Orbit Fit and Astrometric record for 13JO64

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: 13JO64    
# Created Wed Apr 25 01:38:04 2018
# Orbit generated from Bernstein formalism
# Fitting   30 observations of   30
# Arc:   3.82y
# First observation: 2013/04/09
#  Last observation: 2017/02/02
Preliminary a, adot, b, bdot, g, gdot:
   0.000160   0.038991   0.000047   0.003513   0.028310   0.000000
# Chi-squared of fit:     7.30 DOF:   54 RMS:  0.09
# Min/Max residuals:    -0.36    0.27
# Exact a, adot, b, bdot, g, gdot:
  2.154788E-05  3.995055E-02  1.550332E-06  3.596147E-03  2.885062E-02  4.229564E-03
# Covariance matrix:
  1.6619E-13 -1.0925E-13 -1.5467E-15 -2.3357E-16  9.9453E-14 -3.5678E-13
 -1.0925E-13  2.8973E-13 -5.8421E-15  1.7685E-14  6.6171E-14  1.9751E-12
 -1.5467E-15 -5.8421E-15  9.3505E-14 -5.8327E-14 -7.4317E-15 -5.9650E-14
 -2.3357E-16  1.7685E-14 -5.8327E-14  7.7189E-14  1.3131E-14  1.7092E-13
  9.9453E-14  6.6171E-14 -7.4317E-15  1.3131E-14  2.4029E-13  8.3648E-13
 -3.5678E-13  1.9751E-12 -5.9650E-14  1.7092E-13  8.3648E-13  1.8440E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    6.933875 -121.780366    0.623778    0.094877   -0.779992  2456392.040188
# Heliocentric elements and errors
Epoch:              2456390.5000  =  2013/04/08
Mean Anomaly:            1.10228 +/-     0.001
Argument of Peri:       40.50592 +/-     0.014
Long of Asc Node:      185.23095 +/-     0.002
Inclination:             8.58284 +/-     0.000
Eccentricity:         0.75237818 +/-    0.0001
Semi-Major Axis:    141.84499534 +/-    0.0579
Time of Perihelion: 2454501.1577 +/-       2.1
Perihelion:          35.12391571 +/-    0.0202
Aphelion:           248.56607497 +/-    0.1024
Period (y)             1689.3873 +/-      1.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -19.06413372 +/-    0.0003
Ecliptic Y          -29.58640797 +/-    0.0005
Ecliptic Z            4.18453200 +/-    0.0001
Ecliptic XDOT         0.00302836 +/-    0.0000
Ecliptic YDOT        -0.00230002 +/-    0.0000
Ecliptic ZDOT         0.00038737 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.44442183 +/-    0.0004
Geocenter to KBO     34.66130012 +/-    0.0006
# Hcoef:  8.24

The following table shows the complete astrometric record for 13JO64. 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 (13JO64) followed by the observatory code and reference code for the source of the astrometry.

