Orbit Fit and Astrometric record for 13UJ17

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: 13UJ17    
# Created Sat Dec  4 02:12:15 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     63 observations of     63
# Arc:   8.26y
# First observation: 2013/08/02
#  Last observation: 2021/11/05
# Chi-squared of fit:    18.18 DOF:    120 RMS:  0.09
# Min/Max residuals:    -0.19    0.31
# Exact a, adot, b, bdot, g, gdot:
  1.894648E-05  3.693401E-02  2.091958E-06  4.138312E-03  3.111397E-02 -1.072195E-03
# Covariance matrix:
  1.0893E-13 -3.4046E-14  3.5875E-15 -3.5694E-15  5.6053E-14 -1.0531E-13
 -3.4046E-14  5.3264E-14 -4.2500E-15  5.7680E-15  1.7065E-14  1.7329E-13
  3.5875E-15 -4.2500E-15  3.7471E-14 -1.0598E-14 -5.6738E-17 -1.6278E-14
 -3.5694E-15  5.7680E-15 -1.0598E-14  7.7201E-15  1.4958E-15  2.1754E-14
  5.6053E-14  1.7065E-14 -5.6738E-17  1.4958E-15  7.7155E-14  4.7045E-14
 -1.0531E-13  1.7329E-13 -1.6278E-14  2.1754E-14  4.7045E-14  6.5307E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.578432   16.549834    0.932057   -0.018250   -0.405909  2456507.024878
# Heliocentric elements and errors
Epoch:              2456506.5000  =  2013/08/02
Mean Anomaly:          345.31962 +/-     0.006
Argument of Peri:      359.71932 +/-     0.009
Long of Asc Node:       36.74343 +/-     0.000
Inclination:             6.81609 +/-     0.000
Eccentricity:         0.18778810 +/-    0.0000
Semi-Major Axis:     39.63898735 +/-    0.0018
Time of Perihelion: 2460223.7087 +/-       6.1
Perihelion:          32.19525720 +/-    0.0019
Aphelion:            47.08271749 +/-    0.0024
Period (y)              249.5698 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           31.43198927 +/-    0.0003
Ecliptic Y            8.37114556 +/-    0.0001
Ecliptic Z           -1.44576596 +/-    0.0000
Ecliptic XDOT        -0.00100663 +/-    0.0000
Ecliptic YDOT         0.00309234 +/-    0.0000
Ecliptic ZDOT         0.00036816 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   32.55976951 +/-    0.0003
Geocenter to KBO     32.13994452 +/-    0.0003
# Hcoef:  8.98

The following table shows the complete astrometric record for 13UJ17. 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 (13UJ17) followed by the observatory code and reference code for the source of the astrometry.

