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 Dec  4 02:10:25 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     85 observations of     85
# Arc:  16.09y
# First observation: 2005/07/07
#  Last observation: 2021/08/08
# Chi-squared of fit:    48.39 DOF:    164 RMS:  0.13
# Min/Max residuals:    -0.68    0.34
# Exact a, adot, b, bdot, g, gdot:
  1.480494E-05  2.517173E-02  1.079718E-05  1.907508E-02  2.579616E-02  6.240516E-04
# Covariance matrix:
  2.8347E-13 -4.3999E-14  5.9996E-14 -1.9012E-14 -7.9926E-15 -6.2258E-14
 -4.3999E-14  1.0188E-14 -1.9643E-14  6.2888E-15  6.9234E-15  2.0615E-14
  5.9996E-14 -1.9643E-14  2.5349E-13 -3.4442E-14 -1.2551E-14 -4.9435E-14
 -1.9012E-14  6.2888E-15 -3.4442E-14  6.7973E-15  4.7671E-15  1.5804E-14
 -7.9926E-15  6.9234E-15 -1.2551E-14  4.7671E-15  5.4769E-14  1.5876E-14
 -6.2258E-14  2.0615E-14 -4.9435E-14  1.5804E-14  1.5876E-14  5.1798E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.864051  -61.258839    0.231821    0.015007   -0.989999  2453558.919243
# Heliocentric elements and errors
Epoch:              2453558.5000  =  2005/07/07
Mean Anomaly:            0.80107 +/-     0.000
Argument of Peri:      358.53570 +/-     0.001
Long of Asc Node:      297.29021 +/-     0.000
Inclination:            37.18667 +/-     0.000
Eccentricity:         0.50880115 +/-    0.0000
Semi-Major Axis:     80.90070746 +/-    0.0071
Time of Perihelion: 2452967.0845 +/-       0.3
Perihelion:          39.73833445 +/-    0.0047
Aphelion:           122.06308046 +/-    0.0112
Period (y)              727.6737 +/-      0.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           18.90748866 +/-    0.0002
Ecliptic Y          -34.96607987 +/-    0.0003
Ecliptic Z            0.58503825 +/-    0.0000
Ecliptic XDOT         0.00236086 +/-    0.0000
Ecliptic YDOT         0.00124638 +/-    0.0000
Ecliptic ZDOT         0.00202532 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.75501400 +/-    0.0003
Geocenter to KBO     38.76546778 +/-    0.0004
# Hcoef:  6.44

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      
2010 05  13.57931  20 29 53.745  -12 47 28.59  21.5G 05NU125   F51  C~2rXj      
2010 07  20.42227  20 25 54.962  -12 42 49.37  22.4G 05NU125   F51  C~2rXj      
2011 07  26.43248  20 30 03.610  -11 20 48.86  23.5G 05NU125   F51  C~2rXj      
2011 10  19.22438  20 25 18.271  -11 32 38.97  22.5G 05NU125   F51  C~2rXj      
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 05  31.54317  20 47 10.674  -07 17 21.80  22.2G 05NU125   F51  C~2rXj      
2014 05  31.55625  20 47 10.664  -07 17 21.72  22.7G 05NU125   F51  C~2rXj      
2014 05  31.56928  20 47 10.630  -07 17 21.44  22.6G 05NU125   F51  C~2rXj      
2014 05  31.58236  20 47 10.591  -07 17 21.29  22.3G 05NU125   F51  C~2rXj      
2014 06  22.57841  20 46 05.010  -07 13 23.79  23.7G 05NU125   F51  C~2rXj      
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      
2014 09  24.32817  20 39 15.392  -07 27 01.57  22.6G 05NU125   F51  C~2rXj      
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 06  28.48255  20 50 03.307  -05 51 46.09  22.8G 05NU125   F51  C~2rXj      
2015 07  18.49718  20 48 34.225  -05 51 51.41  22.6G 05NU125   F51  C~2rXj      
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      
2015 08  12.33279  20 46 31.451  -05 55 30.60  22.3G 05NU125   F51  C~2rXj      
2015 08  12.34518  20 46 31.382  -05 55 30.94  22.8G 05NU125   F51  C~2rXj      
2015 08  12.35761  20 46 31.329  -05 55 31.19  22.4G 05NU125   F51  C~2rXj      
2015 08  12.37003  20 46 31.263  -05 55 31.17  22.5G 05NU125   F51  C~2rXj      
2015 09  09.28359  20 44 27.079  -06 02 23.35  22.8G 05NU125   F51  C~2rXj      
2016 06  05.51668  20 55 31.403  -04 35 05.01  22.4G 05NU125   F51  C~2rXj      
2016 06  05.54143  20 55 31.354  -04 35 04.59        05NU125   F51  C~2rXj      
2016 06  05.55382  20 55 31.320  -04 35 04.42  22.8G 05NU125   F51  C~2rXj      
2016 06  07.51094  20 55 26.528  -04 34 33.22  22.9G 05NU125   F51  C~2rXj      