2013 04  09.53941  15 50 12.075  -12 59 50.19  23.5r 13JO64    568  C~1XRd      
2013 04  10.50850  15 50 08.527  -12 59 29.12  23.5r 13JO64    568  C~1XRd      
2013 04  10.54891  15 50 08.373  -12 59 28.22  23.5r 13JO64    568  C~1XRd      
2013 04  19.56175  15 49 32.173  -12 56 08.89  23.6r 13JO64    568  C~1XRd      
2013 05  07.43997  15 48 07.284  -12 49 35.91  23.6r 13JO64    568  C~1XRd      
2013 05  07.48420  15 48 07.051  -12 49 34.90  23.6r 13JO64    568  C~1XRd      
2013 05  07.52439  15 48 06.844  -12 49 34.08  23.4r 13JO64    568  C~1XRd      
2013 05  09.48456  15 47 56.824  -12 48 52.56  23.5r 13JO64    568  C~1XRd      
2013 05  10.49178  15 47 51.641  -12 48 31.43  23.5r 13JO64    568  C~1XRd      
2013 06  01.38796  15 45 57.807  -12 41 40.36  23.5r 13JO64    568  C~1XRd      
2013 06  02.39467  15 45 52.697  -12 41 24.90        13JO64    568  C~1XRd      
2013 06  06.36358  15 45 32.857  -12 40 24.01  23.6r 13JO64    568  C~1XRd      
2013 07  02.31641  15 43 41.991  -12 36 03.34  23.8r 13JO64    568  C~1XRd      
2013 07  03.35437  15 43 38.470  -12 35 58.36  23.7r 13JO64    568  C~1XRd      
2014 02  28.64346  16 00 31.056  -13 28 11.71  23.6r 13JO64    568  C~2LSW      
2014 03  06.57105  16 00 33.178  -13 26 53.49  24.3r 13JO64    568  C~1XRd      
2014 04  30.43255  15 58 05.263  -13 09 16.01  23.8r 13JO64    568  C~1XRd      
2014 04  30.48383  15 58 05.022  -13 09 14.98  23.7r 13JO64    568  C~1XRd      
2014 04  30.53560  15 58 04.756  -13 09 14.02  23.7r 13JO64    568  C~1XRd      
2014 05  05.50159  15 57 40.605  -13 07 30.07  23.4r 13JO64    568  C~1XRd      
2014 05  06.44327  15 57 35.931  -13 07 10.71  23.5r 13JO64    568  C~1XRd      
2014 05  06.49413  15 57 35.673  -13 07 09.70  23.7r 13JO64    568  C~1XRd      
2014 05  06.57022  15 57 35.284  -13 07 08.11  23.5r 13JO64    568  C~1XRd      
2014 06  21.42818  15 53 45.056  -12 55 02.23  23.7r 13JO64    568  C~1XRd      
2014 06  22.40089  15 53 40.864  -12 54 53.47  23.5r 13JO64    568  C~1XRd      
2014 06  30.42288  15 53 08.435  -12 53 54.95  23.7r 13JO64    568  C~1XRd      
2014 07  18.35282  15 52 13.850  -12 53 15.57  23.5r 13JO64    568  C~1XRd      
2015 03  22.58694  16 09 31.225  -13 37 43.77  23.7r 13JO64    568  C~1XRd      
2015 04  18.50253  16 08 16.211  -13 29 03.79  23.5r 13JO64    568  C~1XRd      
2017 02  02.65595  16 26 22.624  -14 12 00.17  23.6w 13JO64    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     0.07       0.00     0.09
  2   0.0027    -55.17    -0.03       9.43     0.01
  3   0.0028    -57.57    -0.04       9.82     0.02
  4   0.0274   -617.24    -0.04      90.52     0.08
  5   0.0764  -1914.20    -0.00     205.69    -0.01
  6   0.0765  -1917.75    -0.07     205.94     0.04
  7   0.0766  -1920.88    -0.03     206.08     0.01
  8   0.0820  -2072.97    -0.04     214.80     0.03
  9   0.0847  -2151.56    -0.02     218.96     0.04
 10   0.1447  -3866.90     0.12     256.89     0.27
 11   0.1474  -3943.27     0.19     255.60    -0.36
 12   0.1583  -4240.02     0.02     251.35     0.04
 13   0.2294  -5881.28    -0.07     148.17     0.07
 14   0.2322  -5932.69    -0.09     141.62     0.02
 15   0.8901   9199.97    -0.02     234.57    -0.10
 16   0.9063   9214.27     0.05     317.56    -0.11
 17   1.0565   6879.90    -0.03     907.53    -0.02
 18   1.0567   6876.24     0.10     907.81    -0.04
 19   1.0568   6872.23    -0.08     907.94    -0.21
 20   1.0704   6505.17    -0.05     936.38     0.00
 21   1.0730   6434.29     0.02     941.12    -0.04
 22   1.0731   6430.39     0.04     941.32    -0.07
 23   1.0733   6424.49     0.01     941.70    -0.06
 24   1.1989   2980.52    -0.08     945.50    -0.02
 25   1.2015   2918.75     0.09     941.09     0.06
 26   1.2235   2442.89    -0.05     897.77     0.04
 27   1.2726   1654.55     0.04     766.52     0.11
 28   1.9495  17064.60     0.01    1256.35     0.03
 29   2.0232  15882.40    -0.02    1551.69    -0.02
 30   3.8196  32132.94    -0.01    2007.69     0.10

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.

13JO64    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj       139.748   139.928   139.568
ecceobj         0.749     0.749     0.748
incobj          8.598     8.598     8.598
qmin           33.683    33.672    33.666
qmax          264.980   271.502   273.179
amean         136.705   143.989   142.951
amin          129.508   138.157   133.350
amax          150.135   153.348   154.079
emean           0.743     0.756     0.754
emin            0.724     0.742     0.733
emax            0.765     0.771     0.773
imean           7.844     8.156     8.119
imin            7.007     7.306     7.355
imax            8.721     8.909     9.150
excite_mean     0.756     0.769     0.767
fracstop        1.000     1.000     1.000
cjmean          3.043     3.044     3.042

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       154.4     128.6     137.3
kozaiamp        110.5      70.4     100.9