Orbit Fit and Astrometric record for 13NK24

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: 13NK24    
# Created Sat Dec  4 02:11:45 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     75 observations of     75
# Arc:   8.96y
# First observation: 2011/08/01
#  Last observation: 2020/07/18
# Chi-squared of fit:    78.50 DOF:    144 RMS:  0.18
# Min/Max residuals:    -0.52    0.70
# Exact a, adot, b, bdot, g, gdot:
  1.703271E-05  2.937567E-02  8.683727E-06  1.370097E-02  2.881837E-02  3.282117E-04
# Covariance matrix:
  3.9216E-13 -1.6254E-13  1.2316E-13 -6.3016E-14 -1.0788E-13 -4.8316E-13
 -1.6254E-13  7.5331E-14 -6.1661E-14  3.1575E-14  4.9129E-14  2.4205E-13
  1.2316E-13 -6.1661E-14  1.7006E-13 -5.2649E-14 -4.1529E-14 -2.1646E-13
 -6.3016E-14  3.1575E-14 -5.2649E-14  2.0763E-14  2.0707E-14  1.1091E-13
 -1.0788E-13  4.9129E-14 -4.1529E-14  2.0707E-14  1.4143E-13  1.5970E-13
 -4.8316E-13  2.4205E-13 -2.1646E-13  1.1091E-13  1.5970E-13  8.5014E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
  -10.129830  -60.261684   -0.154104   -0.176178   -0.985743  2455774.918646
# Heliocentric elements and errors
Epoch:              2455774.5000  =  2011/08/01
Mean Anomaly:            4.79475 +/-     0.009
Argument of Peri:      331.21688 +/-     0.013
Long of Asc Node:      320.11112 +/-     0.000
Inclination:            26.77857 +/-     0.000
Eccentricity:         0.14426084 +/-    0.0000
Semi-Major Axis:     41.67073958 +/-    0.0024
Time of Perihelion: 2454465.8941 +/-       2.6
Perihelion:          35.65928387 +/-    0.0026
Aphelion:            47.68219530 +/-    0.0032
Period (y)              269.0017 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           17.57915290 +/-    0.0002
Ecliptic Y          -30.45266192 +/-    0.0004
Ecliptic Z           -6.10268018 +/-    0.0001
Ecliptic XDOT         0.00254914 +/-    0.0000
Ecliptic YDOT         0.00116447 +/-    0.0000
Ecliptic ZDOT         0.00127592 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.68799960 +/-    0.0003
Geocenter to KBO     34.70011827 +/-    0.0005
# Hcoef:  6.69

The following table shows the complete astrometric record for 13NK24. 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 (13NK24) followed by the observatory code and reference code for the source of the astrometry.