2016 06  07.52321  20 55 26.497  -04 34 33.03  22.5G 05NU125   F51  C~2rXj      
2016 06  07.53546  20 55 26.471  -04 34 32.67  22.5G 05NU125   F51  C~2rXj      
2016 06  07.54776  20 55 26.445  -04 34 32.57  22.7G 05NU125   F51  C~2rXj      
2016 07  09.48692  20 53 31.337  -04 30 35.65  22.7G 05NU125   F51  C~2rXj      
2016 07  09.49918  20 53 31.273  -04 30 35.94  22.4G 05NU125   F51  C~2rXj      
2016 07  09.51144  20 53 31.210  -04 30 35.58  22.2G 05NU125   F51  C~2rXj      
2016 07  09.52370  20 53 31.163  -04 30 35.79  22.7G 05NU125   F51  C~2rXj      
2016 07  29.40599  20 51 56.481  -04 32 08.64  21.3G 05NU125   F51  C~2rXj      
2016 08  08.36805  20 51 07.195  -04 33 51.71  22.6G 05NU125   F51  C~2rXj      
2016 08  08.37980  20 51 07.131  -04 33 51.68  22.0G 05NU125   F51  C~2rXj      
2016 08  08.39152  20 51 07.074  -04 33 51.95  22.5G 05NU125   F51  C~2rXj      
2016 08  08.40328  20 51 07.012  -04 33 52.15  22.5G 05NU125   F51  C~2rXj      
2016 08  26.31836  20 49 41.913  -04 38 05.87  22.7G 05NU125   F51  C~2rXj      
2016 09  26.28997  20 47 49.309  -04 46 49.18  22.9G 05NU125   F51  C~2rXj      
2017 06  25.53489  20 58 44.641  -03 11 14.11  22.9G 05NU125   F51  C~2rXj      
2017 06  25.54690  20 58 44.600  -03 11 14.02  22.7G 05NU125   F51  C~2rXj      
2017 06  25.55893  20 58 44.549  -03 11 13.79  22.8G 05NU125   F51  C~2rXj      
2017 06  25.57098  20 58 44.518  -03 11 14.02  22.5G 05NU125   F51  C~2rXj      
2017 07  15.52953  20 57 20.907  -03 10 23.04  22.0G 05NU125   F51  C~2rXj      
2017 07  27.38353  20 56 24.458  -03 11 22.22  22.9G 05NU125   F51  C~2rXj      
2017 07  27.44553  20 56 24.165  -03 11 22.79  22.4G 05NU125   F51  C~2rXj      
2017 08  12.35893  20 55 06.086  -03 14 10.82  22.3G 05NU125   F51  C~2rXj      
2017 08  12.38369  20 55 05.971  -03 14 11.19  22.4G 05NU125   F51  C~2rXj      
2017 08  24.41164  20 54 08.946  -03 17 10.22  22.7G 05NU125   F51  C~2rXj      
2017 08  24.42366  20 54 08.886  -03 17 10.49  22.5G 05NU125   F51  C~2rXj      
2017 08  24.43568  20 54 08.828  -03 17 10.97  22.8G 05NU125   F51  C~2rXj      
2017 08  24.44768  20 54 08.775  -03 17 11.07  22.6G 05NU125   F51  C~2rXj      
2017 10  10.32789  20 51 36.772  -03 30 58.94  22.3G 05NU125   F51  C~2rXj      
2021 08  08.465885 21 12 10.644  +02 02 10.96  22.5w 05NU125   F51  C~4xNC      
2021 08  08.478686 21 12 10.587  +02 02 10.73  22.6w 05NU125   F51  C~4xNC      
2021 08  08.491616 21 12 10.506  +02 02 10.74  22.2w 05NU125   F51  C~4xNC      

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     0.09       0.00     0.21
     2   0.0001      0.00    -0.18       0.00     0.02
     3   0.0001      0.00    -0.01       0.00    -0.27
     4   0.0028      0.00     0.00       0.00     0.03
     5   4.8492      0.00     0.06       0.00     0.28
     6   5.0349      0.00     0.00       0.00     0.05
     7   6.0507      0.00     0.10       0.00    -0.24
     8   6.2828      0.00     0.05       0.00    -0.11
     9   7.3287      0.00    -0.25       0.00    -0.00
    10   7.3287      0.00     0.06       0.00    -0.24
    11   7.3287      0.00     0.00       0.00     0.03
    12   7.3287      0.00     0.08       0.00     0.10
    13   8.0139      0.00     0.16       0.00     0.06
    14   8.0140      0.00    -0.01       0.00     0.01
    15   8.0140      0.00     0.01       0.00    -0.30
    16   8.8984      0.00    -0.13       0.00    -0.03
    17   8.8984      0.00     0.15       0.00    -0.16
    18   8.8984      0.00     0.07       0.00    -0.08
    19   8.8985      0.00    -0.08       0.00    -0.14
    20   8.9587      0.00     0.08       0.00     0.34
    21   9.0513      0.00     0.15       0.00     0.08
    22   9.0514      0.00     0.19       0.00     0.10
    23   9.0514      0.00     0.03       0.00    -0.07
    24   9.2098      0.00     0.05       0.00    -0.01
    25   9.2098      0.00    -0.08       0.00    -0.03
    26   9.2099      0.00     0.12       0.00     0.08
