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 Sat Nov 17 02:08:40 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   33 observations of   33
# Arc:  10.03y
# First observation: 2005/07/07
#  Last observation: 2015/07/19
# Chi-squared of fit:    18.25 DOF:   60 RMS:  0.13
# Min/Max residuals:    -0.30    0.29
# Exact a, adot, b, bdot, g, gdot:
  1.474448E-05  2.517155E-02  1.072117E-05  1.907496E-02  2.579600E-02  6.231673E-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:              2453558.5000  =  2005/07/07
Mean Anomaly:            0.79972 +/-     0.002
Argument of Peri:      358.54045 +/-     0.006
Long of Asc Node:      297.29022 +/-     0.000
Inclination:            37.18670 +/-     0.000
Eccentricity:         0.50880647 +/-    0.0001
Semi-Major Axis:     80.90220245 +/-    0.0140
Time of Perihelion: 2452968.0655 +/-       1.3
Perihelion:          39.73863802 +/-    0.0091
Aphelion:           122.06576688 +/-    0.0219
Period (y)              727.6939 +/-      0.19
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           18.90760596 +/-    0.0004
Ecliptic Y          -34.96629863 +/-    0.0008
Ecliptic Z            0.58503905 +/-    0.0000
Ecliptic XDOT         0.00236081 +/-    0.0000
Ecliptic YDOT         0.00124646 +/-    0.0000
Ecliptic ZDOT         0.00202532 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.75526223 +/-    0.0007
Geocenter to KBO     38.76571600 +/-    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     0.10       0.00     0.22
  2   0.0001      0.00    -0.17       0.00     0.04
  3   0.0001      0.00     0.00       0.00    -0.26
  4   0.0028      0.00     0.01       0.00     0.05
  5   7.3287      0.00    -0.21       0.00     0.02
  6   7.3287      0.00     0.10       0.00    -0.21
  7   7.3287      0.00     0.04       0.00     0.05
  8   7.3287      0.00     0.12       0.00     0.13
  9   8.0139      0.00     0.18       0.00     0.06
 10   8.0140      0.00     0.01       0.00     0.01
 11   8.0140      0.00     0.03       0.00    -0.30
 12   9.0513      0.00     0.14       0.00     0.04
 13   9.0514      0.00     0.18       0.00     0.06
 14   9.0514      0.00     0.03       0.00    -0.11
 15   9.2098      0.00     0.04       0.00    -0.05
 16   9.2098      0.00    -0.08       0.00    -0.07
 17   9.2099      0.00     0.12       0.00     0.04
 18   9.2099      0.00    -0.29       0.00     0.29
 19   9.2151      0.00     0.17       0.00    -0.01
 20   9.2151      0.00    -0.07       0.00    -0.00
 21   9.2152      0.00    -0.11       0.00    -0.27
 22   9.2152      0.00     0.05       0.00     0.15
 23   9.9441      0.00    -0.11       0.00    -0.19
 24   9.9442      0.00    -0.13       0.00    -0.07
 25   9.9442      0.00    -0.11       0.00    -0.19
 26   9.9715      0.00    -0.05       0.00     0.20
 27   9.9716      0.00    -0.00       0.00     0.14
 28   9.9716      0.00     0.11       0.00     0.18
 29   9.9716      0.00     0.05       0.00     0.04
 30  10.0315      0.00    -0.04       0.00    -0.11
 31  10.0315      0.00    -0.01       0.00     0.18
 32  10.0316      0.00    -0.01       0.00    -0.03
 33  10.0316      0.00     0.09       0.00     0.04

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        80.856    80.856    80.856
ecceobj         0.509     0.509     0.509
incobj         37.182    37.182    37.182
qmin           37.473    37.269    37.550
qmax          126.664   126.460   126.605
amean          80.830    80.803    80.821
amin           79.653    79.707    79.639
amax           82.526    82.386    82.485
emean           0.518     0.519     0.517
emin            0.501     0.501     0.501
emax            0.536     0.537     0.535
imean          38.203    38.111    38.232
imin           37.594    37.475    37.629
imax           39.002    39.002    39.002
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        62.8      64.7      61.7
kozaiamp        180.0     180.0     180.0