2011 08  01.41788  20 17 25.979  -30 05 26.91  21.4G 13NK24    F51  C~2r7P      
2011 10  18.25037  20 12 31.681  -29 54 07.78  22.3G 13NK24    F51  C~2r7P      
2012 06  11.60699  20 28 51.622  -28 43 11.29  22.9G 13NK24    F51  C~2r7P      
2013 06  30.50117  20 33 45.874  -27 37 37.07  22.4G 13NK24    F51  C~2r7P      
2013 07  13.45704  20 32 31.087  -27 41 11.67  22.0w 13NK24    F51  C~1vX0      
2013 07  13.47156  20 32 31.005  -27 41 12.07  22.1w 13NK24    F51  C~1vX0      
2013 07  13.48865  20 32 30.900  -27 41 12.11  22.4w 13NK24    F51  C~1vX0      
2013 07  13.50507  20 32 30.799  -27 41 12.40  21.9w 13NK24    F51  C~1vX0      
2013 07  18.46524  20 32 00.434  -27 42 28.55  22.5G 13NK24    F51  C~2r7P      
2013 08  02.40153  20 30 26.844  -27 45 43.12  22.0w 13NK24    F51  C~1vX0      
2013 08  02.41517  20 30 26.764  -27 45 43.31  22.1w 13NK24    F51  C~1vX0      
2013 08  02.42882  20 30 26.675  -27 45 43.48  22.1w 13NK24    F51  C~1vX0      
2013 08  02.44249  20 30 26.587  -27 45 43.59  22.1w 13NK24    F51  C~1vX0      
2014 06  04.55711  20 41 55.317  -26 18 40.15  22.0w 13NK24    F51  C~1vX0      
2014 06  04.56812  20 41 55.252  -26 18 40.40  22.0w 13NK24    F51  C~1vX0      
2014 06  04.57911  20 41 55.225  -26 18 40.57  22.0w 13NK24    F51  C~1vX0      
2014 06  04.59009  20 41 55.200  -26 18 40.28  22.1w 13NK24    F51  C~1vX0      
2014 06  30.47465  20 40 04.684  -26 25 39.03  23.0G 13NK24    F51  C~2r7P      
2014 06  30.48631  20 40 04.601  -26 25 39.04  22.8G 13NK24    F51  C~2r7P      
2014 06  30.49798  20 40 04.526  -26 25 38.97  22.0G 13NK24    F51  C~2r7P      
2014 07  27.42753  20 37 26.599  -26 32 49.78  21.5G 13NK24    F51  C~2r7P      
2014 07  27.43945  20 37 26.527  -26 32 49.97  22.0G 13NK24    F51  C~2r7P      
2014 07  27.45135  20 37 26.451  -26 32 50.28  21.9G 13NK24    F51  C~2r7P      
2014 07  27.46325  20 37 26.386  -26 32 50.42  21.4G 13NK24    F51  C~2r7P      
2014 07  29.41230  20 37 14.272  -26 33 16.89  21.5G 13NK24    F51  C~2r7P      
2014 07  29.42355  20 37 14.188  -26 33 16.83  22.2G 13NK24    F51  C~2r7P      
2014 07  29.43480  20 37 14.119  -26 33 17.04  22.1G 13NK24    F51  C~2r7P      
2014 07  29.44605  20 37 14.036  -26 33 17.45  22.1G 13NK24    F51  C~2r7P      
2014 07  30.43373  20 37 07.904  -26 33 30.36  22.3G 13NK24    F51  C~2r7P      
2014 07  30.44516  20 37 07.830  -26 33 30.48  22.1G 13NK24    F51  C~2r7P      
2014 07  30.45656  20 37 07.765  -26 33 30.65  22.1G 13NK24    F51  C~2r7P      
2014 07  30.46798  20 37 07.676  -26 33 30.77  22.0G 13NK24    F51  C~2r7P      
2014 07  31.42419  20 37 01.738  -26 33 43.17  22.1G 13NK24    F51  C~2r7P      
2014 07  31.43543  20 37 01.663  -26 33 43.25  22.2G 13NK24    F51  C~2r7P      
2014 08  22.38226  20 34 49.592  -26 37 10.18  22.2w 13NK24    F51  C~1vX0      
2014 08  22.39373  20 34 49.522  -26 37 10.01  22.1w 13NK24    F51  C~1vX0      
2014 08  22.40520  20 34 49.456  -26 37 10.04  22.2w 13NK24    F51  C~1vX0      
2014 08  22.41664  20 34 49.390  -26 37 10.33  22.1w 13NK24    F51  C~1vX0      