    27   9.2099      0.00    -0.29       0.00     0.33
    28   9.2151      0.00     0.17       0.00     0.04
    29   9.2151      0.00    -0.07       0.00     0.04
    30   9.2152      0.00    -0.11       0.00    -0.23
    31   9.2152      0.00     0.05       0.00     0.19
    32   9.2154      0.00     0.03       0.00     0.06
    33   9.9441      0.00    -0.07       0.00    -0.11
    34   9.9442      0.00    -0.09       0.00     0.01
    35   9.9442      0.00    -0.07       0.00    -0.11
    36   9.9715      0.00    -0.01       0.00     0.28
    37   9.9716      0.00     0.04       0.00     0.22
    38   9.9716      0.00     0.14       0.00     0.26
    39   9.9716      0.00     0.09       0.00     0.13
    40   9.9742      0.00     0.13       0.00     0.03
    41  10.0290      0.00    -0.00       0.00     0.13
    42  10.0315      0.00     0.00       0.00    -0.03
    43  10.0315      0.00     0.02       0.00     0.27
    44  10.0316      0.00     0.03       0.00     0.06
    45  10.0316      0.00     0.13       0.00     0.12
    46  10.0970      0.00    -0.00       0.00     0.03
    47  10.0970      0.00    -0.11       0.00    -0.15
    48  10.0970      0.00     0.02       0.00    -0.24
    49  10.0971      0.00    -0.04       0.00    -0.07
    50  10.1735      0.00    -0.02       0.00    -0.04
    51  10.9133      0.00    -0.14       0.00    -0.05
    52  10.9134      0.00     0.03       0.00    -0.03
    53  10.9134      0.00    -0.02       0.00    -0.07
    54  10.9188      0.00    -0.09       0.00    -0.03
    55  10.9188      0.00    -0.08       0.00    -0.03
    56  10.9189      0.00     0.01       0.00     0.15
    57  10.9189      0.00     0.10       0.00     0.06
    58  11.0063      0.00     0.05       0.00     0.00
    59  11.0064      0.00    -0.07       0.00    -0.28
    60  11.0064      0.00    -0.18       0.00     0.08
    61  11.0064      0.00    -0.05       0.00    -0.12
    62  11.0609      0.00    -0.68       0.00    -0.06
    63  11.0882      0.00     0.10       0.00    -0.01
    64  11.0882      0.00     0.02       0.00     0.16
    65  11.0882      0.00     0.05       0.00     0.03
    66  11.0883      0.00     0.00       0.00    -0.03
    67  11.1373      0.00     0.03       0.00     0.05
    68  11.2221      0.00     0.09       0.00    -0.21
    69  11.9675      0.00    -0.06       0.00    -0.03
    70  11.9675      0.00    -0.00       0.00    -0.04
    71  11.9675      0.00    -0.09       0.00     0.10
    72  11.9676      0.00     0.13       0.00    -0.22
    73  12.0222      0.00     0.03       0.00    -0.21
    74  12.0547      0.00    -0.02       0.00     0.01
    75  12.0548      0.00     0.20       0.00    -0.09
    76  12.0984      0.00    -0.04       0.00     0.09
    77  12.0985      0.00     0.07       0.00     0.05
    78  12.1314      0.00     0.07       0.00     0.09
    79  12.1314      0.00     0.01       0.00     0.02
    80  12.1315      0.00    -0.02       0.00    -0.26
    81  12.1315      0.00     0.02       0.00    -0.17
    82  12.2598      0.00     0.22       0.00     0.07
    83  16.0877      0.00     0.02       0.00     0.08
    84  16.0878      0.00     0.11       0.00    -0.00
    85  16.0878      0.00    -0.16       0.00     0.16

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        80.854    80.854    80.854
ecceobj         0.509     0.509     0.509
incobj         37.182    37.182    37.182
qmin           37.224    37.425    37.131
qmax          126.981   126.962   127.137
amean          80.792    80.865    80.871
amin           79.620    79.715    79.691
amax           82.514    82.631    82.522
emean           0.520     0.519     0.521
emin            0.501     0.501     0.501
emax            0.539     0.537     0.541
imean          38.060    38.175    38.042
imin           37.425    37.557    37.341
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        66.3      63.8      66.6
kozaiamp        180.0     180.0     180.0