Orbit Fit and Astrometric record for 15FK345

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: 15FK345   
# Created Sat Dec  4 02:13:18 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     70 observations of     70
# Arc:   4.40y
# First observation: 2012/02/03
#  Last observation: 2016/06/28
# Chi-squared of fit:    87.49 DOF:    134 RMS:  0.20
# Min/Max residuals:    -0.84    0.54
# Exact a, adot, b, bdot, g, gdot:
  4.413819E-05  5.051604E-01  1.490987E-06  2.174608E-02  1.810800E-01 -5.251008E-02
# Covariance matrix:
  2.6180E-13 -3.2125E-14  3.1818E-16  1.2141E-15  4.0039E-14  8.3970E-15
 -3.2125E-14  6.7809E-14  4.1522E-16  1.7340E-15  4.8801E-14  1.2211E-14
  3.1818E-16  4.1522E-16  2.3507E-13 -6.6656E-14  4.7075E-16  1.0262E-16
  1.2141E-15  1.7340E-15 -6.6656E-14  2.1181E-14  1.5821E-15  4.9063E-16
  4.0039E-14  4.8801E-14  4.7075E-16  1.5821E-15  6.4176E-14  1.0630E-14
  8.3970E-15  1.2211E-14  1.0262E-16  4.9063E-16  1.0630E-14  3.5379E-15
#      lat0       lon0       xBary       yBary       zBary        JD0
   -5.337014  137.261347    0.054192   -0.091627   -0.980948  2455961.036396
# Heliocentric elements and errors
Epoch:              2455960.5000  =  2012/02/03
Mean Anomaly:          346.52042 +/-     0.000
Argument of Peri:      325.81025 +/-     0.000
Long of Asc Node:      197.67598 +/-     0.000
Inclination:             5.18057 +/-     0.001
Eccentricity:         0.31613361 +/-    0.0000
Semi-Major Axis:      9.26329874 +/-    0.0000
Time of Perihelion: 2456346.0855 +/-       0.0
Perihelion:           6.33485866 +/-    0.0000
Aphelion:            12.19173883 +/-    0.0000
Period (y)               28.1940 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           -4.72229091 +/-    0.0000
Ecliptic Y            4.44130183 +/-    0.0000
Ecliptic Z           -0.51366118 +/-    0.0000
Ecliptic XDOT        -0.00462987 +/-    0.0000
Ecliptic YDOT        -0.00612099 +/-    0.0000
Ecliptic ZDOT         0.00040131 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO    6.50302894 +/-    0.0000
Geocenter to KBO      5.52248029 +/-    0.0000
# Hcoef: 14.00

The following table shows the complete astrometric record for 15FK345. 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 (15FK345) followed by the observatory code and reference code for the source of the astrometry.

