Orbit Fit and Astrometric record for 13JH65

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: 13JH65    
# Created Sun Oct 22 01:38:17 2017
# Orbit generated from Bernstein formalism
# Fitting   24 observations of   26
# Arc:   4.13y
# First observation: 2013/04/10
#  Last observation: 2017/05/26
Preliminary a, adot, b, bdot, g, gdot:
  -0.000952   0.046248  -0.000018   0.001118   0.034516   0.000000
# Chi-squared of fit:    15.87 DOF:   42 RMS:  0.14
# Min/Max residuals:    -0.62    0.31
# Exact a, adot, b, bdot, g, gdot:
  1.975462E-05  4.473990E-02  5.789773E-07  1.055798E-03  3.484376E-02 -5.590576E-03
# Covariance matrix:
  2.1300E-13 -1.5946E-13  1.0624E-15 -4.5994E-15  1.1055E-13 -7.9536E-13
 -1.5946E-13  3.5923E-13 -5.1854E-15  1.0996E-14  4.6325E-14  2.0819E-12
  1.0624E-15 -5.1854E-15  1.0949E-13 -4.2923E-14 -2.4362E-15 -3.2935E-14
 -4.5994E-15  1.0996E-14 -4.2923E-14  3.7247E-14  2.9677E-16  7.1436E-14
  1.1055E-13  4.6325E-14 -2.4362E-15  2.9677E-16  2.7086E-13  2.1270E-13
 -7.9536E-13  2.0819E-12 -3.2935E-14  7.1436E-14  2.1270E-13  1.3473E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.605532 -119.560801    0.640322    0.102290   -0.765936  2456393.077738
# Heliocentric elements and errors
Epoch:              2456390.5000  =  2013/04/08
Mean Anomaly:          338.35345 +/-     0.010
Argument of Peri:      117.74547 +/-     0.020
Long of Asc Node:      160.60320 +/-     0.002
Inclination:             7.55351 +/-     0.000
Eccentricity:         0.28371435 +/-    0.0001
Semi-Major Axis:     39.10968081 +/-    0.0034
Time of Perihelion: 2461762.1901 +/-       2.4
Perihelion:          28.01370310 +/-    0.0034
Aphelion:            50.20565853 +/-    0.0050
Period (y)              244.5877 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -14.97131466 +/-    0.0002
Ecliptic Y          -25.09817918 +/-    0.0004
Ecliptic Z            3.79850036 +/-    0.0001
Ecliptic XDOT         0.00327177 +/-    0.0000
Ecliptic YDOT        -0.00134570 +/-    0.0000
Ecliptic ZDOT         0.00002423 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   29.47011140 +/-    0.0003
Geocenter to KBO     28.69954579 +/-    0.0004
# Hcoef:  9.45

The following table shows the complete astrometric record for 13JH65. 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 (13JH65) followed by the observatory code and reference code for the source of the astrometry.

