Orbit Fit and Astrometric record for 13JM65

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: 13JM65    
# Created Thu Oct 19 01:38:16 2017
# Orbit generated from Bernstein formalism
# Fitting   33 observations of   33
# Arc:   4.06y
# First observation: 2013/04/09
#  Last observation: 2017/05/02
Preliminary a, adot, b, bdot, g, gdot:
  -0.000079   0.015729   0.000005  -0.002535   0.019349   0.000000
# Chi-squared of fit:    11.91 DOF:   60 RMS:  0.11
# Min/Max residuals:    -0.20    0.33
# Exact a, adot, b, bdot, g, gdot:
  1.276463E-05  1.564485E-02 -2.193182E-06 -2.523162E-03  1.941563E-02 -4.098061E-04
# Covariance matrix:
  1.8014E-13 -1.2308E-13 -6.5571E-15  1.4218E-14  1.3968E-13 -1.5983E-12
 -1.2308E-13  2.7698E-13  1.4986E-14 -4.3457E-14  1.5954E-14  4.8848E-12
 -6.5571E-15  1.4986E-14  8.3287E-14 -3.4566E-14 -1.5206E-15  2.8961E-13
  1.4218E-14 -4.3457E-14 -3.4566E-14  3.4445E-14 -6.3924E-15 -8.5320E-13
  1.3968E-13  1.5954E-14 -1.5206E-15 -6.3924E-15  3.2870E-13  7.1833E-13
 -1.5983E-12  4.8848E-12  2.8961E-13 -8.5320E-13  7.1833E-13  9.5904E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    6.681254 -122.785518    0.610069    0.092681   -0.791018  2456392.027708
# Heliocentric elements and errors
Epoch:              2456390.5000  =  2013/04/08
Mean Anomaly:          198.34933 +/-     0.231
Argument of Peri:      309.55512 +/-     0.232
Long of Asc Node:       92.06461 +/-     0.002
Inclination:            11.22792 +/-     0.000
Eccentricity:         0.12628540 +/-    0.0002
Semi-Major Axis:     46.64399036 +/-    0.0048
Time of Perihelion: 2508638.1761 +/-      74.3
Perihelion:          40.75353523 +/-    0.0106
Aphelion:            52.53444549 +/-    0.0111
Period (y)              318.5677 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -28.64320999 +/-    0.0008
Ecliptic Y          -43.34332218 +/-    0.0013
Ecliptic Z            5.99230067 +/-    0.0002
Ecliptic XDOT         0.00185706 +/-    0.0000
Ecliptic YDOT        -0.00118080 +/-    0.0000
Ecliptic ZDOT        -0.00035996 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   52.29708140 +/-    0.0011
Geocenter to KBO     51.50489496 +/-    0.0015
# Hcoef:  7.18

The following table shows the complete astrometric record for 13JM65. 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 (13JM65) followed by the observatory code and reference code for the source of the astrometry.

2013 04  09.52693  15 45 58.574  -13 01 34.28  24.1r 13JM65    568  C~1XRg      
2013 04  10.49580  15 45 55.700  -13 01 21.26  23.8r 13JM65    568  C~1XRg      
2013 04  10.53608  15 45 55.559  -13 01 20.56  24.7r 13JM65    568  C~1XRg      
2013 04  19.54976  15 45 26.628  -12 59 17.68  24.4r 13JM65    568  C~1XRg      
2013 05  04.42521  15 44 32.430  -12 55 54.56  23.8r 13JM65    568  C~1XRg      
2013 05  07.42802  15 44 20.796  -12 55 14.82  23.8r 13JM65    568  C~1XRg      
2013 05  07.47225  15 44 20.613  -12 55 14.17  23.9r 13JM65    568  C~1XRg      
2013 05  07.51247  15 44 20.457  -12 55 13.63  24.0r 13JM65    568  C~1XRg      
2013 05  10.47981  15 44 08.814  -12 54 35.13  24.0r 13JM65    568  C~1XRg      
2013 06  01.38796  15 42 42.105  -12 50 24.22  24.6r 13JM65    568  C~1XRg      
2013 06  02.39467  15 42 38.239  -12 50 14.32  24.4r 13JM65    568  C~1XRg      
2013 06  06.36358  15 42 23.093  -12 49 38.27  24.2r 13JM65    568  C~1XRg      
2013 07  02.31641  15 40 57.063  -12 47 11.26  24.4r 13JM65    568  C~1XRg      
2013 07  03.35437  15 40 54.254  -12 47 08.92  24.2r 13JM65    568  C~1XRg      
2014 03  06.56097  15 50 29.152  -13 28 06.85  24.4r 13JM65    568  C~1XRg      
2014 04  04.50977  15 49 40.618  -13 22 57.49  24.1r 13JM65    568  C~1XRg      
2014 04  04.57895  15 49 40.425  -13 22 56.52  24.2r 13JM65    568  C~1XRg      
2014 04  30.42479  15 48 16.503  -13 17 15.00  24.0r 13JM65    568  C~1XRg      
2014 05  05.48752  15 47 57.263  -13 16 08.23        13JM65    568  C~1XRg      
2014 05  06.41961  15 47 53.678  -13 15 56.17  24.1r 13JM65    568  C~1XRg      
2014 05  06.43534  15 47 53.610  -13 15 55.98  24.0r 13JM65    568  C~1XRg      
2014 05  06.48626  15 47 53.417  -13 15 55.23  24.1r 13JM65    568  C~1XRg      
2014 05  06.56242  15 47 53.116  -13 15 54.31  24.1r 13JM65    568  C~1XRg      
2014 05  22.46976  15 46 50.088  -13 12 40.09        13JM65    568  C~1XRg      
2014 05  22.49015  15 46 50.010  -13 12 40.20  24.2r 13JM65    568  C~1XRg      
2016 04  03.57901  15 56 39.514  -14 03 03.97  24.5w 13JM65    568  C~2LSW      
2016 04  08.62856  15 56 26.077  -14 02 03.54  24.5w 13JM65    568  C~2LSW      
2016 04  09.57252  15 56 23.417  -14 01 52.07  24.7w 13JM65    568  C~2LSW      
2016 04  29.52172  15 55 17.326  -13 57 41.29  24.4w 13JM65    568  C~2LSW      
2016 05  04.49428  15 54 58.634  -13 56 38.84  24.4w 13JM65    568  C~2LSW      
2016 05  30.43368  15 53 15.604  -13 51 46.10  24.3w 13JM65    568  C~2LSW      
2017 05  02.34669  15 58 39.21   -14 17 06.5   24.6R 13JM65    G37  C~2Fa2      
2017 05  02.41270  15 58 38.96   -14 17 05.6         13JM65    G37  C~2Fa2      

