Orbit Fit and Astrometric record for 13SK102

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: 13SK102   
# Created Fri Mar 29 01:15:41 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     46 observations of     46
# Arc:   5.16y
# First observation: 2013/09/28
#  Last observation: 2018/11/27
# Chi-squared of fit:    12.77 DOF:     86 RMS:  0.09
# Min/Max residuals:    -0.47    0.16
# Exact a, adot, b, bdot, g, gdot:
  1.534197E-05  1.683044E-02  5.669211E-07  1.045230E-03  2.054842E-02  2.002743E-03
# Covariance matrix:
  1.2357E-13 -5.1045E-14 -3.8695E-16 -1.8537E-15  5.2563E-14 -3.5829E-13
 -5.1045E-14  1.0432E-13 -4.7375E-15  7.0089E-15  6.6425E-14  1.3525E-12
 -3.8695E-16 -4.7375E-15  8.7021E-14 -2.5143E-14 -7.5582E-15 -7.0279E-14
 -1.8537E-15  7.0089E-15 -2.5143E-14  1.1841E-14  5.3099E-15  1.0202E-13
  5.2563E-14  6.6425E-14 -7.5582E-15  5.3099E-15  2.2006E-13  1.0233E-12
 -3.5829E-13  1.3525E-12 -7.0279E-14  1.0202E-13  1.0233E-12  1.9687E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -6.658528    4.894128    0.001254   -0.116121   -0.995525  2456563.624840
# Heliocentric elements and errors
Epoch:              2456564.5000  =  2013/09/29
Mean Anomaly:          134.63686 +/-     0.063
Argument of Peri:      150.92374 +/-     0.060
Long of Asc Node:       66.43496 +/-     0.002
Inclination:             7.41205 +/-     0.000
Eccentricity:         0.18229505 +/-    0.0001
Semi-Major Axis:     43.48476847 +/-    0.0033
Time of Perihelion: 2417393.4110 +/-      18.9
Perihelion:          35.55771042 +/-    0.0060
Aphelion:            51.41182652 +/-    0.0066
Period (y)              286.7569 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           49.15930907 +/-    0.0011
Ecliptic Y            4.21133777 +/-    0.0001
Ecliptic Z           -5.64284637 +/-    0.0001
Ecliptic XDOT         0.00008268 +/-    0.0000
Ecliptic YDOT         0.00225697 +/-    0.0000
Ecliptic ZDOT         0.00010752 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   49.66092511 +/-    0.0011
Geocenter to KBO     48.66549925 +/-    0.0011
# Hcoef:  6.08

The following table shows the complete astrometric record for 13SK102. 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 (13SK102) followed by the observatory code and reference code for the source of the astrometry.