2012 02  03.53563  09 12 15.464  +10 34 13.70  21.6i 15FK345   F51  C~1vYV      
2012 02  03.54852  09 12 15.152  +10 34 15.09  21.5i 15FK345   F51  C~1vYV      
2012 02  03.58203  09 12 14.349  +10 34 18.89  21.8r 15FK345   F51  C~1vYV      
2013 03  05.42826  10 56 53.007  +03 03 55.66  21.9w 15FK345   F51  C~1vYV      
2013 03  05.44321  10 56 52.678  +03 03 58.33  22.1w 15FK345   F51  C~1vYV      
2013 03  05.45816  10 56 52.329  +03 04 00.64  21.9w 15FK345   F51  C~1vYV      
2013 12  06.641209 12 40 38.866  -05 39 32.75  22.5G 15FK345   F51  C~444T      
2013 12  06.645154 12 40 38.988  -05 39 34.25  22.9G 15FK345   F51  C~444T      
2014 02  26.518043 12 52 11.605  -06 31 59.29  22.1G 15FK345   F51  C~444T      
2014 02  26.530406 12 52 11.437  -06 31 57.78  21.5G 15FK345   F51  C~444T      
2014 04  04.425953 12 40 30.061  -05 02 52.56  22.2G 15FK345   F51  C~444T      
2014 04  04.437296 12 40 29.834  -05 02 50.53  21.4G 15FK345   F51  C~444T      
2014 04  23.349698 12 34 11.655  -04 13 29.75  22.1G 15FK345   F51  C~444T      
2014 04  23.362194 12 34 11.439  -04 13 27.98  22.2G 15FK345   F51  C~444T      
2014 04  23.374662 12 34 11.200  -04 13 26.27  21.8G 15FK345   F51  C~444T      
2014 04  23.387146 12 34 10.978  -04 13 24.04  21.7G 15FK345   F51  C~444T      
2014 04  29.30507  12 32 31.373  -03 59 50.94  22.3w 15FK345   F51  C~1vYV      
2014 04  29.31703  12 32 31.167  -03 59 49.64  22.1w 15FK345   F51  C~1vYV      
2014 04  29.32899  12 32 30.984  -03 59 48.11  22.1w 15FK345   F51  C~1vYV      
2014 04  29.34098  12 32 30.785  -03 59 46.34  22.2w 15FK345   F51  C~1vYV      
2014 05  25.333006 12 28 10.237  -03 19 20.63  22.2G 15FK345   F51  C~444T      
2014 05  25.344421 12 28 10.186  -03 19 20.05  22.7G 15FK345   F51  C~444T      
2014 05  25.355863 12 28 10.137  -03 19 19.33  22.7G 15FK345   F51  C~444T      
2014 05  25.367321 12 28 10.105  -03 19 18.56  22.5G 15FK345   F51  C~444T      
2015 01  20.647899 14 25 50.498  -13 15 51.60  22.9G 15FK345   F51  C~444T      
2015 01  20.653161 14 25 50.594  -13 15 52.33  23.2G 15FK345   F51  C~444T      
2015 01  22.647529 14 26 27.828  -13 17 55.41  23.2G 15FK345   F51  C~444T      
2015 01  22.651683 14 26 27.893  -13 17 55.68  22.3G 15FK345   F51  C~444T      
2015 01  22.659965 14 26 28.046  -13 17 56.16  23.1G 15FK345   F51  C~444T      
2015 03  17.552395 14 29 28.809  -13 03 15.11  22.6G 15FK345   F51  C~444T      
2015 03  17.565460 14 29 28.649  -13 03 14.05  22.4G 15FK345   F51  C~444T      
2015 03  17.578473 14 29 28.498  -13 03 12.76  22.1G 15FK345   F51  C~444T      
2015 03  17.591501 14 29 28.344  -13 03 11.91  22.4G 15FK345   F51  C~444T      
2015 03  18.52586  14 29 17.598  -13 01 48.48  22.4w 15FK345   F51  C~1vYV      
2015 03  18.53866  14 29 17.443  -13 01 47.02  22.4w 15FK345   F51  C~1vYV      