2014 08  23.39657  20 34 43.894  -26 37 15.46  22.3G 13NK24    F51  C~2r7P      
2014 08  23.40735  20 34 43.829  -26 37 15.24  22.0G 13NK24    F51  C~2r7P      
2014 08  23.41814  20 34 43.768  -26 37 15.68  22.6G 13NK24    F51  C~2r7P      
2014 08  23.42892  20 34 43.702  -26 37 15.86  23.0G 13NK24    F51  C~2r7P      
2014 09  28.26507  20 32 11.032  -26 35 35.09  22.2G 13NK24    F51  C~2r7P      
2014 09  28.27740  20 32 10.992  -26 35 34.74  22.3G 13NK24    F51  C~2r7P      
2014 09  28.28998  20 32 10.951  -26 35 34.64  22.7G 13NK24    F51  C~2r7P      
2014 10  08.26834  20 31 50.799  -26 33 19.67  20.0G 13NK24    F51  C~2r7P      
2015 07  24.44135  20 43 58.500  -25 19 26.59  22.3w 13NK24    F51  C~1vX0      
2015 07  24.45165  20 43 58.436  -25 19 26.92  22.2w 13NK24    F51  C~1vX0      
2015 07  24.46197  20 43 58.377  -25 19 26.98  22.3w 13NK24    F51  C~1vX0      
2015 07  24.47230  20 43 58.293  -25 19 27.18  22.3w 13NK24    F51  C~1vX0      
2016 07  04.49819  20 51 51.269  -24 00 39.82  21.5G 13NK24    F51  C~2r7P      
2016 07  04.50889  20 51 51.208  -24 00 39.83  20.2G 13NK24    F51  C~2r7P      
2016 07  04.51960  20 51 51.141  -24 00 39.78  21.7G 13NK24    F51  C~2r7P      
2016 07  04.53032  20 51 51.092  -24 00 40.10  22.0G 13NK24    F51  C~2r7P      
2016 07  31.42683  20 49 15.738  -24 08 00.38  22.5G 13NK24    F51  C~2r7P      
2016 07  31.43717  20 49 15.684  -24 08 00.51  22.4G 13NK24    F51  C~2r7P      
2016 08  07.39678  20 48 33.416  -24 09 38.58  22.1G 13NK24    F51  C~2r7P      
2016 08  07.40774  20 48 33.347  -24 09 38.64  22.1G 13NK24    F51  C~2r7P      
2016 08  07.41871  20 48 33.265  -24 09 38.83  22.2G 13NK24    F51  C~2r7P      
2016 08  07.42969  20 48 33.214  -24 09 38.79  22.0G 13NK24    F51  C~2r7P      
2016 09  27.25342  20 44 25.677  -24 13 21.51  23.0G 13NK24    F51  C~2r7P      
2017 06  24.51128  20 58 34.050  -22 43 43.73  22.6G 13NK24    F51  C~2r7P      
2017 06  24.52230  20 58 33.996  -22 43 43.71  22.3G 13NK24    F51  C~2r7P      
2017 06  24.54434  20 58 33.892  -22 43 43.95  22.0G 13NK24    F51  C~2r7P      
2017 08  01.43455  20 55 08.405  -22 54 09.02  22.1G 13NK24    F51  C~2r7P      
2017 08  01.44451  20 55 08.351  -22 54 09.10  22.3G 13NK24    F51  C~2r7P      
2017 08  01.45445  20 55 08.279  -22 54 09.05  22.5G 13NK24    F51  C~2r7P      
2017 08  01.46446  20 55 08.211  -22 54 09.15  22.3G 13NK24    F51  C~2r7P      
2017 10  08.22753  20 49 55.024  -22 59 44.36  21.8G 13NK24    F51  C~2r7P      
2017 10  08.23917  20 49 55.009  -22 59 43.97  22.4G 13NK24    F51  C~2r7P      
2017 10  08.25080  20 49 54.969  -22 59 43.74  23.0G 13NK24    F51  C~2r7P      
2017 10  08.26244  20 49 54.937  -22 59 43.66  21.9G 13NK24    F51  C~2r7P      
2020 07  18.45784  21 13 37.816  -19 04 28.97  22.1w 13NK24    F51  C~3zlh      
2020 07  18.46862  21 13 37.756  -19 04 29.11  22.2w 13NK24    F51  C~3zlh      
2020 07  18.49007  21 13 37.626  -19 04 29.47  22.2w 13NK24    F51  C~3zlh      