2013 09  28.124062 00 28 32.27   -04 10 03.8   23.7g 13SK102   W84  C~35bY      
2013 09  28.12458  00 28 32.299  -04 10 03.80  24.1g 13SK102   W84  C~4yR1      
2013 09  28.13265  00 28 32.272  -04 10 03.86  22.7i 13SK102   W84  C~4yR1      
2013 09  28.13265  00 28 32.27   -04 10 03.9   22.8i 13SK102   W84  C~3clF      
2013 10  13.17502  00 27 33.967  -04 15 51.37  22.2i 13SK102   W84  C~4yR1      
2013 10  13.17502  00 27 33.97   -04 15 51.4   22.3i 13SK102   W84  C~3clF      
2013 10  13.17651  00 27 33.958  -04 15 51.34  22.6z 13SK102   W84  C~4yR1      
2013 10  13.17651  00 27 33.96   -04 15 51.3   23.1z 13SK102   W84  C~3clF      
2013 11  23.10450  00 25 27.690  -04 25 24.48  23.1r 13SK102   W84  C~4yR1      
2013 11  23.10450  00 25 27.69   -04 25 24.5   23.2r 13SK102   W84  C~3clF      
2013 11  23.13634  00 25 27.619  -04 25 24.59  22.7i 13SK102   W84  C~4yR1      
2013 11  23.13634  00 25 27.62   -04 25 24.6   23.0i 13SK102   W84  C~3clF      
2014 10  03.27155  00 31 39.690  -03 45 48.48  23.5r 13SK102   W84  C~4yR1      
2014 11  14.061134 00 29 14.89   -03 58 15.5   22.8i 13SK102   W84  C~35bY      
2014 11  14.06166  00 29 14.895  -03 58 15.45  22.6i 13SK102   W84  C~4yR1      
2014 11  15.03684  00 29 12.330  -03 58 24.87  23.3r 13SK102   W84  C~4yR1      
2014 11  15.03684  00 29 12.33   -03 58 24.9   23.4r 13SK102   W84  C~3clF      
2014 11  17.062442 00 29 07.16   -03 58 43.1   22.7z 13SK102   W84  C~35bY      
2014 11  17.06297  00 29 07.173  -03 58 43.26  22.4z 13SK102   W84  C~4yR1      
2014 11  18.11963  00 29 04.571  -03 58 52.12  22.6z 13SK102   W84  C~4yR1      
2014 11  18.11963  00 29 04.57   -03 58 52.1   22.6z 13SK102   W84  C~3clF      
2016 09  09.17148  00 39 57.798  -02 43 49.48  22.6z 13SK102   W84  C~4yR1      
2016 09  09.17148  00 39 57.80   -02 43 49.4   22.5z 13SK102   W84  C~3clF      
2016 09  09.27364  00 39 57.435  -02 43 51.79  22.8r 13SK102   W84  C~4yR1      
2016 09  09.27364  00 39 57.43   -02 43 51.8   22.9r 13SK102   W84  C~3clF      
2016 09  09.27503  00 39 57.422  -02 43 51.90  22.9i 13SK102   W84  C~4yR1      
2016 09  09.27503  00 39 57.42   -02 43 51.9   22.9i 13SK102   W84  C~3clF      
2016 09  09.27641  00 39 57.418  -02 43 51.85  24.1g 13SK102   W84  C~4yR1      
2016 09  09.27641  00 39 57.42   -02 43 51.8   24.2g 13SK102   W84  C~3clF      
2016 11  07.10737  00 36 21.264  -03 05 04.13  22.4z 13SK102   W84  C~4yR1      
2016 11  08.18412  00 36 17.981  -03 05 18.46  22.8i 13SK102   W84  C~4yR1      
2016 11  08.18412  00 36 17.98   -03 05 18.4   22.8i 13SK102   W84  C~3clF      
2016 11  18.152396 00 35 50.39   -03 07 07.3   22.4z 13SK102   W84  C~35bY      
2016 11  18.15293  00 35 50.404  -03 07 07.47  22.3z 13SK102   W84  C~4yR1      
2016 11  26.09648  00 35 32.453  -03 08 01.31  23.4r 13SK102   W84  C~4yR1      
2016 11  26.09648  00 35 32.45   -03 08 01.3   23.6r 13SK102   W84  C~3clF      
2016 11  26.09786  00 35 32.446  -03 08 01.27  24.3g 13SK102   W84  C~4yR1      
2017 10  20.16631  00 40 46.654  -02 33 54.84  22.8i 13SK102   W84  C~4yR1      
2017 10  22.15797  00 40 39.297  -02 34 34.66  22.9z 13SK102   W84  C~4yR1      
2017 10  27.14514  00 40 21.310  -02 36 09.06  22.9z 13SK102   W84  C~4yR1      
2017 10  28.17095  00 40 17.703  -02 36 27.36  21.6z 13SK102   W84  C~4yR1      
2018 09  09.34244  00 46 43.749  -01 51 44.77  22.7r 13SK102   W84  C~4yR1      
2018 09  09.34385  00 46 43.739  -01 51 44.90  23.6g 13SK102   W84  C~4yR1      
2018 11  08.17671  00 43 04.150  -02 13 24.42  23.2r 13SK102   W84  C~4yR1      
2018 11  08.17810  00 43 04.144  -02 13 24.40  22.8i 13SK102   W84  C~4yR1      
2018 11  27.08173  00 42 14.329  -02 16 31.98  23.9g 13SK102   W84  C~4yR1      