2015 03  18.55137  14 29 17.292  -13 01 46.20  22.6w 15FK345   F51  C~1vYV      
2015 03  19.50741  14 29 05.838  -13 00 19.07  22.5w 15FK345   F51  C~1vYV      
2015 03  19.51998  14 29 05.657  -13 00 18.01  22.5w 15FK345   F51  C~1vYV      
2015 03  19.53677  14 29 05.460  -13 00 16.38  22.4w 15FK345   F51  C~1vYV      
2015 03  19.56265  14 29 05.113  -13 00 13.78  22.4w 15FK345   F51  C~1vYV      
2015 04  23.39143  14 18 31.764  -11 50 55.11  21.9w 15FK345   F51  C~1vYV      
2015 04  23.40393  14 18 31.486  -11 50 53.38  22.3w 15FK345   F51  C~1vYV      
2015 04  23.41644  14 18 31.195  -11 50 51.70  21.9w 15FK345   F51  C~1vYV      
2015 04  23.42893  14 18 30.921  -11 50 50.22  22.0w 15FK345   F51  C~1vYV      
2015 04  24.47712  14 18 08.188  -11 48 30.25  21.8w 15FK345   F51  C~1vYV      
2015 04  24.48926  14 18 07.908  -11 48 28.49  22.0w 15FK345   F51  C~1vYV      
2015 04  24.50138  14 18 07.653  -11 48 27.04  22.2w 15FK345   F51  C~1vYV      
2015 04  24.51348  14 18 07.392  -11 48 25.39  22.3w 15FK345   F51  C~1vYV      
2015 04  25.456256 14 17 46.931  -11 46 19.36  22.1G 15FK345   F51  C~444T      
2015 04  25.468488 14 17 46.687  -11 46 17.83  21.6G 15FK345   F51  C~444T      
2015 04  25.480583 14 17 46.414  -11 46 16.15  22.1G 15FK345   F51  C~444T      
2015 04  25.493103 14 17 46.117  -11 46 14.55  22.0G 15FK345   F51  C~444T      
2015 04  26.417213 14 17 26.111  -11 44 11.32  21.8G 15FK345   F51  C~444T      
2015 04  26.427982 14 17 25.858  -11 44 09.91  21.5G 15FK345   F51  C~444T      
2015 05  22.37561  14 08 43.251  -10 51 27.71  22.2w 15FK345   F51  C~1vYV      
2015 05  22.38890  14 08 43.012  -10 51 26.24  22.4w 15FK345   F51  C~1vYV      
2015 05  22.40215  14 08 42.785  -10 51 24.81  22.5w 15FK345   F51  C~1vYV      
2015 06  10.308433 14 04 26.455  -10 25 52.72  22.7G 15FK345   F51  C~444T      
2015 06  10.322240 14 04 26.278  -10 25 51.73  23.8G 15FK345   F51  C~444T      
2016 03  07.595086 15 55 36.953  -17 08 53.91  23.1G 15FK345   F51  C~444T      
2016 03  17.594253 15 55 45.414  -17 02 43.09  23.7G 15FK345   F51  C~444T      
2016 05  07.456542 15 44 25.145  -15 59 31.44  23.3G 15FK345   F51  C~444T      
2016 05  07.467649 15 44 24.917  -15 59 30.30  21.9G 15FK345   F51  C~444T      
2016 05  07.478738 15 44 24.708  -15 59 29.68  22.9G 15FK345   F51  C~444T      
2016 05  07.489787 15 44 24.375  -15 59 27.90  22.8G 15FK345   F51  C~444T      
2016 05  13.452734 15 42 15.928  -15 50 30.18  22.4G 15FK345   F51  C~444T      
2016 05  13.464499 15 42 15.678  -15 50 29.30  22.3G 15FK345   F51  C~444T      
2016 06  28.356098 15 28 07.555  -14 58 42.36  22.6G 15FK345   F51  C~444T      
2016 06  28.367471 15 28 07.402  -14 58 42.29  21.5G 15FK345   F51  C~444T      
2016 06  28.390299 15 28 07.154  -14 58 41.29  22.6G 15FK345   F51  C~444T      

