Orbit Fit and Astrometric record for 13JR65

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: 13JR65    
# Created Tue Oct 17 01:38:16 2017
# Orbit generated from Bernstein formalism
# Fitting   27 observations of   27
# Arc:   2.00y
# First observation: 2013/04/17
#  Last observation: 2015/04/18
Preliminary a, adot, b, bdot, g, gdot:
  -0.000117   0.027705   0.000008  -0.004456   0.025956   0.000000
# Chi-squared of fit:     3.51 DOF:   48 RMS:  0.06
# Min/Max residuals:    -0.13    0.14
# Exact a, adot, b, bdot, g, gdot:
  1.610768E-05  2.760036E-02 -3.358303E-06 -4.443827E-03  2.607565E-02 -2.855311E-03
# Covariance matrix:
  1.6823E-13 -1.0387E-13 -3.6936E-16  4.9429E-16  8.7556E-14  8.7976E-14
 -1.0387E-13  5.1407E-13  1.2296E-14 -7.1396E-14  2.5374E-13  9.2927E-12
 -3.6936E-16  1.2296E-14  1.3197E-13 -1.0356E-13  7.4841E-15  2.9836E-13
  4.9429E-16 -7.1396E-14 -1.0356E-13  1.4598E-13 -4.7478E-14 -1.7393E-12
  8.7556E-14  2.5374E-13  7.4841E-15 -4.7478E-14  3.8638E-13  6.5508E-12
  8.7976E-14  9.2927E-12  2.9836E-13 -1.7393E-12  6.5508E-12  2.2701E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.593031 -119.976764    0.540191    0.112106   -0.840856  2456399.969218
# Heliocentric elements and errors
Epoch:              2456390.5000  =  2013/04/08
Mean Anomaly:          329.24911 +/-     0.083
Argument of Peri:      184.68677 +/-     0.139
Long of Asc Node:       98.15142 +/-     0.002
Inclination:            11.72394 +/-     0.001
Eccentricity:         0.18640321 +/-    0.0004
Semi-Major Axis:     46.02867231 +/-    0.0089
Time of Perihelion: 2466133.5819 +/-      26.1
Perihelion:          37.44878008 +/-    0.0208
Aphelion:            54.60856454 +/-    0.0222
Period (y)              312.2848 +/-      0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -19.88412325 +/-    0.0005
Ecliptic Y          -33.39122016 +/-    0.0008
Ecliptic Z            5.06731602 +/-    0.0001
Ecliptic XDOT         0.00262164 +/-    0.0000
Ecliptic YDOT        -0.00124367 +/-    0.0000
Ecliptic ZDOT        -0.00050197 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.19221393 +/-    0.0007
Geocenter to KBO     38.34995572 +/-    0.0009
# Hcoef:  7.93

The following table shows the complete astrometric record for 13JR65. 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 (13JR65) followed by the observatory code and reference code for the source of the astrometry.