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    -0.00       0.00     0.03
  2   0.0027    -43.84     0.08       3.41     0.04
  3   0.0028    -46.00    -0.20       3.64     0.14
  4   0.0274   -485.55    -0.13      29.87    -0.08
  5   0.0682  -1303.15     0.11      52.02     0.03
  6   0.0764  -1477.83     0.04      52.91    -0.03
  7   0.0765  -1480.58    -0.08      52.95     0.01
  8   0.0766  -1482.92    -0.04      52.97     0.03
  9   0.0847  -1657.46    -0.12      52.58    -0.07
 10   0.1447  -2949.56     0.07      13.74    -0.08
 11   0.1475  -3006.90     0.33      10.71     0.21
 12   0.1583  -3230.90     0.03      -3.87     0.01
 13   0.2294  -4490.48    -0.14    -144.01    -0.03
 14   0.2322  -4531.06    -0.01    -151.02     0.06
 15   0.9063   4204.05     0.09    -689.26     0.11
 16   0.9856   3445.39     0.16    -540.95    -0.08
 17   0.9858   3442.43     0.05    -540.61    -0.00
 18   1.0565   2172.30    -0.05    -474.53    -0.20
 19   1.0704   1883.58    -0.19    -470.90    -0.05
 20   1.0729   1829.86    -0.03    -470.60    -0.06
 21   1.0730   1828.85    -0.11    -470.63    -0.09
 22   1.0731   1825.94    -0.02    -470.52     0.02
 23   1.0733   1821.45    -0.02    -470.59    -0.05
 24   1.1169    880.92     0.07    -483.34     0.25
 25   1.1169    879.84     0.21    -483.69    -0.07
 26   2.9844   9930.66     0.04   -1586.67    -0.06
 27   2.9982   9726.32    -0.02   -1568.70    -0.00
 28   3.0008   9685.97     0.09   -1565.64    -0.01
 29   3.0554   8690.76    -0.18   -1523.53    -0.18
 30   3.0690   8411.11    -0.02   -1520.13    -0.06
 31   3.1401   6880.87    -0.07   -1553.47     0.00
 32   4.0625  11814.72     0.04   -2047.15     0.10
 33   4.0627  11810.97     0.04   -2047.02     0.19

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.

13JM65    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        46.523    46.537    46.508
ecceobj         0.130     0.129     0.130
incobj         11.222    11.222    11.222
qmin           40.073    40.160    40.141
qmax           53.904    53.951    53.973
amean          46.851    46.866    46.837
amin           46.472    46.476    46.432
amax           47.299    47.311    47.280
emean           0.127     0.127     0.127
emin            0.115     0.115     0.115
emax            0.140     0.140     0.142
imean           9.615     9.616     9.615
imin            9.194     9.191     9.194
imax            9.982     9.978     9.984
excite_mean     0.210     0.210     0.210
fracstop        1.000     1.000     1.000
cjmean          3.082     3.082     3.082

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       179.2     179.4     178.9
kozaiamp        179.9     180.0     180.0