Orbit Fit and Astrometric record for 13JA65

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: 13JA65    
# Created Tue Dec 12 02:37:59 2017
# Orbit generated from Bernstein formalism
# Fitting   30 observations of   31
# Arc:   2.00y
# First observation: 2013/04/19
#  Last observation: 2015/04/20
Preliminary a, adot, b, bdot, g, gdot:
  -0.000246   0.035058   0.000004   0.003076   0.029983   0.000000
# Chi-squared of fit:    11.10 DOF:   54 RMS:  0.11
# Min/Max residuals:    -0.22    0.29
# Exact a, adot, b, bdot, g, gdot:
  1.906954E-05  3.503775E-02  1.504792E-06  3.083438E-03  3.040679E-02  1.615956E-03
# Covariance matrix:
  1.6779E-13 -1.5060E-13  1.2562E-16 -1.0384E-15  1.1350E-13 -5.6381E-13
 -1.5060E-13  6.2032E-13 -1.0088E-14  4.6853E-14  1.0895E-13  9.4495E-12
  1.2562E-16 -1.0088E-14  1.0964E-13 -9.4818E-14 -4.9747E-15 -2.1282E-13
 -1.0384E-15  4.6853E-14 -9.4818E-14  1.5080E-13  2.1988E-14  9.8341E-13
  1.1350E-13  1.0895E-13 -4.9747E-15  2.1988E-14  3.3560E-13  3.5650E-12
 -5.6381E-13  9.4495E-12 -2.1282E-13  9.8341E-13  3.5650E-12  1.9443E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    9.074972 -122.519885    0.470974    0.140273   -0.878151  2456402.058538
# Heliocentric elements and errors
Epoch:              2456400.5000  =  2013/04/18
Mean Anomaly:           10.88889 +/-     0.122
Argument of Peri:       45.17134 +/-     0.169
Long of Asc Node:      177.13858 +/-     0.003
Inclination:            10.22477 +/-     0.000
Eccentricity:         0.14672101 +/-    0.0002
Semi-Major Axis:     39.40577333 +/-    0.0045
Time of Perihelion: 2453667.6284 +/-      30.7
Perihelion:          33.62411853 +/-    0.0074
Aphelion:            45.18742814 +/-    0.0081
Period (y)              247.3705 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -18.33276312 +/-    0.0003
Ecliptic Y          -27.87814457 +/-    0.0005
Ecliptic Z            5.18731740 +/-    0.0001
Ecliptic XDOT         0.00260015 +/-    0.0000
Ecliptic YDOT        -0.00177999 +/-    0.0000
Ecliptic ZDOT         0.00029725 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.76669084 +/-    0.0005
Geocenter to KBO     32.88739237 +/-    0.0006
# Hcoef:  9.04

The following table shows the complete astrometric record for 13JA65. 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 (13JA65) followed by the observatory code and reference code for the source of the astrometry.

2013 04  19.55776  15 49 10.318  -10 44 54.50  24.6r 13JA65    568  C~1XRe      
2013 05  04.43329  15 47 53.496  -10 38 39.80  24.1r 13JA65    568  C~1XRe      
2013 05  04.44379  15 47 53.461  -10 38 39.62        13JA65    568  C~1XRe      
2013 05  07.43599  15 47 36.868  -10 37 27.77  24.2r 13JA65    568  C~1XRe      
2013 05  07.48020  15 47 36.618  -10 37 26.69  23.9r 13JA65    568  C~1XRe      
2013 05  07.52039  15 47 36.397  -10 37 25.73  24.3r 13JA65    568  C~1XRe      
2013 05  09.48057  15 47 25.404  -10 36 39.69  24.1r 13JA65    568  C~1XRe      
2013 05  10.48774  15 47 19.725  -10 36 16.30  24.1r 13JA65    568  C~1XRe      
2013 06  01.40276  15 45 14.929  -10 28 57.00  24.2r 13JA65    568  C~1XRe      
2013 06  01.40895  15 45 14.917  -10 28 56.61        13JA65    568  C~1XRe      
2013 06  02.40261  15 45 09.391  -10 28 40.64  24.2r 13JA65    568  C~1XRe      
2013 06  06.37184  15 44 47.649  -10 27 39.68  24.0r 13JA65    568  C~1XRe      
2013 07  02.32424  15 42 45.336  -10 23 45.96  23.9r 13JA65    568  C~1XRe      
2013 07  03.36215  15 42 41.403  -10 23 43.15  24.1r 13JA65    568  C~1XRe      
2014 02  24.63659  15 59 12.187  -11 20 27.39        13JA65    568  C~1XRe      
2014 02  28.61319  15 59 14.891  -11 19 21.95        13JA65    568  C~1XRe      
2014 03  06.54079  15 59 15.354  -11 17 34.76        13JA65    568  C~1XRe      
2014 04  04.50472  15 58 19.740  -11 06 44.87  24.1r 13JA65    568  C~1XRe      
2014 04  04.56390  15 58 19.549  -11 06 43.30        13JA65    568  C~1XRe      
2014 04  04.57011  15 58 19.509  -11 06 42.70  24.3r 13JA65    568  C~1XRe      
2014 04  30.40923  15 56 24.732  -10 55 58.65  24.1r 13JA65    568  C~1XRe      
2014 04  30.46055  15 56 24.457  -10 55 57.21  24.3r 13JA65    568  C~1XRe      
2014 04  30.51229  15 56 24.166  -10 55 56.04  23.9r 13JA65    568  C~1XRe      
2014 05  05.46203  15 55 57.631  -10 53 57.89  24.5r 13JA65    568  C~1XRe      
2014 05  06.40386  15 55 52.468  -10 53 36.23  24.1r 13JA65    568  C~1XRe      
2014 05  06.47074  15 55 52.089  -10 53 34.58  24.0r 13JA65    568  C~1XRe      
2014 05  06.54679  15 55 51.661  -10 53 32.89  24.1r 13JA65    568  C~1XRe      
2014 06  02.45329  15 53 18.720  -10 44 37.30  24.3r 13JA65    568  C~1XRe      
2014 07  18.34104  15 49 57.739  -10 39 57.91  24.1r 13JA65    568  C~1XRe      
2015 04  20.54525  16 05 22.012  -11 14 44.88  24.1r 13JA65    568  C~1XRe      
2015 04  20.62472  16 05 21.626  -11 14 42.85  24.3r 13JA65    568  C~1XRe      

