Orbit Fit and Astrometric record for 13SQ102

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: 13SQ102   
# Created Sat Nov 27 02:12:03 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     37 observations of     37
# Arc:   5.06y
# First observation: 2013/09/29
#  Last observation: 2018/10/22
# Chi-squared of fit:    23.01 DOF:     68 RMS:  0.14
# Min/Max residuals:    -0.43    0.43
# Exact a, adot, b, bdot, g, gdot:
  1.536060E-05  2.061438E-02  2.490285E-06  2.963753E-03  2.114722E-02 -1.073522E-02
# Covariance matrix:
  3.6182E-13 -4.0002E-13  3.8198E-14 -5.4568E-14 -1.3203E-13 -3.4795E-12
 -4.0002E-13  5.5675E-13 -6.2089E-14  8.2412E-14  4.4271E-14  5.1407E-12
  3.8198E-14 -6.2089E-14  1.1507E-13 -4.2860E-14  5.6475E-14 -5.9814E-13
 -5.4568E-14  8.2412E-14 -4.2860E-14  2.8755E-14 -1.5272E-14  7.8616E-13
 -1.3203E-13  4.4271E-14  5.6475E-14 -1.5272E-14  1.5775E-12  2.1599E-13
 -3.4795E-12  5.1407E-12 -5.9814E-13  7.8616E-13  2.1599E-13  4.8887E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -28.561365  -58.835622   -0.911451   -0.198543   -0.364923  2456565.498218
# Heliocentric elements and errors
Epoch:              2456566.5000  =  2013/10/01
Mean Anomaly:          343.13909 +/-     0.021
Argument of Peri:      358.00106 +/-     0.023
Long of Asc Node:       14.30831 +/-     0.001
Inclination:            29.54952 +/-     0.000
Eccentricity:         0.61558742 +/-    0.0004
Semi-Major Axis:     91.23929674 +/-    0.0770
Time of Perihelion: 2471475.5488 +/-     384.6
Perihelion:          35.07353335 +/-    0.0457
Aphelion:           147.40506012 +/-    0.1292
Period (y)              871.5275 +/-      1.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           22.48821777 +/-    0.0013
Ecliptic Y          -35.42017789 +/-    0.0021
Ecliptic Z          -22.60806586 +/-    0.0013
Ecliptic XDOT         0.00174076 +/-    0.0000
Ecliptic YDOT         0.00226737 +/-    0.0000
Ecliptic ZDOT         0.00100164 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   47.65992380 +/-    0.0018
Geocenter to KBO     47.28797307 +/-    0.0028
# Hcoef:  6.12

The following table shows the complete astrometric record for 13SQ102. 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 (13SQ102) followed by the observatory code and reference code for the source of the astrometry.

2013 09  29.99744  20 49 14.045  -47 31 38.17  22.6i 13SQ102   W84  C~4yR1      
2013 09  29.99744  20 49 14.05   -47 31 38.2   22.7i 13SQ102   W84  C~3clG      
2013 10  30.044630 20 48 42.65   -47 14 07.0   23.5g 13SQ102   W84  C~35bY      
2013 10  30.04516  20 48 42.687  -47 14 07.30  23.6g 13SQ102   W84  C~4yR2      
2014 08  29.076169 20 57 53.40   -47 07 51.4   23.2g 13SQ102   W84  C~35bY      
2014 08  29.07670  20 57 53.434  -47 07 51.43  23.1g 13SQ102   W84  C~4yR2      
2014 09  12.05078  20 56 43.263  -47 05 39.02  22.7i 13SQ102   W84  C~4yR2      
2014 09  12.05078  20 56 43.26   -47 05 39.0   22.7i 13SQ102   W84  C~3clG      
2014 09  20.01295  20 56 09.593  -47 03 22.06  22.8r 13SQ102   W84  C~4yR2      
2014 09  20.01295  20 56 09.59   -47 03 22.1   22.8r 13SQ102   W84  C~3clG      
2014 09  20.02835  20 56 09.523  -47 03 21.71  22.6i 13SQ102   W84  C~4yR2      
2014 09  20.02835  20 56 09.52   -47 03 21.7   22.7i 13SQ102   W84  C~3clG      
2014 09  24.06034  20 55 54.581  -47 01 55.60  23.0r 13SQ102   W84  C~4yR2      
2014 09  24.06034  20 55 54.58   -47 01 55.6   23.0r 13SQ102   W84  C~3clG      
2014 09  24.06307  20 55 54.577  -47 01 55.76  22.5i 13SQ102   W84  C~4yR2      
2014 09  24.06307  20 55 54.58   -47 01 55.8   22.3i 13SQ102   W84  C~3clG      
2014 09  26.00514  20 55 47.932  -47 01 10.33  23.6g 13SQ102   W84  C~4yR2      
2014 09  26.00514  20 55 47.93   -47 01 10.3   23.7g 13SQ102   W84  C~3clG      
2014 09  26.04028  20 55 47.811  -47 01 09.55  22.7r 13SQ102   W84  C~4yR2      
2014 09  26.04028  20 55 47.81   -47 01 09.6   22.8r 13SQ102   W84  C~3clG      
2014 10  02.01339  20 55 29.755  -46 58 35.39  22.6z 13SQ102   W84  C~4yR2      
2014 10  14.01268  20 55 04.971  -46 52 22.82  22.7z 13SQ102   W84  C~4yR2      
2014 10  21.03275  20 54 58.068  -46 48 10.55  23.1z 13SQ102   W84  C~4yR2      
2014 10  22.033692 20 54 57.58   -46 47 32.5   22.6z 13SQ102   W84  C~35bY      
2016 09  08.02771  21 09 46.96   -45 54 51.8   22.3r 13SQ102   W84  C~3clG      
2017 09  08.05344  21 16 11.559  -45 15 51.81  22.9z 13SQ102   W84  C~4yR2      
2017 09  12.09461  21 15 51.515  -45 15 14.13  23.7g 13SQ102   W84  C~4yR2      
2017 09  23.05749  21 15 02.992  -45 12 31.27  22.6i 13SQ102   W84  C~4yR2      
2017 09  23.05887  21 15 02.987  -45 12 31.19  22.4r 13SQ102   W84  C~4yR2      
2017 09  23.06026  21 15 02.994  -45 12 31.20  23.4g 13SQ102   W84  C~4yR2      
2017 09  27.00518  21 14 47.962  -45 11 11.12  22.3i 13SQ102   W84  C~4yR2      
2017 09  27.04443  21 14 47.824  -45 11 10.42  22.7r 13SQ102   W84  C~4yR2      
2017 10  13.07390  21 14 02.409  -45 03 57.59  23.4g 13SQ102   W84  C~4yR2      
2017 10  16.12089  21 13 56.870  -45 02 17.38  22.6i 13SQ102   W84  C~4yR2      
2017 10  16.12226  21 13 56.853  -45 02 17.27  23.2r 13SQ102   W84  C~4yR2      
2017 10  19.09088  21 13 52.453  -45 00 34.39  23.2r 13SQ102   W84  C~4yR2      
2018 10  22.05280  21 20 06.605  -44 18 28.07  21.8z 13SQ102   W84  C~4yR2      