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    -0.47       0.00    -0.15
     2   0.0000      0.00    -0.01       0.00    -0.14
     3   0.0000      0.00     0.07       0.00    -0.00
     4   0.0000      0.00     0.04       0.00    -0.04
     5   0.0412      0.00     0.11       0.00     0.04
     6   0.0412      0.00     0.16       0.00     0.01
     7   0.0412      0.00     0.07       0.00     0.10
     8   0.0412      0.00     0.10       0.00     0.14
     9   0.1533      0.00     0.01       0.00     0.02
    10   0.1533      0.00     0.01       0.00     0.04
    11   0.1534      0.00    -0.04       0.00     0.07
    12   0.1534      0.00    -0.05       0.00     0.08
    13   1.0134      0.00     0.08       0.00    -0.10
    14   1.1278      0.00    -0.09       0.00    -0.01
    15   1.1278      0.00     0.00       0.00     0.04
    16   1.1305      0.00    -0.00       0.00     0.06
    17   1.1305      0.00    -0.00       0.00     0.09
    18   1.1360      0.00    -0.13       0.00     0.11
    19   1.1360      0.00     0.08       0.00    -0.05
    20   1.1389      0.00     0.06       0.00    -0.14
    21   1.1389      0.00     0.08       0.00    -0.16
    22   2.9488      0.00     0.13       0.00    -0.12
    23   2.9488      0.00     0.10       0.00    -0.20
    24   2.9491      0.00     0.04       0.00     0.02
    25   2.9491      0.00     0.11       0.00     0.03
    26   2.9491      0.00    -0.04       0.00    -0.04
    27   2.9491      0.00    -0.01       0.00    -0.04
    28   2.9491      0.00     0.04       0.00     0.09
    29   2.9491      0.00     0.01       0.00     0.04
    30   3.1102      0.00    -0.01       0.00    -0.02
    31   3.1131      0.00    -0.02       0.00     0.01
    32   3.1131      0.00    -0.03       0.00     0.07
    33   3.1404      0.00    -0.27       0.00     0.13
    34   3.1404      0.00    -0.03       0.00    -0.04
    35   3.1621      0.00    -0.02       0.00    -0.00
    36   3.1621      0.00     0.03       0.00    -0.01
    37   3.1621      0.00    -0.04       0.00     0.04
    38   4.0603      0.00     0.02       0.00     0.08
    39   4.0658      0.00     0.09       0.00     0.06
    40   4.0795      0.00     0.04       0.00    -0.01
    41   4.0823      0.00     0.08       0.00     0.08
    42   4.9479      0.00    -0.04       0.00    -0.01
    43   4.9479      0.00    -0.11       0.00    -0.11
    44   5.1117      0.00     0.02       0.00     0.02
    45   5.1117      0.00    -0.00       0.00     0.06
    46   5.1635      0.00     0.08       0.00    -0.01

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.

13SK102    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        43.710    43.710    43.710
ecceobj         0.178     0.178     0.178
incobj          7.412     7.412     7.412
qmin           34.181    34.489    32.225
qmax           53.884    53.689    57.620
amean          43.726    43.834    43.746
amin           43.134    43.177    43.092
amax           44.347    44.360    45.330
emean           0.182     0.179     0.207
emin            0.148     0.146     0.153
emax            0.218     0.212     0.271
imean           6.365     5.371     3.857
imin            3.989     3.938     2.409
imax            8.844     6.347     6.796
excite_mean     0.215     0.203     0.219
fracstop        1.000     1.000     1.000
cjmean          3.040     3.048     3.039

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       179.3     183.3     179.4
kozaiamp        180.0     179.9     179.9