Orbit Fit and Astrometric record for 13JV64

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: 13JV64    
# Created Thu Oct 19 01:38:16 2017
# Orbit generated from Bernstein formalism
# Fitting   25 observations of   25
# Arc:   1.27y
# First observation: 2013/04/10
#  Last observation: 2014/07/18
Preliminary a, adot, b, bdot, g, gdot:
  -0.000009   0.013725  -0.000009   0.008044   0.019093   0.000000
# Chi-squared of fit:    12.52 DOF:   44 RMS:  0.13
# Min/Max residuals:    -0.24    0.39
# Exact a, adot, b, bdot, g, gdot:
  1.069381E-05  1.365304E-02  6.205166E-06  7.942834E-03  1.903372E-02 -9.563069E-03
# Covariance matrix:
  3.4203E-13  2.7264E-14 -3.1654E-14  2.7206E-13  4.7319E-13  2.7754E-11
  2.7264E-14  4.3132E-13 -3.4697E-14  3.1322E-13  4.2475E-13  3.2101E-11
 -3.1654E-14 -3.4697E-14  1.5135E-13 -2.0046E-13 -7.8158E-14 -5.7649E-12
  2.7206E-13  3.1322E-13 -2.0046E-13  7.4858E-13  6.7619E-13  5.2288E-11
  4.7319E-13  4.2475E-13 -7.8158E-14  6.7619E-13  1.1407E-12  6.9024E-11
  2.7754E-11  3.2101E-11 -5.7649E-12  5.2288E-11  6.9024E-11  5.3613E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    8.230509 -121.103034    0.620009    0.112986   -0.780987  2456393.024908
# Heliocentric elements and errors
Epoch:              2456390.5000  =  2013/04/08
Mean Anomaly:          326.71041 +/-     0.386
Argument of Peri:      114.34830 +/-     0.061
Long of Asc Node:      224.75229 +/-     0.001
Inclination:            31.45137 +/-     0.002
Eccentricity:         0.57364407 +/-    0.0043
Semi-Major Axis:     72.60553534 +/-    0.5287
Time of Perihelion: 2477286.2957 +/-      81.0
Perihelion:          30.95580066 +/-    0.3826
Aphelion:           114.25527001 +/-    0.8876
Period (y)              618.6753 +/-      6.76
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -27.79799461 +/-    0.0015
Ecliptic Y          -44.87517390 +/-    0.0025
Ecliptic Z            7.52153525 +/-    0.0004
Ecliptic XDOT         0.00246301 +/-    0.0000
Ecliptic YDOT         0.00029158 +/-    0.0000
Ecliptic ZDOT         0.00093397 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   53.32057042 +/-    0.0022
Geocenter to KBO     52.53834144 +/-    0.0029
# Hcoef:  7.40

The following table shows the complete astrometric record for 13JV64. 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 (13JV64) followed by the observatory code and reference code for the source of the astrometry.