2013 08  02.52410  01 04 58.130  +04 07 26.78  24.6r 13UJ17    568  C~2NKY      
2013 08  02.56680  01 04 58.071  +04 07 26.31  24.5r 13UJ17    568  C~2NKY      
2013 08  30.43961  01 03 40.472  +03 58 39.72  24.4r 13UJ17    568  C~2NKY      
2013 08  31.44379  01 03 36.386  +03 58 13.72  23.1r 13UJ17    568  C~2NKY      
2013 08  31.48677  01 03 36.187  +03 58 12.39  24.7r 13UJ17    568  C~2NKY      
2013 08  31.49523  01 03 36.159  +03 58 12.14  24.2r 13UJ17    568  C~2NKY      
2013 08  31.50005  01 03 36.155  +03 58 12.35  24.0r 13UJ17    568  C~2NKY      
2013 08  31.50475  01 03 36.119  +03 58 11.96  24.0r 13UJ17    568  C~2NKY      
2013 09  04.42370  01 03 19.440  +03 56 25.99  24.5r 13UJ17    568  C~2NKY      
2013 10  06.39317  01 00 32.793  +03 39 39.99  24.1r 13UJ17    568  C~2NKY      
2013 10  06.45289  01 00 32.447  +03 39 38.33  23.9r 13UJ17    568  C~2NKY      
2013 10  06.46664  01 00 32.385  +03 39 37.71  23.5r 13UJ17    568  C~2NKY      
2013 10  06.47596  01 00 32.315  +03 39 37.48  24.2r 13UJ17    568  C~2NKY      
2013 10  09.51669  01 00 14.998  +03 37 57.36  23.7r 13UJ17    568  C~2NKY      
2013 10  31.23488  00 58 15.114  +03 26 50.33  23.8r 13UJ17    568  C~2NKY      
2013 10  31.27795  00 58 14.878  +03 26 48.99  24.5r 13UJ17    568  C~2NKY      
2013 10  31.32073  00 58 14.675  +03 26 47.87  23.9r 13UJ17    568  C~2NKY      
2013 11  01.26121  00 58 09.818  +03 26 22.19  23.9r 13UJ17    568  C~2NKY      
2013 11  01.38296  00 58 09.170  +03 26 18.81  24.0r 13UJ17    568  C~2NKY      
2013 11  05.38795  00 57 49.097  +03 24 33.31  23.9r 13UJ17    568  C~2NKY      
2013 11  29.22393  00 56 12.807  +03 16 54.76  24.8r 13UJ17    568  C~2NKY      
2013 12  04.25107  00 55 58.886  +03 16 02.20  24.0r 13UJ17    568  C~2NKY      
2013 12  04.29848  00 55 58.760  +03 16 01.85  23.2r 13UJ17    568  C~2NKY      
2013 12  05.24921  00 55 56.427  +03 15 53.85  24.1r 13UJ17    568  C~2NKY      
2014 06  27.59782  01 11 58.437  +05 07 18.62  24.2r 13UJ17    568  C~2NKY      
2014 06  28.60286  01 12 01.215  +05 07 33.36  24.1r 13UJ17    568  C~2NKZ      
2014 07  24.55698  01 12 34.329  +05 10 00.21  24.2r 13UJ17    568  C~2NKZ      
2014 07  27.58768  01 12 33.301  +05 09 47.70  23.9r 13UJ17    568  C~2NKZ      
2014 08  22.55650  01 11 44.296  +05 04 05.98  24.0r 13UJ17    568  C~2NKZ      
2014 08  22.56426  01 11 44.271  +05 04 06.07  24.3r 13UJ17    568  C~2NKZ      
2014 08  28.41844  01 11 24.090  +05 01 57.13  23.9r 13UJ17    568  C~2NKZ      
2014 08  28.42620  01 11 24.072  +05 01 56.82  23.9r 13UJ17    568  C~2NKZ      
2014 10  23.36016  01 06 35.187  +04 33 39.98  24.4r 13UJ17    568  C~2NKZ      
2014 10  23.36792  01 06 35.144  +04 33 39.87  24.5r 13UJ17    568  C~2NKZ      
2014 10  26.45694  01 06 18.041  +04 32 06.38  24.2r 13UJ17    568  C~2NKZ      
2014 10  27.39884  01 06 12.878  +04 31 38.08  24.0r 13UJ17    568  C~2NKZ      
2014 10  27.40661  01 06 12.836  +04 31 37.84  24.0r 13UJ17    568  C~2NKZ      
2014 11  24.23611  01 04 01.909  +04 20 31.30  24.3r 13UJ17    568  C~2NKZ      
2014 11  24.24000  01 04 01.892  +04 20 31.22  24.1r 13UJ17    568  C~2NKZ      
2014 11  25.23226  01 03 58.264  +04 20 14.70  24.8r 13UJ17    568  C~2NKZ      
2014 11  25.23617  01 03 58.265  +04 20 14.62  24.2r 13UJ17    568  C~2NKZ      
2014 12  17.25877  01 03 02.574  +04 16 55.59  23.4r 13UJ17    568  C~2NKZ      
2015 01  17.24366  01 03 17.158  +04 22 06.01  24.0r 13UJ17    568  C~2NKZ      
2015 01  17.29797  01 03 17.284  +04 22 07.16  24.1r 13UJ17    568  C~2NKZ      
2015 08  20.51066  01 19 27.076  +06 06 46.58  23.8r 13UJ17    568  C~2NKZ      
2015 10  15.30155  01 15 02.229  +05 40 51.36  23.7r 13UJ17    568  C~2NKZ      
2015 10  15.30564  01 15 02.216  +05 40 51.18  23.8r 13UJ17    568  C~2NKZ      
2015 10  15.31052  01 15 02.185  +05 40 51.06  24.4g 13UJ17    568  C~2NKZ      
2015 10  15.31463  01 15 02.161  +05 40 50.84  24.3g 13UJ17    568  C~2NKZ      
2015 10  15.31874  01 15 02.144  +05 40 50.81  24.5g 13UJ17    568  C~2NKZ      
2015 10  15.32284  01 15 02.110  +05 40 50.64  24.4g 13UJ17    568  C~2NKZ      
2015 10  15.32694  01 15 02.092  +05 40 50.59  24.2g 13UJ17    568  C~2NKZ      
2015 10  15.33109  01 15 02.064  +05 40 50.36  24.3g 13UJ17    568  C~2NKZ      
2015 10  15.33519  01 15 02.032  +05 40 50.35  24.4g 13UJ17    568  C~2NKZ      
2015 10  15.33938  01 15 02.016  +05 40 50.12  24.4g 13UJ17    568  C~2NKZ      
2015 10  15.34352  01 15 01.996  +05 40 49.99  24.5g 13UJ17    568  C~2NKZ      
2015 10  15.34761  01 15 01.970  +05 40 49.89  24.3g 13UJ17    568  C~2NKZ      
2015 10  15.35250  01 15 01.940  +05 40 49.72  23.7r 13UJ17    568  C~2NKZ      
2015 10  15.35660  01 15 01.916  +05 40 49.57  23.8r 13UJ17    568  C~2NKZ      
2015 12  07.37779  01 10 54.219  +05 19 49.85  24.6w 13UJ17    568  C~2NKZ      
2021 11  05.233960 02 00 08.199  +11 40 12.19  24.1G 13UJ17    G37  C~5BQw      
2021 11  05.288840 02 00 07.880  +11 40 10.49        13UJ17    G37  C~5BQw      
2021 11  05.344140 02 00 07.547  +11 40 09.02        13UJ17    G37  C~5BQw      

