    0.0001
Semi-Major Axis:     80.90286701 +/-    0.0140
Time of Perihelion: 2452968.0870 +/-       1.3
Perihelion:          39.73865665 +/-    0.0091
Aphelion:           122.06707738 +/-    0.0219
Period (y)              727.7028 +/-      0.19
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           18.90761493 +/-    0.0004
Ecliptic Y          -34.96631371 +/-    0.0008
Ecliptic Z            0.58503913 +/-    0.0000
Ecliptic XDOT         0.00236082 +/-    0.0000
Ecliptic YDOT         0.00124647 +/-    0.0000
Ecliptic ZDOT         0.00202532 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.75529232 +/-    0.0007
Geocenter to KBO     38.76572199 +/-    0.0009
# Hcoef:  6.32

The following table shows the complete astrometric record for 05NU125. 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 (05NU125) followed by the observatory code and reference code for the source of the astrometry.

2005 07  07.41850  20 02 43.54   -19 33 58.4   23.2g 05NU125   568  C~0Dq4      
2005 07  07.44504  20 02 43.38   -19 33 58.7   23.1g 05NU125   568  C~0Dq4      
2005 07  07.47158  20 02 43.25   -19 33 59.1   22.9g 05NU125   568  C~0Dq4      
2005 07  08.42725  20 02 38.23   -19 34 02.7   23.1g 05NU125   568  C~0Dq4      
2012 11  04.21798  20 29 59.730  -10 12 14.11  22.4w 05NU125   F51  C~1vVR      
2012 11  04.22352  20 29 59.759  -10 12 14.33  22.4w 05NU125   F51  C~1vVR      
2012 11  04.22906  20 29 59.763  -10 12 14.05  22.5w 05NU125   F51  C~1vVR      
2012 11  04.23458  20 29 59.776  -10 12 13.96  22.5w 05NU125   F51  C~1vVR      
2013 07  12.48966  20 40 13.603  -08 34 48.18  22.3w 05NU125   F51  C~1vVR      
2013 07  12.51960  20 40 13.446  -08 34 48.33  22.2w 05NU125   F51  C~1vVR      
2013 07  12.53460  20 40 13.374  -08 34 48.69  22.1w 05NU125   F51  C~1vVR      
2014 07  26.41630  20 43 31.848  -07 14 10.52  22.5w 05NU125   F51  C~1vVR      
2014 07  26.42861  20 43 31.788  -07 14 10.59  22.5w 05NU125   F51  C~1vVR      
2014 07  26.44092  20 43 31.715  -07 14 10.86  22.2w 05NU125   F51  C~1vVR      
2014 09  22.29148  20 39 20.926  -07 26 34.10  22.3w 05NU125   F51  C~1vVR      
2014 09  22.30565  20 39 20.877  -07 26 34.31  22.3w 05NU125   F51  C~1vVR      
2014 09  22.31987  20 39 20.849  -07 26 34.40  22.2w 05NU125   F51  C~1vVR      
2014 09  22.33406  20 39 20.781  -07 26 34.34  22.0w 05NU125   F51  C~1vVR      
2014 09  24.23362  20 39 15.659  -07 27 00.33  22.5w 05NU125   F51  C~1vVR      
2014 09  24.24794  20 39 15.604  -07 27 00.52  22.3w 05NU125   F51  C~1vVR      
2014 09  24.26211  20 39 15.563  -07 27 00.98  22.7w 05NU125   F51  C~1vVR      
2014 09  24.27633  20 39 15.535  -07 27 00.75  22.4w 05NU125   F51  C~1vVR      
2015 06  17.51662  20 50 43.494  -05 53 00.78  22.3w 05NU125   F51  C~1vVR      
2015 06  17.54263  20 50 43.404  -05 53 00.42  22.4w 05NU125   F51  C~1vVR      
2015 06  17.55563  20 50 43.361  -05 53 00.41  22.6w 05NU125   F51  C~1vVR      
2015 06  27.52487  20 50 07.093  -05 51 50.08  22.6w 05NU125   F51  C~1vVR      
2015 06  27.53734  20 50 07.046  -05 51 50.08  22.3w 05NU125   F51  C~1vVR      
2015 06  27.54978  20 50 07.003  -05 51 49.98  22.5w 05NU125   F51  C~1vVR      
2015 06  27.56222  20 50 06.949  -05 51 50.06  22.7w 05NU125   F51  C~1vVR      
2015 07  19.42037  20 48 29.782  -05 51 55.90  22.5w 05NU125   F51  C~1vVR      
2015 07  19.43307  20 48 29.721  -05 51 55.67  22.4w 05NU125   F51  C~1vVR      
2015 07  19.44578  20 48 29.659  -05 51 55.94  22.5w 05NU125   F51  C~1vVR      
2015 07  19.45849  20 48 29.603  -05 51 55.94  22.3w 05NU125   F51  C~1vVR      

