Orbit Fit and Astrometric record for 13JG65

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: 13JG65    
# Created Sun Oct 22 01:38:17 2017
# Orbit generated from Bernstein formalism
# Fitting   31 observations of   31
# Arc:   3.07y
# First observation: 2013/04/09
#  Last observation: 2016/05/06
Preliminary a, adot, b, bdot, g, gdot:
  -0.000181   0.042858   0.000057  -0.010863   0.034481   0.000000
# Chi-squared of fit:     7.35 DOF:   56 RMS:  0.09
# Min/Max residuals:    -0.17    0.20
# Exact a, adot, b, bdot, g, gdot:
  1.912160E-05  4.223686E-02 -4.709853E-06 -1.072658E-02  3.419636E-02 -2.561270E-03
# Covariance matrix:
  1.7093E-13 -9.4011E-14 -5.1206E-15  1.1527E-14  7.9216E-14 -3.6679E-13
 -9.4011E-14  3.2919E-13  2.7065E-14 -7.8512E-14  1.5721E-13  2.5817E-12
 -5.1206E-15  2.7065E-14  1.1009E-13 -6.5560E-14  1.2897E-14  2.5558E-13
  1.1527E-14 -7.8512E-14 -6.5560E-14  7.7595E-14 -4.3076E-14 -7.3996E-13
  7.9216E-14  1.5721E-13  1.2897E-14 -4.3076E-14  2.6035E-13  1.4373E-12
 -3.6679E-13  2.5817E-12  2.5558E-13 -7.3996E-13  1.4373E-12  2.4327E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.655298 -120.819142    0.636662    0.103304   -0.768429  2456392.055928
# Heliocentric elements and errors
Epoch:              2456390.5000  =  2013/04/08
Mean Anomaly:          346.52744 +/-     0.018
Argument of Peri:      174.60164 +/-     0.031
Long of Asc Node:       85.19561 +/-     0.000
Inclination:            15.95767 +/-     0.000
Eccentricity:         0.24689246 +/-    0.0001
Semi-Major Axis:     39.24087088 +/-    0.0031
Time of Perihelion: 2459750.6130 +/-       4.4
Perihelion:          29.55259567 +/-    0.0035
Aphelion:            48.92914609 +/-    0.0046
Period (y)              245.8194 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -15.79131790 +/-    0.0002
Ecliptic Y          -25.22706890 +/-    0.0004
Ecliptic Z            3.89543153 +/-    0.0001
Ecliptic XDOT         0.00294328 +/-    0.0000
Ecliptic YDOT        -0.00165585 +/-    0.0000
Ecliptic ZDOT        -0.00087832 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   30.01574776 +/-    0.0003
Geocenter to KBO     29.24287911 +/-    0.0004
# Hcoef:  9.00

The following table shows the complete astrometric record for 13JG65. 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 (13JG65) followed by the observatory code and reference code for the source of the astrometry.

2013 04  09.55515  15 54 38.967  -12 29 39.26  23.9r 13JG65    568  C~1XRf      
2013 04  10.52413  15 54 34.556  -12 29 21.14  23.8r 13JG65    568  C~1XRf      
2013 04  10.56492  15 54 34.370  -12 29 20.33  24.1r 13JG65    568  C~1XRf      
2013 04  19.57778  15 53 49.377  -12 26 30.07  23.9r 13JG65    568  C~1XRf      
2013 05  07.45588  15 52 03.931  -12 20 59.50  23.6r 13JG65    568  C~1XRf      
2013 05  07.50007  15 52 03.644  -12 20 58.73  23.6r 13JG65    568  C~1XRf      
2013 05  07.54026  15 52 03.389  -12 20 57.98  23.7r 13JG65    568  C~1XRf      
2013 06  04.37698  15 49 03.386  -12 14 22.34  23.4r 13JG65    568  C~1XRf      
2013 06  06.37603  15 48 50.879  -12 14 03.09  23.6r 13JG65    568  C~1XRf      
2013 07  02.32839  15 46 29.535  -12 12 27.38  23.7r 13JG65    568  C~1XRf      
2013 07  03.36611  15 46 24.958  -12 12 29.96  23.7r 13JG65    568  C~1XRf      
2014 03  06.58616  16 05 12.144  -13 43 06.56  23.5r 13JG65    568  C~1XRf      
2014 05  01.40606  16 01 59.109  -13 29 27.92  23.3r 13JG65    568  C~1XRf      
2014 05  01.45743  16 01 58.788  -13 29 27.01  23.7r 13JG65    568  C~1XRf      
2014 05  01.51609  16 01 58.450  -13 29 25.82  23.9r 13JG65    568  C~1XRf      
2014 05  04.40376  16 01 40.869  -13 28 37.99  23.5r 13JG65    568  C~1XRf      
2014 05  04.50508  16 01 40.224  -13 28 36.18        13JG65    568  C~1XRf      
2014 05  22.53753  15 59 43.926  -13 24 02.47  23.2r 13JG65    568  C~1XRf      
2014 05  25.49675  15 59 24.382  -13 23 24.12  23.6r 13JG65    568  C~1XRf      
2014 06  02.47294  15 58 32.094  -13 21 51.68  23.7r 13JG65    568  C~1XRf      
2014 06  21.43206  15 56 36.541  -13 19 37.83  23.6r 13JG65    568  C~1XRf      
2014 06  22.40477  15 56 31.148  -13 19 34.74  23.5r 13JG65    568  C~1XRf      
2014 06  30.42685  15 55 49.326  -13 19 23.84  23.8r 13JG65    568  C~1XRf      
2014 07  01.38714  15 55 44.681  -13 19 24.51  23.5r 13JG65    568  C~1XRf      
2014 07  26.28881  15 54 16.323  -13 22 07.59  23.7r 13JG65    568  C~1XRf      
2015 03  22.57427  16 14 11.050  -14 44 26.48  23.7r 13JG65    568  C~1XRf      
2015 04  18.56543  16 12 35.595  -14 38 25.10  23.5r 13JG65    568  C~1XRf      
2015 08  11.31763  16 03 05.998  -14 31 36.95  23.6r 13JG65    568  C~2LSW      
2016 05  06.53851  16 20 24.093  -15 38 25.02  23.4r 13JG65    568  C~2LSW      
2016 05  06.59080  16 20 23.743  -15 38 24.34  24.6u 13JG65    568  C~2LSW      
2016 05  06.60444  16 20 23.674  -15 38 24.18  23.7r 13JG65    568  C~2LSW      