2013 04  10.57696  15 59 36.713  -12 47 55.04  24.2r 13JH65    568  C~1XRf      
2013 04  17.46844  15 59 04.051  -12 45 02.35  23.4r 13JH65    568  C~1XRf      
2013 04  17.47543  15 59 04.058  -12 45 02.14  23.9r 13JH65    568  C~1XRf      
2013 04  19.50094  15 58 53.618  -12 44 11.58  23.8r 13JH65    568  C~1XRf      
2013 05  08.43031  15 57 03.498  -12 36 24.28  24.0r 13JH65    568  C~1XRf      
2013 05  08.47938  15 57 03.174  -12 36 23.22  23.9r 13JH65    568  C~1XRf      
2013 05  08.52324  15 57 02.905  -12 36 22.29  24.0r 13JH65    568  C~1XRf      
2013 05  09.53023  15 56 56.539  -12 35 58.40  24.3r 13JH65    568  C~1XRf      
2013 05  10.53581  15 56 50.153  -12 35 34.86  23.9r 13JH65    568  C~1XRf      
2013 06  06.38838  15 53 57.015  -12 26 39.95        13JH65    568  C~1XRf      
2013 07  02.34516  15 51 34.590  -12 22 18.00        13JH65    568  C~1XRf      
2013 07  03.37823  15 51 29.960  -12 22 13.91  24.3r 13JH65    568  C~1XRf      
2014 03  06.61136  16 11 15.496  -13 26 40.25  23.9r 13JH65    568  C~1XRf      
2014 03  07.58601  16 11 15.655  -13 26 24.76  24.3r 13JH65    568  C~1XRf      
2014 05  01.43366  16 08 16.074  -13 06 29.14        13JH65    568  C~1XRf      
2014 05  01.48482  16 08 15.747  -13 06 27.86        13JH65    568  C~1XRf      
2014 05  01.54533  16 08 15.376  -13 06 26.51  24.2r 13JH65    568  C~1XRf      
2014 05  04.48162  16 07 57.836  -13 05 17.80  23.5r 13JH65    568  C~1XRf      
2014 05  04.53323  16 07 57.516  -13 05 16.71  24.2r 13JH65    568  C~1XRf      
2014 07  01.39102  16 02 01.640  -12 50 13.38        13JH65    568  C~1XRf      
2014 07  18.36507  16 00 52.709  -12 50 03.21  24.0r 13JH65    568  C~1XRf      
2015 03  22.57019  16 21 31.316  -13 46 59.37  24.2r 13JH65    568  C~2LSW      
2016 05  29.37647  16 26 41.944  -13 47 50.20  24.3w 13JH65    568  C~2LSW      
2016 06  03.41661  16 26 08.189  -13 46 34.37  24.0w 13JH65    568  C~2LSW      
2017 05  26.34407  16 38 03.14   -14 12 07.1   23.4R 13JH65    G37  C~2Gia      
2017 05  26.40282  16 38 02.76   -14 12 05.3         13JH65    G37  C~2Gia      

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     0.11       0.00    -0.02
  2   0.0189   -502.80 (  -0.04)     72.87 (   0.44)
  3   0.0189   -502.74 (   0.57)     73.10 (   0.60)
  4   0.0244   -662.55    -0.11      91.79     0.06
  5   0.0763  -2335.49    -0.01     222.59     0.03
  6   0.0764  -2340.35    -0.12     222.66    -0.09
  7   0.0765  -2344.40     0.08     222.77    -0.17
  8   0.0793  -2440.51    -0.03     227.18    -0.05
  9   0.0820  -2536.84    -0.06     231.17    -0.06
 10   0.1555  -5128.91    -0.09     234.50     0.06
 11   0.2266  -7226.20     0.19      57.48    -0.02
 12   0.2294  -7293.48    -0.09      47.32     0.02
 13   0.9036  10474.59     0.09    -283.47     0.19
 14   0.9063  10473.93     0.04    -267.80     0.09
 15   1.0564   7666.33     0.20     404.44    -0.10
 16   1.0566   7661.39    -0.09     404.77    -0.07
 17   1.0567   7655.80    -0.17     405.05    -0.16
 18   1.0648   7390.75     0.09     422.99     0.05
 19   1.0649   7385.94     0.10     423.15    -0.06
 20   1.2233   2104.62    -0.06     288.62     0.02
 21   1.2698   1114.66     0.08      97.46     0.18
 22   1.9466  19572.40    -0.08     178.82     0.07
 23   3.1343  24085.27    -0.05     934.98     0.24
 24   3.1481  23581.20    -0.13     923.48     0.10
 25   4.1253  34306.15    -0.03    1176.71    -0.62
 26   4.1255  34300.24     0.13    1177.59     0.31

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.

13JH65    quality flag:3

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

axisobj        39.000    39.010    38.991
ecceobj         0.284     0.284     0.284
incobj          7.563     7.563     7.563
qmin           27.453    27.405    27.410
qmax           52.179    52.093    52.178
amean          39.455    39.455    39.455
amin           38.992    38.994    38.976
amax           40.010    39.992    40.054
emean           0.288     0.288     0.288
emin            0.272     0.271     0.273
emax            0.305     0.304     0.303
imean           7.306     7.366     7.271
imin            6.601     6.687     6.641
imax            8.029     8.111     7.879
excite_mean     0.315     0.315     0.315
fracstop        1.000     1.000     1.000
cjmean          2.938     2.938     2.938

libcent 0       180.1     179.9     179.8
libamp  0        84.4      80.3      89.1
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       176.7     180.6     172.7
kozaiamp        180.0     179.9     179.9