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    -0.18       0.00     0.02
  2   0.0407  -1186.79    -0.06     118.64    -0.11
  3   0.0408  -1187.33     0.29     118.71    -0.11
  4   0.0489  -1441.76    -0.10     135.30    -0.08
  5   0.0491  -1445.59    -0.09     135.54    -0.04
  6   0.0492  -1448.98     0.02     135.77    -0.01
  7   0.0545  -1617.21    -0.06     145.20    -0.01
  8   0.0573  -1704.04    -0.01     149.68     0.06
  9   0.1173  -3596.25    -0.15     173.50    -0.06
 10   0.1173  -3596.51     0.12     173.84     0.29
 11   0.1200  -3679.56     0.08     171.42     0.03
 12   0.1309  -4005.92     0.12     160.01    -0.06
 13   0.2020  -5818.22     0.02     -12.49     0.12
 14   0.2048  -5875.46    -0.01     -22.68     0.01
 15   0.8517   9117.77     0.22    -191.09     0.05
 16   0.8626   9143.00     0.07    -118.71     0.06
 17   0.8788   9127.18     0.08     -12.36    -0.10
 18   0.9581   8189.06    -0.22     451.72    -0.10
 19   0.9583   8185.98     0.02     452.67     0.06
 20   0.9583   8185.28 (  -0.33)    453.13 (   0.44)
 21   1.0290   6395.28     0.05     726.08    -0.17
 22   1.0292   6391.01     0.01     726.63     0.03
 23   1.0293   6386.57    -0.16     726.87    -0.09
 24   1.0429   5979.22     0.08     759.45     0.28
 25   1.0454   5900.24     0.01     764.47    -0.06
 26   1.0456   5894.43    -0.08     764.90     0.03
 27   1.0458   5887.90    -0.09     765.21    -0.06
 28   1.1195   3570.92     0.00     807.65     0.02
 29   1.2451    617.76     0.04     441.41     0.05
 30   2.0013  14386.53     0.12    1272.77    -0.03
 31   2.0016  14380.52    -0.12    1273.59     0.01

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.

13JA65    quality flag:3

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

axisobj        39.271    39.287    39.255
ecceobj         0.144     0.144     0.143
incobj         10.244    10.244    10.244
qmin           32.751    32.784    32.792
qmax           46.615    46.695    46.562
amean          39.457    39.457    39.458
amin           39.052    39.028    39.056
amax           39.913    39.917    39.894
emean           0.147     0.150     0.145
emin            0.125     0.128     0.126
emax            0.168     0.170     0.168
imean          10.506    10.232    10.593
imin            9.572     9.473     9.542
imax           11.273    11.025    11.452
excite_mean     0.234     0.233     0.235
fracstop        1.000     1.000     1.000
cjmean          2.990     2.991     2.990

libcent 0       181.6     179.9     180.2
libamp  0        78.1      86.7      69.6
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       180.7     182.7     184.0
kozaiamp        179.9     180.0     180.0