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    -0.15       0.00    -0.28
     2   0.2131      0.00    -0.07       0.00     0.63
     3   0.8629      0.00    -0.24       0.00     0.14
     4   1.9140      0.00     0.07       0.00    -0.12
     5   1.9495      0.00    -0.15       0.00     0.01
     6   1.9495      0.00    -0.04       0.00    -0.16
     7   1.9495      0.00    -0.03       0.00     0.07
     8   1.9496      0.00    -0.03       0.00     0.04
     9   1.9632      0.00    -0.26       0.00    -0.17
    10   2.0041      0.00    -0.14       0.00     0.03
    11   2.0041      0.00    -0.03       0.00    -0.01
    12   2.0041      0.00    -0.06       0.00    -0.03
    13   2.0042      0.00    -0.07       0.00     0.01
    14   2.8423      0.00     0.19       0.00     0.11
    15   2.8423      0.00    -0.25       0.00     0.02
    16   2.8423      0.00    -0.13       0.00     0.01
    17   2.8424      0.00     0.03       0.00     0.45
    18   2.9132      0.00     0.46       0.00    -0.38
    19   2.9133      0.00     0.16       0.00    -0.19
    20   2.9133      0.00    -0.03       0.00     0.08
    21   2.9870      0.00    -0.05       0.00    -0.08
    22   2.9871      0.00     0.00       0.00    -0.10
    23   2.9871      0.00    -0.01       0.00    -0.24
    24   2.9871      0.00     0.14       0.00    -0.22
    25   2.9925      0.00     0.22       0.00    -0.16
    26   2.9925      0.00     0.03       0.00     0.06
    27   2.9925      0.00     0.07       0.00    -0.00
    28   2.9925      0.00    -0.11       0.00    -0.26
    29   2.9953      0.00     0.11       0.00    -0.09
    30   2.9953      0.00     0.09       0.00    -0.07
    31   2.9953      0.00     0.20       0.00    -0.09
    32   2.9953      0.00    -0.05       0.00    -0.06
    33   2.9980      0.00     0.08       0.00    -0.04
    34   2.9980      0.00     0.02       0.00     0.02
    35   3.0581      0.00    -0.02       0.00    -0.10
    36   3.0581      0.00    -0.08       0.00     0.13
    37   3.0581      0.00    -0.08       0.00     0.16
    38   3.0582      0.00    -0.08       0.00    -0.07
    39   3.0609      0.00     0.02       0.00     0.00
    40   3.0609      0.00    -0.03       0.00     0.28
    41   3.0609      0.00    -0.03       0.00    -0.11
    42   3.0609      0.00    -0.10       0.00    -0.24
    43   3.1591      0.00     0.34       0.00     0.01
    44   3.1591      0.00     0.24       0.00     0.22
    45   3.1591      0.00     0.14       0.00     0.18
    46   3.1864      0.00     0.68       0.00     0.70
    47   3.9782      0.00     0.09       0.00     0.03
    48   3.9782      0.00     0.09       0.00    -0.14
    49   3.9782      0.00     0.16       0.00    -0.04
    50   3.9782      0.00    -0.14       0.00    -0.08
    51   4.9256      0.00     0.03       0.00    -0.16
    52   4.9256      0.00    -0.03       0.00     0.01
    53   4.9257      0.00    -0.17       0.00     0.24
    54   4.9257      0.00    -0.05       0.00     0.11
    55   4.9993      0.00     0.04       0.00     0.03
    56   4.9994      0.00     0.19       0.00     0.05
    57   5.0184      0.00     0.07       0.00    -0.07
    58   5.0185      0.00     0.05       0.00     0.02
    59   5.0185      0.00    -0.17       0.00    -0.03
    60   5.0185      0.00     0.08       0.00     0.16
    61   5.1577      0.00     0.09       0.00     0.10
    62   5.8976      0.00     0.18       0.00     0.10
    63   5.8976      0.00     0.11       0.00     0.30
    64   5.8977      0.00     0.03       0.00     0.39
    65   6.0014      0.00    -0.10       0.00    -0.20
    66   6.0014      0.00    -0.00       0.00    -0.13
    67   6.0015      0.00    -0.17       0.00     0.08
    68   6.0015      0.00    -0.27       0.00     0.13
    69   6.1870      0.00    -0.12       0.00    -0.52
    70   6.1871      0.00     0.01       0.00    -0.24
    71   6.1871      0.00    -0.24       0.00    -0.12
    72   6.1871      0.00    -0.37       0.00    -0.14
    73   8.9638      0.00     0.08       0.00     0.03
    74   8.9639      0.00     0.07       0.00     0.07
    75   8.9639      0.00    -0.11       0.00     0.08

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.

13NK24    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.510    41.510    41.510
ecceobj         0.142     0.142     0.142
incobj         26.786    26.786    26.786
qmin           34.509    34.439    34.526
qmax           49.121    49.166    49.021
amean          41.616    41.618    41.620
amin           41.218    41.244    41.243
amax           42.016    42.036    42.027
emean           0.147     0.148     0.147
emin            0.129     0.128     0.129
emax            0.169     0.170     0.168
imean          27.943    27.937    27.954
imin           27.386    27.356    27.414
imax           28.414    28.413    28.414
excite_mean     0.491     0.491     0.491
fracstop        1.000     1.000     1.000
cjmean          2.778     2.778     2.778

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       181.4     172.8     180.4
kozaiamp        180.0     180.0     180.0