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     0.14       0.00     0.20
  2   0.0001     -2.28    -0.15       0.17     0.07
  3   0.0001     -4.16    -0.05       0.15    -0.25
  4   0.0028    -74.36     0.02      11.02     0.05
  5   7.3287  30924.50    -0.21   28051.09     0.07
  6   7.3287  30924.87     0.04   28050.77    -0.24
  7   7.3287  30925.00     0.05   28051.04     0.04
  8   7.3287  30925.21     0.14   28051.09     0.10
  9   8.0139  41607.26     0.19   31831.68     0.02
 10   8.0140  41604.85     0.01   31832.08     0.01
 11   8.0140  41603.66    -0.05   31831.96    -0.31
 12   9.0513  45945.32     0.15   36077.03     0.01
 13   9.0514  45944.38     0.20   36077.17     0.02
 14   9.0514  45943.19    -0.01   36077.15    -0.12
 15   9.2098  41916.85     0.02   36194.74    -0.06
 16   9.2098  41916.05    -0.11   36194.70    -0.05
 17   9.2099  41915.60     0.12   36194.70     0.01
 18   9.2099  41914.59    -0.22   36195.00     0.36
 19   9.2151  41829.75     0.16   36186.21    -0.04
 20   9.2151  41828.86    -0.08   36186.21     0.01
 21   9.2152  41828.12    -0.19   36185.88    -0.25
 22   9.2152  41827.75     0.09   36186.22     0.14
 23   9.9441  54008.49    -0.17   39579.16    -0.17
 24   9.9442  54007.19    -0.17   39579.86    -0.05
 25   9.9442  54006.52    -0.18   39580.03    -0.17
 26   9.9715  53461.39    -0.00   39783.60     0.22
 27   9.9716  53460.65     0.03   39783.77     0.14
 28   9.9716  53460.01     0.16   39784.02     0.16
 29   9.9716  53459.15     0.06   39784.14     0.03
 30  10.0315  51944.15    -0.08   40125.45    -0.11
 31  10.0315  51943.26     0.03   40125.91     0.19
 32  10.0316  51942.22    -0.02   40125.85    -0.03
 33  10.0316  51941.35     0.10   40126.05     0.02

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.

05NU125    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        80.866    80.908    80.825
ecceobj         0.509     0.509     0.508
incobj         37.181    37.181    37.181
qmin           37.033    37.258    37.343
qmax          127.267   127.179   126.870
amean          80.872    80.956    80.877
amin           79.695    79.763    79.766
amax           82.541    82.628    82.493
emean           0.523     0.522     0.518
emin            0.501     0.502     0.501
emax            0.542     0.539     0.538
imean          37.964    38.030    38.183
imin           37.300    37.459    37.513
imax           39.002    39.011    39.007
excite_mean     0.807     0.807     0.807
fracstop        1.000     1.000     1.000
cjmean          2.575     2.575     2.575

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        70.4      68.7      61.4
kozaiamp        180.0     180.0     180.0