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     0.04       0.00    -0.05
     2   0.0000      0.00    -0.03       0.00    -0.02
     3   0.0823      0.00    -0.37       0.00     0.43
     4   0.0823      0.00     0.18       0.00     0.11
     5   0.9119      0.00    -0.43       0.00     0.05
     6   0.9119      0.00     0.12       0.00     0.02
     7   0.9502      0.00     0.07       0.00     0.08
     8   0.9502      0.00     0.03       0.00     0.10
     9   0.9720      0.00    -0.03       0.00    -0.15
    10   0.9720      0.00     0.02       0.00    -0.11
    11   0.9720      0.00    -0.16       0.00    -0.06
    12   0.9720      0.00    -0.11       0.00    -0.07
    13   0.9831      0.00    -0.05       0.00     0.08
    14   0.9831      0.00    -0.04       0.00     0.08
    15   0.9831      0.00     0.05       0.00    -0.15
    16   0.9831      0.00     0.10       0.00    -0.19
    17   0.9884      0.00     0.01       0.00     0.07
    18   0.9884      0.00     0.04       0.00     0.04
    19   0.9885      0.00     0.02       0.00    -0.06
    20   0.9885      0.00     0.03       0.00    -0.01
    21   1.0048      0.00     0.20       0.00    -0.07
    22   1.0377      0.00     0.14       0.00    -0.04
    23   1.0569      0.00     0.14       0.00    -0.23
    24   1.0596      0.00     0.43       0.00    -0.03
    25   2.9405      0.00    -0.12       0.00     0.23
    26   3.9399      0.00     0.02       0.00    -0.18
    27   3.9510      0.00     0.16       0.00     0.01
    28   3.9810      0.00    -0.00       0.00    -0.04
    29   3.9810      0.00     0.01       0.00     0.02
    30   3.9810      0.00     0.20       0.00    -0.02
    31   3.9918      0.00    -0.04       0.00     0.08
    32   3.9919      0.00     0.08       0.00    -0.07
    33   4.0358      0.00    -0.18       0.00     0.06
    34   4.0441      0.00     0.09       0.00    -0.04
    35   4.0441      0.00    -0.13       0.00     0.02
    36   4.0523      0.00    -0.20       0.00     0.13
    37   5.0597      0.00    -0.01       0.00    -0.04

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.

13SQ102    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        92.136    92.134    92.137
ecceobj         0.620     0.620     0.620
incobj         29.546    29.546    29.546
qmin           34.481    34.485    34.484
qmax          153.706   152.989   153.077
amean          91.958    91.912    91.956
amin           90.304    90.316    90.362
amax           94.585    94.401    94.394
emean           0.614     0.611     0.612
emin            0.599     0.597     0.597
emax            0.626     0.625     0.626
imean          30.018    30.219    30.158
imin           29.397    29.397    29.397
imax           30.751    30.935    30.982
excite_mean     0.792     0.792     0.792
fracstop        1.000     1.000     1.000
cjmean          2.717     2.717     2.717

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        51.7      47.4      46.9
kozaiamp        180.0     180.0     180.0