Orbit Fit and Astrometric record for 13JP64

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: 13JP64    
# Created Tue Jul 17 01:38:02 2018
# Orbit generated from Bernstein formalism
# Fitting   25 observations of   25
# Arc:   1.95y
# First observation: 2013/04/10
#  Last observation: 2015/03/22
Preliminary a, adot, b, bdot, g, gdot:
  -0.000098   0.034166   0.000000   0.006834   0.028658   0.000000
# Chi-squared of fit:     5.79 DOF:   44 RMS:  0.09
# Min/Max residuals:    -0.21    0.29
# Exact a, adot, b, bdot, g, gdot:
  1.895250E-05  3.384514E-02  3.883431E-06  6.755160E-03  2.862466E-02 -7.664873E-03
# Covariance matrix:
  2.4548E-13 -9.1782E-14 -6.6244E-15  1.8148E-14  1.9441E-13  1.5252E-12
 -9.1782E-14  5.8721E-13 -2.0964E-14  1.0731E-13  2.6212E-13  1.0427E-11
 -6.6244E-15 -2.0964E-14  1.5095E-13 -1.3946E-13 -2.1999E-14 -5.7604E-13
  1.8148E-14  1.0731E-13 -1.3946E-13  2.2368E-13  8.3885E-14  2.8760E-12
  1.9441E-13  2.6212E-13 -2.1999E-14  8.3885E-14  4.7841E-13  7.7168E-12
  1.5252E-12  1.0427E-11 -5.7604E-13  2.8760E-12  7.7168E-12  2.7835E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.764371 -119.161228    0.645696    0.103807   -0.761206  2456393.077738
# Heliocentric elements and errors
Epoch:              2456390.5000  =  2013/04/08
Mean Anomaly:          342.32818 +/-     0.021
Argument of Peri:       80.19078 +/-     0.060
Long of Asc Node:      206.66298 +/-     0.002
Inclination:            13.71466 +/-     0.001
Eccentricity:         0.43291095 +/-    0.0005
Semi-Major Axis:     57.07378265 +/-    0.0294
Time of Perihelion: 2464121.4393 +/-       6.9
Perihelion:          32.36591713 +/-    0.0311
Aphelion:            81.78164818 +/-    0.0496
Period (y)              431.1845 +/-      0.33
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -17.80358089 +/-    0.0004
Ecliptic Y          -30.58131653 +/-    0.0007
Ecliptic Z            4.71986146 +/-    0.0001
Ecliptic XDOT         0.00321705 +/-    0.0000
Ecliptic YDOT        -0.00086648 +/-    0.0000
Ecliptic ZDOT         0.00054128 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.69960092 +/-    0.0007
Geocenter to KBO     34.93491512 +/-    0.0008
# Hcoef:  8.54

The following table shows the complete astrometric record for 13JP64. 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 (13JP64) followed by the observatory code and reference code for the source of the astrometry.

