Orbit Fit and Astrometric record for 15KO360

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: 15KO360   
# Created Wed Dec 25 02:10:21 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     23 observations of     23
# Arc:   6.96y
# First observation: 2014/06/28
#  Last observation: 2021/06/13
# Chi-squared of fit:     5.53 DOF:     40 RMS:  0.09
# Min/Max residuals:    -0.27    0.18
# Exact a, adot, b, bdot, g, gdot:
  1.839759E-05  3.213127E-02 -2.790234E-06 -3.057574E-03  2.715353E-02 -5.917005E-03
# Covariance matrix:
  4.0044E-13 -3.5914E-13 -2.4678E-14  3.0778E-14 -1.1046E-13 -1.2809E-12
 -3.5914E-13  8.2298E-13  5.5183E-14 -7.5677E-14 -5.5540E-13  3.1328E-12
 -2.4678E-14  5.5183E-14  1.1070E-13 -3.3592E-14 -3.3753E-14  2.1465E-13
  3.0778E-14 -7.5677E-14 -3.3592E-14  2.4997E-14  5.2872E-14 -2.9449E-13
 -1.1046E-13 -5.5540E-13 -3.3753E-14  5.2872E-14  1.1103E-12 -2.1742E-12
 -1.2809E-12  3.1328E-12  2.1465E-13 -2.9449E-13 -2.1742E-12  1.2191E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.835941 -127.707671   -0.705702   -0.023435   -0.734038  2456836.503148
# Heliocentric elements and errors
Epoch:              2456836.5000  =  2014/06/28
Mean Anomaly:          347.58979 +/-     0.011
Argument of Peri:      230.50600 +/-     0.027
Long of Asc Node:       34.90744 +/-     0.001
Inclination:             5.66788 +/-     0.000
Eccentricity:         0.41465226 +/-    0.0001
Semi-Major Axis:     61.32877835 +/-    0.0198
Time of Perihelion: 2462883.9400 +/-      82.3
Perihelion:          35.89866166 +/-    0.0144
Aphelion:            86.75889503 +/-    0.0293
Period (y)              480.2912 +/-      0.23
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -22.40574681 +/-    0.0009
Ecliptic Y          -30.13226018 +/-    0.0011
Ecliptic Z           -1.17995402 +/-    0.0000
Ecliptic XDOT         0.00292872 +/-    0.0000
Ecliptic YDOT        -0.00150582 +/-    0.0000
Ecliptic ZDOT        -0.00028889 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.56822224 +/-    0.0010
Geocenter to KBO     36.82779402 +/-    0.0014
# Hcoef:  6.54

The following table shows the complete astrometric record for 15KO360. 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 (15KO360) followed by the observatory code and reference code for the source of the astrometry.

2014 06  28.002370 15 17 31.27   -20 06 59.5         15KO360   W84  C~7gsQ      
2014 06  28.148012 15 17 30.75   -20 06 58.0         15KO360   W84  C~7gsQ      
2015 05  20.17185  15 28 03.84   -20 56 06.7   21.2G 15KO360   W84  C~6c0d      
2015 05  20.18140  15 28 03.79   -20 56 06.7         15KO360   W84  C~6c0d      
2015 05  20.18468  15 28 03.77   -20 56 06.5         15KO360   W84  C~6c0d      
2015 05  21.18326  15 27 58.38   -20 55 49.0   21.8G 15KO360   W84  C~6c0d      
2015 05  21.18650  15 27 58.35   -20 55 49.0         15KO360   W84  C~6c0d      
2015 05  21.18977  15 27 58.34   -20 55 49.1         15KO360   W84  C~6c0d      
2015 05  21.22039  15 27 58.18   -20 55 48.3         15KO360   W84  C~6c0d      
2015 05  22.25230  15 27 52.61   -20 55 30.2   22.0G 15KO360   W84  C~6c0d      
2015 05  22.25874  15 27 52.57   -20 55 30.1         15KO360   W84  C~6c0d      
2015 05  22.26524  15 27 52.54   -20 55 30.0         15KO360   W84  C~6c0d      
2015 05  23.16514  15 27 47.70   -20 55 14.2   22.2G 15KO360   W84  C~6c0d      
2015 05  23.17157  15 27 47.67   -20 55 14.0         15KO360   W84  C~6c0d      
2015 05  23.17807  15 27 47.63   -20 55 13.9         15KO360   W84  C~6c0d      
2015 05  24.164317 15 27 42.35   -20 54 56.5         15KO360   W84  C~7gsQ      
2015 05  24.177295 15 27 42.28   -20 54 56.4         15KO360   W84  C~7gsQ      
2015 07  15.050963 15 24 09.40   -20 42 11.5         15KO360   W84  C~7gsQ      
2015 07  15.060862 15 24 09.39   -20 42 11.2         15KO360   W84  C~7gsQ      
2017 05  01.182906 15 45 15.75   -22 14 23.8         15KO360   W84  C~7gsQ      
2017 05  01.184969 15 45 15.74   -22 14 23.8         15KO360   W84  C~7gsQ      
2021 06  13.033491 16 14 01.61   -24 18 25.0   22.6V 15KO360   W84  C~7gsQ      
2021 06  13.164130 16 14 00.88   -24 18 23.2   22.5V 15KO360   W84  C~7gsQ      

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     0.12       0.00     0.18
     2   0.0004      0.00     0.05       0.00    -0.27
     3   0.8930      0.00    -0.04       0.00     0.11
     4   0.8930      0.00    -0.00       0.00    -0.06
     5   0.8930      0.00    -0.03       0.00     0.09
     6   0.8958      0.00     0.04       0.00     0.05
     7   0.8958      0.00    -0.14       0.00    -0.01
     8   0.8958      0.00    -0.02       0.00    -0.17
     9   0.8959      0.00     0.10       0.00     0.09
    10   0.8987      0.00     0.03       0.00     0.03
    11   0.8987      0.00    -0.04       0.00     0.02
    12   0.8987      0.00     0.04       0.00    -0.00
    13   0.9012      0.00    -0.11       0.00    -0.04
    14   0.9012      0.00    -0.03       0.00     0.04
    15   0.9012      0.00    -0.10       0.00     0.03
    16   0.9039      0.00     0.01       0.00     0.04
    17   0.9040      0.00     0.02       0.00    -0.09
    18   1.0460      0.00    -0.12       0.00    -0.11
    19   1.0460      0.00     0.06       0.00     0.10
    20   2.8424      0.00     0.08       0.00     0.01
    21   2.8424      0.00     0.09       0.00    -0.02
    22   6.9597      0.00     0.05       0.00    -0.05
    23   6.9601      0.00    -0.09       0.00     0.05

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.

15KO360    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        60.810    60.809    60.810
ecceobj         0.411     0.411     0.411
incobj          5.686     5.686     5.686
qmin           35.185    35.135    35.302
qmax           89.354    89.053    89.121
amean          61.418    61.040    60.811
amin           60.000    60.059    59.905
amax           62.675    62.490    62.521
emean           0.414     0.411     0.407
emin            0.396     0.399     0.396
emax            0.427     0.425     0.425
imean           5.468     5.403     5.760
imin            4.984     4.955     5.078
imax            6.131     6.025     6.146
excite_mean     0.424     0.422     0.419
fracstop        1.000     1.000     1.000
cjmean          3.079     3.078     3.078

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       186.1     185.3     194.4
kozaiamp        180.0     179.9     180.0