Orbit Fit and Astrometric record for 13JB65

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: 13JB65    
# Created Fri Dec 15 02:37:52 2017
# Orbit generated from Bernstein formalism
# Fitting   32 observations of   32
# Arc:   4.13y
# First observation: 2013/04/09
#  Last observation: 2017/05/26
Preliminary a, adot, b, bdot, g, gdot:
  -0.000097   0.035870   0.000049  -0.016093   0.032210   0.000000
# Chi-squared of fit:     6.68 DOF:   58 RMS:  0.08
# Min/Max residuals:    -0.21    0.18
# Exact a, adot, b, bdot, g, gdot:
  1.766024E-05  3.546570E-02 -7.978606E-06 -1.591830E-02  3.206426E-02  3.915019E-04
# Covariance matrix:
  1.9255E-13 -7.6106E-14 -1.1711E-14  2.5582E-14  1.6870E-13 -4.2923E-13
 -7.6106E-14  2.3670E-13  3.5708E-14 -1.0512E-13  6.6474E-14  1.7761E-12
 -1.1711E-14  3.5708E-14  8.1637E-14 -5.0892E-14  5.0519E-15  3.1568E-13
  2.5582E-14 -1.0512E-13 -5.0892E-14  8.9587E-14 -2.9982E-14 -9.2578E-13
  1.6870E-13  6.6474E-14  5.0519E-15 -2.9982E-14  3.3301E-13  5.1167E-13
 -4.2923E-13  1.7761E-12  3.1568E-13 -9.2578E-13  5.1167E-13  1.5641E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    6.861508 -121.039703    0.633883    0.092920   -0.772041  2456392.040188
# Heliocentric elements and errors
Epoch:              2456390.5000  =  2013/04/08
Mean Anomaly:          358.54038 +/-     0.025
Argument of Peri:      166.11033 +/-     0.037
Long of Asc Node:       72.43523 +/-     0.000
Inclination:            24.93812 +/-     0.000
Eccentricity:         0.18676729 +/-    0.0001
Semi-Major Axis:     39.29965774 +/-    0.0038
Time of Perihelion: 2456755.3526 +/-       6.3
Perihelion:          31.95976724 +/-    0.0040
Aphelion:            46.63954824 +/-    0.0051
Period (y)              246.3720 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -16.90897836 +/-    0.0003
Ecliptic Y          -26.86745745 +/-    0.0005
Ecliptic Z            3.72573959 +/-    0.0001
Ecliptic XDOT         0.00248752 +/-    0.0000
Ecliptic YDOT        -0.00172870 +/-    0.0000
Ecliptic ZDOT        -0.00134534 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   31.96333766 +/-    0.0004
Geocenter to KBO     31.18736867 +/-    0.0006
# Hcoef:  8.44

The following table shows the complete astrometric record for 13JB65. 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 (13JB65) followed by the observatory code and reference code for the source of the astrometry.

