Orbit Fit and Astrometric record for 16SC59

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: 16SC59    
# Created Sat Mar 30 01:19:00 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     24 observations of     24
# Arc:   5.09y
# First observation: 2013/10/03
#  Last observation: 2018/11/07
# Chi-squared of fit:    12.25 DOF:     42 RMS:  0.13
# Min/Max residuals:    -0.35    0.25
# Exact a, adot, b, bdot, g, gdot:
  1.691222E-05  2.880197E-02 -1.657127E-06 -2.625581E-03  2.674156E-02  9.156928E-04
# Covariance matrix:
  3.7330E-13 -1.8146E-13 -1.0217E-14  1.0569E-14  9.5212E-14 -8.9681E-13
 -1.8146E-13  2.2963E-13  1.3279E-14 -1.9952E-14  8.2648E-14  1.6936E-12
 -1.0217E-14  1.3279E-14  2.5829E-13 -7.7315E-14 -1.9035E-15  1.1259E-13
  1.0569E-14 -1.9952E-14 -7.7315E-14  3.1479E-14 -8.1143E-15 -1.6884E-13
  9.5212E-14  8.2648E-14 -1.9035E-15 -8.1143E-15  3.5251E-13  6.8950E-13
 -8.9681E-13  1.6936E-12  1.1259E-13 -1.6884E-13  6.8950E-13  1.4332E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -13.137450   25.409935    0.267414   -0.219047   -0.939023  2456568.797688
# Heliocentric elements and errors
Epoch:              2456568.5000  =  2013/10/03
Mean Anomaly:            7.79300 +/-     0.044
Argument of Peri:      237.36577 +/-     0.059
Long of Asc Node:      137.82212 +/-     0.001
Inclination:            13.85665 +/-     0.000
Eccentricity:         0.13978776 +/-    0.0001
Semi-Major Axis:     44.47587296 +/-    0.0047
Time of Perihelion: 2454223.2587 +/-      13.2
Perihelion:          38.25869041 +/-    0.0055
Aphelion:            50.69305552 +/-    0.0065
Period (y)              296.6162 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           33.87836826 +/-    0.0007
Ecliptic Y           15.80112491 +/-    0.0003
Ecliptic Z           -8.49952069 +/-    0.0002
Ecliptic XDOT        -0.00124420 +/-    0.0000
Ecliptic YDOT         0.00267514 +/-    0.0000
Ecliptic ZDOT        -0.00028295 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.33614678 +/-    0.0007
Geocenter to KBO     37.39499319 +/-    0.0008
# Hcoef:  7.61

The following table shows the complete astrometric record for 16SC59. 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 (16SC59) followed by the observatory code and reference code for the source of the astrometry.