2013 04  10.57696  16 01 20.004  -12 43 19.84  23.8r 13JP64    568  C~1XRd      
2013 04  19.50094  16 00 44.313  -12 39 44.44  23.7r 13JP64    568  C~1XRd      
2013 05  08.43031  15 59 13.073  -12 32 13.66  24.0r 13JP64    568  C~1XRd      
2013 05  08.47938  15 59 12.820  -12 32 12.51  23.9r 13JP64    568  C~1XRd      
2013 05  08.52324  15 59 12.572  -12 32 11.53  23.7r 13JP64    568  C~1XRd      
2013 05  09.53023  15 59 07.309  -12 31 48.50  23.9r 13JP64    568  C~1XRd      
2013 05  10.53581  15 59 02.029  -12 31 25.42  23.9r 13JP64    568  C~1XRd      
2013 06  04.40115  15 56 48.442  -12 23 06.99  23.8r 13JP64    568  C~1XRd      
2013 06  06.40466  15 56 37.964  -12 22 33.57  23.9r 13JP64    568  C~1XRd      
2013 07  02.35699  15 54 38.243  -12 17 30.25  24.0r 13JP64    568  C~1XRd      
2013 07  03.39388  15 54 34.310  -12 17 23.48  23.9r 13JP64    568  C~1XRd      
2014 03  06.59624  16 10 33.232  -12 55 41.96  24.2r 13JP64    568  C~1XRd      
2014 03  07.57089  16 10 33.286  -12 55 24.78  24.1r 13JP64    568  C~1XRd      
2014 05  01.40994  16 08 01.650  -12 35 03.02  24.2r 13JP64    568  C~1XRd      
2014 05  01.46131  16 08 01.386  -12 35 01.65  23.8r 13JP64    568  C~1XRd      
2014 05  01.52001  16 08 01.093  -12 35 00.48  23.9r 13JP64    568  C~1XRd      
2014 05  04.40764  16 07 46.732  -12 33 53.21  23.7r 13JP64    568  C~1XRd      
2014 05  04.45830  16 07 46.477  -12 33 52.02  23.9r 13JP64    568  C~1XRd      
2014 05  04.50896  16 07 46.209  -12 33 50.98  23.8r 13JP64    568  C~1XRd      
2014 05  22.52968  16 06 10.559  -12 27 20.59  23.6r 13JP64    568  C~1XRd      
2014 05  22.54954  16 06 10.448  -12 27 19.97  24.0r 13JP64    568  C~1XRd      
2014 05  25.48891  16 05 54.371  -12 26 22.54  23.6r 13JP64    568  C~1XRd      
2014 07  01.39102  16 02 49.986  -12 18 04.37  23.8r 13JP64    568  C~1XRd      
2014 07  18.36507  16 01 51.879  -12 17 06.02  24.0r 13JP64    568  C~1XRd      
2015 03  22.59103  16 18 35.001  -12 49 29.70  23.9r 13JP64    568  C~1XRd      

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    -0.05       0.00    -0.03
  2   0.0244   -554.70     0.04     107.17    -0.08
  3   0.0763  -1953.57    -0.06     281.76     0.01
  4   0.0764  -1957.43     0.05     282.14     0.06
  5   0.0765  -1961.18    -0.16     282.37    -0.01
  6   0.0793  -2041.31    -0.02     289.47     0.02
  7   0.0820  -2121.69     0.12     296.55     0.29
  8   0.1501  -4139.16    -0.05     389.75    -0.21
  9   0.1556  -4296.33     0.09     391.31     0.07
 10   0.2266  -6076.82     0.00     330.41     0.01
 11   0.2295  -6134.67     0.02     325.22    -0.01
 12   0.9035   8085.50    -0.03     844.91     0.00
 13   0.9062   8083.01    -0.04     861.94    -0.03
 14   1.0564   5669.25     0.16    1637.25    -0.11
 15   1.0565   5665.19     0.02    1637.85     0.04
 16   1.0567   5660.75     0.08    1638.17    -0.15
 17   1.0646   5441.32    -0.04    1663.68     0.04
 18   1.0647   5437.43     0.03    1664.13     0.09
 19   1.0648   5433.37    -0.05    1664.40    -0.06
 20   1.1142   3982.82     0.03    1776.38    -0.13
 21   1.1142   3981.11    -0.02    1776.67     0.08
 22   1.1223   3738.86     0.04    1787.23    -0.03
 23   1.2233    991.55    -0.07    1746.43    -0.07
 24   1.2698    145.17    -0.05    1635.19     0.07
 25   1.9467  14960.52    -0.04    2526.48     0.14

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.

13JP64    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        56.920    56.989    56.851
ecceobj         0.433     0.434     0.432
incobj         13.744    13.744    13.744
qmin           31.686    31.365    31.837
qmax           83.974    84.513    84.099
amean          56.458    56.627    56.979
amin           55.202    54.465    55.269
amax           58.354    58.406    58.418
emean           0.416     0.423     0.417
emin            0.393     0.390     0.389
emax            0.443     0.447     0.444
imean          15.256    14.585    15.812
imin           13.494    11.972    13.791
imax           16.599    16.755    17.402
excite_mean     0.493     0.493     0.498
fracstop        1.000     1.000     1.000
cjmean          2.935     2.937     2.934

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       186.5     186.3     178.2
kozaiamp        179.9     180.0     180.0