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     0.02       0.00     0.08
     2   0.0000      0.00    -0.02       0.00    -0.02
     3   0.0001      0.00    -0.03       0.00    -0.08
     4   1.0839      0.00     0.04       0.00    -0.11
     5   1.0839      0.00     0.20       0.00     0.14
     6   1.0840      0.00     0.06       0.00     0.04
     7   1.8401      0.00    -0.19       0.00     0.44
     8   1.8401      0.00    -0.05       0.00    -0.38
     9   2.0643      0.00    -0.03       0.00    -0.10
    10   2.0643      0.00     0.07       0.00     0.11
    11   2.1653      0.00    -0.35       0.00    -0.32
    12   2.1654      0.00    -0.01       0.00    -0.15
    13   2.2172      0.00    -0.18       0.00    -0.19
    14   2.2172      0.00     0.03       0.00    -0.22
    15   2.2172      0.00    -0.10       0.00    -0.30
    16   2.2173      0.00     0.02       0.00     0.14
    17   2.2335      0.00    -0.01       0.00     0.23
    18   2.2335      0.00    -0.16       0.00    -0.03
    19   2.2335      0.00     0.03       0.00    -0.07
    20   2.2336      0.00    -0.01       0.00     0.14
    21   2.3047      0.00    -0.03       0.00    -0.18
    22   2.3047      0.00    -0.08       0.00    -0.19
    23   2.3048      0.00    -0.10       0.00    -0.06
    24   2.3048      0.00     0.13       0.00     0.12
    25   2.9627      0.00     0.02       0.00     0.34
    26   2.9627      0.00    -0.01       0.00    -0.04
    27   2.9681      0.00     0.10       0.00    -0.00
    28   2.9681      0.00    -0.03       0.00    -0.02
    29   2.9682      0.00     0.07       0.00    -0.01
    30   3.1157      0.00    -0.05       0.00     0.12
    31   3.1158      0.00    -0.12       0.00     0.03
    32   3.1158      0.00    -0.07       0.00     0.17
    33   3.1158      0.00    -0.06       0.00    -0.13
    34   3.1184      0.00     0.08       0.00     0.12
    35   3.1184      0.00     0.12       0.00     0.43
    36   3.1185      0.00     0.21       0.00     0.10
    37   3.1211      0.00     0.26       0.00     0.03
    38   3.1211      0.00    -0.04       0.00    -0.07
    39   3.1212      0.00     0.23       0.00     0.02
    40   3.1212      0.00     0.01       0.00     0.23
    41   3.2166      0.00     0.23       0.00     0.06
    42   3.2166      0.00     0.22       0.00     0.13
    43   3.2166      0.00     0.03       0.00     0.14
    44   3.2167      0.00     0.09       0.00    -0.05
    45   3.2196      0.00     0.18       0.00    -0.14
    46   3.2196      0.00     0.03       0.00    -0.00
    47   3.2196      0.00     0.25       0.00    -0.18
    48   3.2197      0.00     0.37       0.00    -0.15
    49   3.2222      0.00    -0.30       0.00     0.04
    50   3.2223      0.00     0.13       0.00    -0.07
    51   3.2223      0.00     0.07       0.00    -0.01
    52   3.2223      0.00    -0.20       0.00    -0.09
    53   3.2249      0.00    -0.19       0.00    -0.05
    54   3.2249      0.00    -0.39       0.00    -0.08
    55   3.2959      0.00     0.19       0.00     0.03
    56   3.2960      0.00     0.14       0.00     0.13
    57   3.2960      0.00     0.26       0.00     0.19
    58   3.3478      0.00    -0.15       0.00     0.29
    59   3.3478      0.00    -0.72       0.00     0.49
    60   4.0905      0.00    -0.01       0.00    -0.12
    61   4.1179      0.00    -0.07       0.00    -0.18
    62   4.2571      0.00    -0.16       0.00    -0.11
    63   4.2572      0.00     0.05       0.00     0.02
    64   4.2572      0.00     0.54       0.00    -0.36
    65   4.2572      0.00    -0.84       0.00     0.41
    66   4.2736      0.00    -0.16       0.00     0.03
    67   4.2736      0.00     0.02       0.00    -0.14
    68   4.3992      0.00     0.08       0.00    -0.05
    69   4.3993      0.00    -0.16       0.00    -0.36
    70   4.3993      0.00     0.24       0.00    -0.14

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.

15FK345    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj         9.268     9.268     9.268
ecceobj         0.312     0.312     0.312
incobj          5.168     5.168     5.168
qmin            6.381     6.381     6.381
qmax           13.096    14.288    13.096
amean           9.607    10.087     9.601
amin            9.268     9.268     9.268
amax            9.867    11.070     9.845
emean           0.303     0.291     0.303
emin            0.273     0.267     0.273
emax            0.331     0.331     0.331
imean           5.999     7.787     5.994
imin            5.083     5.083     5.083
imax            8.082    10.845     8.062
excite_mean     0.321     0.324     0.321
fracstop        0.000     0.001     0.000
cjmean          4.208     4.091     4.210

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       112.7      99.6     112.3
kozaiamp        158.0     158.0     158.1