2013 04  17.46844  15 57 56.731  -12 43 38.54  23.9r 13JR65    568  C~1XRg      
2013 04  19.44641  15 57 48.602  -12 43 05.89  23.7r 13JR65    568  C~1XRg      
2013 04  19.50094  15 57 48.373  -12 43 05.00  23.6r 13JR65    568  C~1XRg      
2013 05  08.43031  15 56 21.100  -12 37 57.75  23.7r 13JR65    568  C~1XRg      
2013 05  08.47938  15 56 20.863  -12 37 56.95  23.5r 13JR65    568  C~1XRg      
2013 05  08.52324  15 56 20.634  -12 37 56.25  23.3r 13JR65    568  C~1XRg      
2013 05  09.53023  15 56 15.625  -12 37 40.74        13JR65    568  C~1XRg      
2013 05  10.53581  15 56 10.601  -12 37 25.45  23.4r 13JR65    568  C~1XRg      
2013 06  06.38838  15 53 54.489  -12 31 46.45  24.0r 13JR65    568  C~1XRg      
2013 07  02.34127  15 52 01.365  -12 29 27.17  24.1r 13JR65    568  C~1XRg      
2013 07  03.37823  15 51 57.622  -12 29 26.21  23.7r 13JR65    568  C~1XRg      
2014 03  06.58616  16 05 40.779  -13 27 14.16        13JR65    568  C~1XRg      
2014 03  06.59120  16 05 40.782  -13 27 14.17  23.4r 13JR65    568  C~1XRg      
2014 03  07.56585  16 05 40.511  -13 27 04.57  23.8r 13JR65    568  C~1XRg      
2014 05  01.40606  16 03 06.588  -13 14 09.64  23.5r 13JR65    568  C~1XRg      
2014 05  01.45743  16 03 06.336  -13 14 08.80  23.7r 13JR65    568  C~1XRg      
2014 05  04.40376  16 02 52.318  -13 13 23.53  23.9r 13JR65    568  C~1XRg      
2014 05  04.45442  16 02 52.072  -13 13 22.87  23.6r 13JR65    568  C~1XRg      
2014 05  04.50508  16 02 51.826  -13 13 22.15  23.8r 13JR65    568  C~1XRg      
2014 05  25.49675  16 01 05.743  -13 08 30.52  23.6r 13JR65    568  C~1XRg      
2014 06  02.47294  16 00 24.849  -13 07 00.67  23.4r 13JR65    568  C~1XRg      
2014 07  01.38714  15 58 12.767  -13 04 01.12  23.8r 13JR65    568  C~1XRg      
2014 07  18.36111  15 57 18.103  -13 04 24.38  23.9r 13JR65    568  C~1XRg      
2014 07  26.28881  15 57 00.621  -13 05 10.73  24.0r 13JR65    568  C~1XRg      
2015 03  22.57876  16 11 35.433  -13 57 34.87  23.9r 13JR65    568  C~1XRg      
2015 04  18.50253  16 10 17.938  -13 51 21.75  23.6r 13JR65    568  C~2LSW      
2015 04  18.56543  16 10 17.683  -13 51 20.93  23.7r 13JR65    568  C~1XRg      

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     0.13       0.00     0.14
  2   0.0054   -123.10    -0.08       7.72    -0.13
  3   0.0056   -126.56    -0.04       7.91    -0.13
  4   0.0574  -1439.62    -0.05      47.39    -0.02
  5   0.0575  -1443.18     0.09      47.46     0.05
  6   0.0576  -1446.60    -0.02      47.46     0.05
  7   0.0604  -1521.55    -0.01      47.59     0.08
  8   0.0632  -1596.66     0.02      47.45     0.05
  9   0.1367  -3616.75     0.00     -32.29    -0.08
 10   0.2077  -5266.75     0.05    -241.36    -0.07
 11   0.2106  -5320.59    -0.09    -251.90     0.08
 12   0.8846   7168.93    -0.07   -1206.96    -0.00
 13   0.8847   7168.98     0.00   -1206.97    -0.05
 14   0.8873   7163.21    -0.03   -1198.32     0.08
 15   1.0375   4805.82     0.12    -882.12     0.01
 16   1.0376   4802.05     0.02    -882.02     0.04
 17   1.0457   4592.33    -0.06    -878.36     0.06
 18   1.0458   4588.68    -0.01    -878.43    -0.04
 19   1.0460   4585.02     0.04    -878.44    -0.09
 20   1.1034   3008.12     0.03    -902.33    -0.08
 21   1.1253   2404.77    -0.03    -934.41    -0.06
 22   1.2044    478.52    -0.02   -1149.23    -0.01
 23   1.2509   -298.69    -0.02   -1334.90     0.06
 24   1.2726   -539.24     0.02   -1432.51     0.02
 25   1.9277  12604.76     0.03   -1996.35     0.09
 26   2.0015  11421.84    -0.01   -1844.96     0.03
 27   2.0016  11418.02    -0.01   -1844.86    -0.09

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.

13JR65    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        45.896    45.917    45.874
ecceobj         0.187     0.188     0.186
incobj         11.716    11.717    11.716
qmin           36.757    36.708    36.760
qmax           56.182    56.306    56.145
amean          46.267    46.289    46.249
amin           45.867    45.887    45.838
amax           46.748    46.791    46.730
emean           0.187     0.188     0.186
emin            0.174     0.175     0.173
emax            0.203     0.205     0.203
imean           9.622     9.614     9.621
imin            9.027     9.003     9.029
imax           10.373    10.367    10.373
excite_mean     0.251     0.252     0.250
fracstop        1.000     1.000     1.000
cjmean          3.052     3.052     3.052

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       181.8     181.8     181.8
kozaiamp        180.0     180.0     180.0