2013 10  03.29691  01 53 13.981  -02 25 31.08  24.1g 16SC59    W84  C~55Zx      
2013 11  03.05919  01 50 45.78   -02 40 25.6   23.7r 16SC59    W84  C~55Zx      
2013 11  03.12180  01 50 45.47   -02 40 27.0         16SC59    W84  C~55Zx      
2013 11  03.20695  01 50 45.05   -02 40 29.0         16SC59    W84  C~55Zx      
2014 10  29.26551  01 57 33.005  -02 11 15.31  23.0i 16SC59    W84  C~55Zx      
2014 12  25.09950  01 54 01.530  -02 19 40.50  23.4r 16SC59    W84  C~55Zx      
2015 12  04.06115  02 01 16.550  -01 53 40.77  23.6i 16SC59    W84  C~55Zx      
2015 12  04.06252  02 01 16.552  -01 53 40.52  23.4r 16SC59    W84  C~55Zx      
2016 09  10.40183  02 13 42.244  -00 51 23.76  22.7i 16SC59    W84  C~55Zx      
2016 09  25.26803  02 12 50.232  -00 59 42.16  24.1g 16SC59    W84  C~55Zx      
2016 09  28.49552  02 12 37.09   -01 01 30.5   24.1g 16SC59    568  C~2eAJ      
2016 09  28.54358  02 12 36.88   -01 01 32.2   24.0g 16SC59    568  C~2eAJ      
2016 09  28.62851  02 12 36.52   -01 01 35.0   24.3g 16SC59    568  C~2eAJ      
2016 09  29.55477  02 12 32.65   -01 02 06.0   24.1g 16SC59    568  C~2eAJ      
2016 09  29.62808  02 12 32.33   -01 02 08.4   24.0g 16SC59    568  C~2eAJ      
2016 10  27.17338  02 10 23.083  -01 16 13.33  23.3r 16SC59    W84  C~55Zx      
2016 10  27.17475  02 10 23.087  -01 16 13.32  23.9g 16SC59    W84  C~55Zx      
2016 11  07.16172  02 09 29.066  -01 20 37.84  22.9i 16SC59    W84  C~55Zx      
2016 11  27.11271  02 07 58.801  -01 25 54.36  23.7r 16SC59    W84  C~55Zx      
2016 12  23.05112  02 06 35.953  -01 26 26.71  22.6i 16SC59    W84  C~55Zx      
2017 11  17.14134  02 15 01.884  -00 56 34.98  21.9i 16SC59    W84  C~55Zx      
2017 11  17.14270  02 15 01.865  -00 56 35.19  24.4g 16SC59    W84  C~55Zx      
2018 11  07.23094  02 22 08.903  -00 26 10.89  23.5r 16SC59    W84  C~55Zx      
2018 11  07.23231  02 22 08.896  -00 26 10.56  23.7g 16SC59    W84  C~55Zx      

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     0.03
     2   0.0842      0.00     0.09       0.00    -0.07
     3   0.0844      0.00     0.03       0.00    -0.04
     4   0.0846      0.00    -0.04       0.00    -0.10
     5   1.0704      0.00     0.15       0.00    -0.09
     6   1.2260      0.00    -0.10       0.00     0.03
     7   2.1677      0.00    -0.15       0.00    -0.12
     8   2.1677      0.00    -0.04       0.00     0.14
     9   2.9380      0.00     0.13       0.00    -0.14
    10   2.9787      0.00     0.22       0.00    -0.16
    11   2.9875      0.00    -0.04       0.00     0.18
    12   2.9877      0.00    -0.13       0.00     0.09
    13   2.9879      0.00    -0.13       0.00     0.13
    14   2.9904      0.00    -0.11       0.00     0.13
    15   2.9906      0.00    -0.19       0.00     0.18
    16   3.0661      0.00    -0.12       0.00    -0.04
    17   3.0661      0.00     0.05       0.00     0.00
    18   3.0961      0.00     0.18       0.00    -0.09
    19   3.1508      0.00     0.02       0.00     0.11
    20   3.2218      0.00     0.00       0.00     0.20
    21   4.1228      0.00     0.25       0.00     0.11
    22   4.1228      0.00     0.06       0.00    -0.08
    23   5.0950      0.00    -0.01       0.00    -0.35
    24   5.0950      0.00    -0.01       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.

16SC59    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        44.752    44.752    44.752
ecceobj         0.145     0.145     0.145
incobj         13.841    13.841    13.841
qmin           37.404    37.401    37.409
qmax           51.683    51.671    51.692
amean          44.387    44.387    44.387
amin           44.016    44.020    44.012
amax           44.809    44.808    44.807
emean           0.139     0.139     0.139
emin            0.125     0.125     0.125
emax            0.154     0.154     0.154
imean          12.703    12.703    12.703
imin           12.117    12.117    12.116
imax           13.359    13.358    13.359
excite_mean     0.260     0.260     0.260
fracstop        1.000     1.000     1.000
cjmean          3.025     3.025     3.025

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       183.7     183.7     183.7
kozaiamp        179.9     179.9     179.9