2013 04  10.52413  15 54 01.029  -11 52 22.48  24.2r 13JV64    568  C~1XRe      
2013 04  10.56492  15 54 00.903  -11 52 21.69  24.5r 13JV64    568  C~1XRe      
2013 04  19.57778  15 53 33.558  -11 49 23.56  24.1r 13JV64    568  C~1XRe      
2013 05  07.45588  15 52 30.505  -11 43 36.52  24.7r 13JV64    568  C~1XRe      
2013 05  07.50007  15 52 30.337  -11 43 35.57  24.6r 13JV64    568  C~1XRe      
2013 05  07.54026  15 52 30.189  -11 43 34.72  24.4r 13JV64    568  C~1XRe      
2013 05  09.50053  15 52 22.782  -11 42 58.36  24.6r 13JV64    568  C~1XRe      
2013 05  10.50767  15 52 18.946  -11 42 39.66  24.7r 13JV64    568  C~1XRe      
2013 06  04.38901  15 50 43.143  -11 35 48.80  24.4r 13JV64    568  C~1XRe      
2013 06  06.39243  15 50 35.660  -11 35 20.85        13JV64    568  C~1XRe      
2013 07  02.34516  15 49 09.868  -11 30 48.19        13JV64    568  C~1XRe      
2013 07  03.38213  15 49 07.036  -11 30 41.75  24.5r 13JV64    568  C~1XRe      
2014 02  24.63659  15 58 33.603  -11 48 34.82        13JV64    568  C~1XRe      
2014 02  28.61319  15 58 34.281  -11 47 38.06        13JV64    568  C~1XRe      
2014 04  04.50472  15 57 49.863  -11 37 21.50  25.1r 13JV64    568  C~1XRe      
2014 04  30.40923  15 56 29.967  -11 28 45.52  24.1r 13JV64    568  C~1XRe      
2014 04  30.46055  15 56 29.764  -11 28 44.39  24.5r 13JV64    568  C~1XRe      
2014 05  05.46203  15 56 11.446  -11 27 07.83  24.6r 13JV64    568  C~1XRe      
2014 05  06.40386  15 56 07.901  -11 26 49.72  24.0r 13JV64    568  C~1XRe      
2014 05  06.47074  15 56 07.647  -11 26 48.63  24.3r 13JV64    568  C~1XRe      
2014 05  06.54679  15 56 07.345  -11 26 47.01  24.5r 13JV64    568  C~1XRe      
2014 05  22.48569  15 55 05.775  -11 22 00.86        13JV64    568  C~1XRe      
2014 05  24.46712  15 54 57.995  -11 21 28.07  24.2r 13JV64    568  C~1XRe      
2014 07  01.36763  15 52 43.358  -11 13 50.48  24.7r 13JV64    568  C~1XRe      
2014 07  18.34104  15 52 01.946  -11 12 31.94  24.7r 13JV64    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     0.13       0.00     0.08
  2   0.0001     -1.97     0.02       0.38     0.04
  3   0.0248   -431.88    -0.21      90.16    -0.19
  4   0.0737  -1410.15    -0.03     234.20    -0.13
  5   0.0739  -1412.77    -0.04     234.60    -0.01
  6   0.0740  -1415.07     0.03     234.97     0.10
  7   0.0793  -1529.09     0.11     247.52    -0.08
  8   0.0821  -1588.12     0.05     253.89    -0.01
  9   0.1502  -3050.86    -0.01     356.83     0.04
 10   0.1557  -3164.27     0.01     360.73     0.03
 11   0.2268  -4454.67    -0.24     357.87     0.39
 12   0.2296  -4496.73     0.18     355.24    -0.21
 13   0.8764   3867.23    -0.10    1055.09     0.03
 14   0.8873   3865.28    -0.08    1112.69     0.05
 15   0.9828   3099.49     0.05    1581.42    -0.07
 16   1.0538   1843.67     0.16    1842.83    -0.05
 17   1.0539   1840.51    -0.08    1843.31     0.03
 18   1.0676   1557.00     0.39    1881.75    -0.00
 19   1.0702   1502.25    -0.02    1888.62     0.08
 20   1.0704   1498.37     0.03    1888.91    -0.09
 21   1.0706   1493.69    -0.17    1889.57     0.04
 22   1.1142    548.54     0.02    1980.56    -0.05
 23   1.1196    429.80    -0.18    1988.70    -0.13
 24   1.2234  -1602.71    -0.09    2019.97     0.03
 25   1.2699  -2214.93     0.06    1967.96     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.

13JV64    quality flag:2

Type:       SCATNEAR  CENTAURS  SCATNEAR

axisobj        72.675    74.253    71.194
ecceobj         0.576     0.588     0.564
incobj         31.523    31.523    31.524
qmin           30.474    29.663    30.645
qmax          118.869   121.405   115.104
amean          73.014    74.053    71.593
amin           71.606    71.242    70.455
amax           75.952    76.346    73.251
emean           0.561     0.575     0.554
emin            0.544     0.547     0.536
emax            0.582     0.598     0.573
imean          33.134    32.914    32.775
imin           31.993    31.519    31.785
imax           34.381    34.319    33.683
excite_mean     0.784     0.791     0.775
fracstop        1.000     1.000     1.000
cjmean          2.569     2.560     2.578

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       235.0     223.6     226.4
kozaiamp        111.0     180.0     109.1