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     0.08       0.00    -0.05
  2   0.0027    -66.96    -0.03       4.23    -0.00
  3   0.0028    -69.79     0.05       4.46     0.07
  4   0.0274   -749.82    -0.13      33.12     0.02
  5   0.0764  -2329.70     0.01      31.42     0.03
  6   0.0765  -2333.97    -0.02      31.29     0.01
  7   0.0766  -2337.79     0.03      31.23     0.07
  8   0.1528  -5000.61     0.17    -142.76     0.04
  9   0.1583  -5183.94     0.06    -163.18     0.11
 10   0.2294  -7230.01    -0.09    -515.65    -0.06
 11   0.2322  -7295.05    -0.07    -532.69    -0.03
 12   0.9063   9962.05     0.07   -2432.55    -0.06
 13   1.0591   7035.63    -0.00   -2192.72    -0.10
 14   1.0593   7030.86    -0.11   -2192.77    -0.07
 15   1.0594   7025.78     0.17   -2192.60     0.20
 16   1.0673   6764.66     0.05   -2197.47    -0.10
 17   1.0676   6755.06    -0.11   -2197.60     0.01
 18   1.1170   5036.62    -0.06   -2273.68     0.14
 19   1.1251   4749.43     0.01   -2294.30    -0.15
 20   1.1469   3983.24    -0.15   -2359.87    -0.03
 21   1.1988   2304.84     0.03   -2576.12    -0.09
 22   1.2015   2227.17     0.07   -2589.38    -0.14
 23   1.2235   1627.63    -0.09   -2705.24    -0.01
 24   1.2261   1561.44    -0.03   -2719.97    -0.06
 25   1.2943    334.02     0.05   -3148.27     0.04
 26   1.9494  18405.54     0.05   -4534.53     0.10
 27   2.0233  16966.17    -0.15   -4441.01     0.08
 28   2.3375   8742.90     0.10   -5654.46     0.05
 29   3.0746  24381.97     0.14   -6736.89     0.04
 30   3.0747  24376.80    -0.17   -6737.14    -0.03
 31   3.0747  24375.78     0.07   -6737.16    -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.

13JG65    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.112    39.120    39.104
ecceobj         0.246     0.246     0.246
incobj         15.950    15.950    15.950
qmin           27.069    27.038    27.063
qmax           52.252    52.287    52.378
amean          39.454    39.454    39.454
amin           39.088    39.100    39.095
amax           39.886    39.880    39.897
emean           0.256     0.256     0.256
emin            0.177     0.176     0.178
emax            0.312     0.313     0.313
imean          14.364    14.342    14.393
imin           11.202    11.151    11.254
imax           18.046    18.060    18.032
excite_mean     0.360     0.360     0.360
fracstop        1.000     1.000     1.000
cjmean          2.904     2.904     2.904

libcent 0       179.5     179.6     179.9
libamp  0        29.4      25.4      34.2
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        88.8      88.5      89.1
kozaiamp         75.8      75.9      75.6