2013 04  09.53941  15 53 05.323  -13 13 28.18  23.6r 13JB65    568  C~1XRe      
2013 04  10.50850  15 53 00.957  -13 13 14.69  23.3r 13JB65    568  C~1XRe      
2013 04  10.54891  15 53 00.767  -13 13 14.13  23.5r 13JB65    568  C~1XRe      
2013 04  19.56175  15 52 16.395  -13 11 05.89  23.4r 13JB65    568  C~1XRe      
2013 05  07.43997  15 50 33.324  -13 06 53.00  23.2r 13JB65    568  C~1XRe      
2013 05  07.48420  15 50 33.048  -13 06 52.41  23.2r 13JB65    568  C~1XRe      
2013 05  07.52439  15 50 32.789  -13 06 51.83  23.2r 13JB65    568  C~1XRe      
2013 05  09.48456  15 50 20.661  -13 06 25.73  23.2r 13JB65    568  C~1XRe      
2013 05  10.49178  15 50 14.385  -13 06 12.65  23.3r 13JB65    568  C~1XRe      
2013 06  02.40662  15 47 49.979  -13 02 08.12  23.6r 13JB65    568  C~1XRe      
2013 06  02.41172  15 47 49.963  -13 02 08.09  23.5r 13JB65    568  C~1XRe      
2013 06  02.41674  15 47 49.914  -13 02 07.77  23.4r 13JB65    568  C~1XRe      
2013 06  04.37273  15 47 37.925  -13 01 53.40  23.1r 13JB65    568  C~1XRe      
2013 06  06.37603  15 47 25.773  -13 01 39.85  23.4r 13JB65    568  C~1XRe      
2013 07  02.32839  15 45 08.296  -13 00 58.67  23.1r 13JB65    568  C~1XRe      
2013 07  03.36611  15 45 03.808  -13 01 02.79  23.3r 13JB65    568  C~1XRe      
2014 04  30.43644  15 58 42.974  -14 27 55.82  23.5r 13JB65    568  C~1XRe      
2014 04  30.48774  15 58 42.676  -14 27 55.36  23.4r 13JB65    568  C~1XRe      
2014 04  30.53949  15 58 42.369  -14 27 54.75  23.4r 13JB65    568  C~1XRe      
2014 05  05.50559  15 58 12.787  -14 26 52.69  23.3r 13JB65    568  C~1XRe      
2014 05  06.44715  15 58 07.072  -14 26 41.03  23.5r 13JB65    568  C~1XRe      
2014 05  06.49809  15 58 06.758  -14 26 40.48  23.5r 13JB65    568  C~1XRe      
2014 05  06.57421  15 58 06.282  -14 26 39.50  23.3r 13JB65    568  C~1XRe      
2014 05  22.54166  15 56 25.710  -14 23 38.72  23.3r 13JB65    568  C~1XRe      
2014 05  25.50065  15 56 06.790  -14 23 09.60        13JB65    568  C~1XRe      
2014 06  02.47694  15 55 16.215  -14 22 00.94  23.2r 13JB65    568  C~1XRe      
2014 07  01.38325  15 52 34.582  -14 20 30.69        13JB65    568  C~1XRe      
2014 07  18.35698  15 51 29.012  -14 22 03.37  23.4r 13JB65    568  C~1XRe      
2016 05  10.48176  16 12 49.101  -17 02 11.23  23.3r 13JB65    568  C~2LSW      
2016 05  10.56060  16 12 48.595  -17 02 10.55  23.2r 13JB65    568  C~2LSW      
2017 05  26.33878  16 18 53.44   -18 16 48.2   22.2R 13JB65    G37  C~2Gia      
2017 05  26.39674  16 18 53.07   -18 16 47.8         13JB65    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    -0.04       0.00     0.03
  2   0.0027    -65.16     0.00      -0.25     0.07
  3   0.0028    -68.00    -0.01      -0.29     0.07
  4   0.0274   -728.45     0.01     -11.74     0.07
  5   0.0764  -2253.43     0.04     -84.28     0.04
  6   0.0765  -2257.50     0.06     -84.56     0.04
  7   0.0766  -2261.32    -0.04     -84.80     0.05
  8   0.0820  -2440.01     0.02     -97.09     0.06
  9   0.0847  -2532.39     0.06    -103.88    -0.06
 10   0.1475  -4646.35    -0.05    -317.95    -0.15
 11   0.1475  -4646.58     0.18    -317.97    -0.11
 12   0.1475  -4647.35    -0.13    -317.82     0.11
 13   0.1529  -4821.61    -0.08    -341.62    -0.00
 14   0.1583  -4998.03    -0.06    -366.77    -0.01
 15   0.2294  -6969.80     0.15    -763.37     0.09
 16   0.2322  -7032.98     0.07    -781.73     0.04
 17   1.0565   5740.74    -0.05   -3349.03    -0.02
 18   1.0567   5736.41     0.09   -3349.46    -0.17
 19   1.0568   5731.91     0.11   -3349.78    -0.21
 20   1.0704   5298.28    -0.08   -3377.14    -0.10
 21   1.0730   5214.58    -0.05   -3382.77     0.00
 22   1.0731   5210.00     0.00   -3383.17    -0.06
 23   1.0733   5203.03    -0.05   -3383.63    -0.04
 24   1.1170   3735.24    -0.04   -3508.16    -0.04
 25   1.1252   3460.16     0.06   -3536.67     0.07
 26   1.1470   2726.83    -0.10   -3622.34     0.04
 27   1.2261    410.85    -0.01   -4026.98     0.03
 28   1.2726   -500.94    -0.10   -4319.46     0.13
 29   3.0854  19611.30     0.06  -10052.68    -0.03
 30   3.0856  19603.97    -0.03  -10053.37    -0.09
 31   4.1281  25648.68    -0.09  -13541.63     0.07
 32   4.1283  25643.33     0.12  -13542.17     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.

13JB65    quality flag:3

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

axisobj        39.164    39.176    39.153
ecceobj         0.185     0.185     0.184
incobj         24.937    24.937    24.937
qmin           31.414    31.463    31.458
qmax           47.747    47.773    47.769
amean          39.455    39.455    39.455
amin           39.154    39.148    39.152
amax           39.802    39.811    39.811
emean           0.160     0.160     0.160
emin            0.109     0.110     0.110
emax            0.200     0.200     0.201
imean          24.369    24.350    24.351
imin           23.365    23.369    23.358
imax           25.328    25.300    25.304
excite_mean     0.443     0.443     0.443
fracstop        1.000     1.000     1.000
cjmean          2.821     2.821     2.821

libcent 0       180.3     180.2     180.8
libamp  0        28.2      32.1      29.1
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       177.9     178.6     178.5
kozaiamp        180.0     180.0     180.0