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    -0.03       0.00    -0.01
     2   0.0001      0.00     0.04       0.00    -0.02
     3   0.0764      0.00     0.06       0.00     0.04
     4   0.0792      0.00     0.09       0.00     0.16
     5   0.0793      0.00    -0.18       0.00    -0.04
     6   0.0793      0.00    -0.07       0.00    -0.07
     7   0.0793      0.00     0.18       0.00     0.27
     8   0.0793      0.00    -0.06       0.00     0.00
     9   0.0901      0.00     0.08       0.00    -0.09
    10   0.1776      0.00    -0.15       0.00    -0.18
    11   0.1778      0.00    -0.15       0.00     0.13
    12   0.1778      0.00     0.12       0.00    -0.03
    13   0.1778      0.00    -0.12       0.00     0.04
    14   0.1862      0.00    -0.07       0.00    -0.03
    15   0.2456      0.00     0.04       0.00    -0.02
    16   0.2457      0.00    -0.10       0.00    -0.18
    17   0.2458      0.00     0.24       0.00    -0.12
    18   0.2484      0.00    -0.02       0.00    -0.02
    19   0.2488      0.00    -0.19       0.00    -0.09
    20   0.2597      0.00     0.17       0.00    -0.04
    21   0.3250      0.00    -0.02       0.00     0.06
    22   0.3387      0.00     0.07       0.00    -0.07
    23   0.3389      0.00     0.04       0.00    -0.00
    24   0.3415      0.00     0.02       0.00    -0.07
    25   0.9010      0.00    -0.05       0.00     0.06
    26   0.9037      0.00     0.12       0.00    -0.06
    27   0.9748      0.00     0.07       0.00     0.05
    28   0.9831      0.00     0.08       0.00     0.05
    29   1.0542      0.00    -0.07       0.00    -0.08
    30   1.0542      0.00    -0.06       0.00     0.17
    31   1.0702      0.00    -0.06       0.00     0.05
    32   1.0702      0.00     0.11       0.00    -0.08
    33   1.2234      0.00    -0.06       0.00     0.06
    34   1.2234      0.00    -0.04       0.00     0.19
    35   1.2318      0.00     0.12       0.00     0.23
    36   1.2344      0.00    -0.09       0.00    -0.07
    37   1.2344      0.00    -0.07       0.00    -0.08
    38   1.3106      0.00     0.01       0.00     0.02
    39   1.3107      0.00    -0.02       0.00     0.00
    40   1.3134      0.00     0.08       0.00    -0.05
    41   1.3134      0.00     0.31       0.00    -0.07
    42   1.3737      0.00    -0.05       0.00     0.31
    43   1.4585      0.00    -0.04       0.00    -0.08
    44   1.4587      0.00     0.04       0.00    -0.08
    45   2.0479      0.00     0.00       0.00    -0.04
    46   2.2006      0.00    -0.14       0.00     0.02
    47   2.2006      0.00     0.02       0.00    -0.03
    48   2.2006      0.00    -0.02       0.00     0.00
    49   2.2007      0.00    -0.02       0.00    -0.09
    50   2.2007      0.00     0.09       0.00     0.02
    51   2.2007      0.00    -0.06       0.00    -0.02
    52   2.2007      0.00     0.03       0.00     0.06
    53   2.2007      0.00    -0.03       0.00    -0.04
    54   2.2007      0.00    -0.15       0.00     0.08
    55   2.2007      0.00    -0.02       0.00    -0.01
    56   2.2007      0.00     0.05       0.00    -0.01
    57   2.2007      0.00     0.02       0.00     0.02
    58   2.2008      0.00    -0.00       0.00     0.01
    59   2.2008      0.00    -0.00       0.00    -0.01
    60   2.3459      0.00     0.10       0.00    -0.03
    61   8.2593      0.00    -0.05       0.00     0.04
    62   8.2595      0.00     0.06       0.00    -0.09
    63   8.2596      0.00    -0.00       0.00     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.

13UJ17    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.844    39.843    39.844
ecceobj         0.191     0.191     0.191
incobj          6.807     6.807     6.807
qmin           31.750    31.800    31.803
qmax           47.971    47.833    47.854
amean          39.457    39.457    39.458
amin           38.912    38.912    38.921
amax           40.056    40.051    40.055
emean           0.179     0.177     0.177
emin            0.159     0.157     0.156
emax            0.198     0.196     0.196
imean           5.838     5.994     5.989
imin            5.145     5.150     5.200
imax            6.623     7.191     7.202
excite_mean     0.206     0.206     0.206
fracstop        1.000     1.000     1.000
cjmean          3.004     3.004     3.004

libcent 0       179.7     181.6     179.9
libamp  0       129.7     132.0     127.9
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       199.9     197.4     193.4
kozaiamp        180.0     180.0     180.0