Orbit Fit and Astrometric record for 13JV63

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: 13JV63    
# Created Tue Dec 12 02:37:58 2017
# Orbit generated from Bernstein formalism
# Fitting   11 observations of   12
# Arc:   2.04y
# First observation: 2013/05/08
#  Last observation: 2015/05/23
Preliminary a, adot, b, bdot, g, gdot:
   0.000030   0.021649  -0.000001  -0.001125   0.023011   0.000000
# Chi-squared of fit:     8.52 DOF:   16 RMS:  0.16
# Min/Max residuals:    -0.29    0.34
# Exact a, adot, b, bdot, g, gdot:
  1.444001E-05  2.184269E-02 -3.085648E-07 -1.133953E-03  2.312656E-02  5.014128E-03
# Covariance matrix:
  4.8656E-13 -1.0071E-12 -1.2309E-14  5.0890E-14  2.7313E-13 -2.0444E-11
 -1.0071E-12  5.2064E-12  6.3309E-14 -3.0438E-13 -4.0538E-13  1.2508E-10
 -1.2309E-14  6.3309E-14  3.2850E-13 -1.9322E-13 -2.1141E-14  1.5827E-12
  5.0890E-14 -3.0438E-13 -1.9322E-13  2.0457E-13  3.5074E-14 -7.5870E-12
  2.7313E-13 -4.0538E-13 -2.1141E-14  3.5074E-14  1.6955E-12 -1.0657E-11
 -2.0444E-11  1.2508E-10  1.5827E-12 -7.5870E-12 -1.0657E-11  3.1164E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
   -7.812437 -120.988603    0.198175   -0.134800   -0.982793  2456420.759308
# Heliocentric elements and errors
Epoch:              2456420.5000  =  2013/05/08
Mean Anomaly:           64.35630 +/-     0.252
Argument of Peri:      158.40333 +/-     0.076
Long of Asc Node:      350.51106 +/-     0.008
Inclination:             8.21631 +/-     0.000
Eccentricity:         0.22604200 +/-    0.0026
Semi-Major Axis:     46.59509489 +/-    0.0705
Time of Perihelion: 2435652.3738 +/-      66.3
Perihelion:          36.06264647 +/-    0.1322
Aphelion:            57.12754331 +/-    0.1483
Period (y)              318.0669 +/-      0.72
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -22.73601847 +/-    0.0012
Ecliptic Y          -37.47072129 +/-    0.0021
Ecliptic Z           -5.87768262 +/-    0.0003
Ecliptic XDOT         0.00191706 +/-    0.0000
Ecliptic YDOT        -0.00181984 +/-    0.0000
Ecliptic ZDOT        -0.00021354 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.22135958 +/-    0.0019
Geocenter to KBO     43.24033553 +/-    0.0024
# Hcoef:  5.98

The following table shows the complete astrometric record for 13JV63. 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 (13JV63) followed by the observatory code and reference code for the source of the astrometry.

2013 05  08.25853  15 39 30.438  -27 33 06.67  22.2r 13JV63    807  C~143e      
2013 05  08.31411  15 39 30.139  -27 33 05.76        13JV63    807  C~143e      
2013 05  08.36487  15 39 29.898  -27 33 05.22        13JV63    807  C~143e      
2013 07  08.01131  15 35 02.314  -27 16 07.04        13JV63    304  C~143e      
2013 07  08.03623  15 35 02.263  -27 16 05.76        13JV63    304  C~143e      
2014 05  01.33258  15 45 29.740  -27 54 59.62        13JV63    304  C~143e      
2014 05  02.34797  15 45 24.865  -27 54 49.26  22.1r 13JV63    304  C~143e      
2014 05  02.39685  15 45 24.628  -27 54 48.62        13JV63    304  C~143e      
2015 05  20.22320  15 49 21.21   -28 10 58.7         13JV63    W84  C~1Tjt      
2015 05  21.26162  15 49 15.94   -28 10 44.4   22.7V 13JV63    W84  C~1Tjt      
2015 05  22.30657  15 49 10.64   -28 10 29.8         13JV63    W84  C~1Tjt      
2015 05  23.21987  15 49 06.05   -28 10 17.2         13JV63    W84  C~1Tjt      

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     0.10       0.00    -0.10
  2   0.0002     -4.08    -0.18      -0.03     0.04
  3   0.0003     -7.32     0.03      -0.25    -0.04
  4   0.1663  -3710.41     0.03     150.64    -0.09
  5   0.1664  -3711.37 (   0.12)    151.72 (   0.81)
  6   0.9804   4944.38     0.29    -205.51    -0.05
  7   0.9831   4879.03    -0.11    -209.57     0.14
  8   0.9833   4875.82    -0.14    -209.64     0.26
  9   2.0314   8146.51     0.34    -482.63     0.03
 10   2.0342   8075.27     0.01    -483.39     0.03
 11   2.0371   8003.58    -0.29    -483.95     0.01
 12   2.0396   7941.51    -0.09    -484.49    -0.23

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.

13JV63    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        46.398    46.603    46.200
ecceobj         0.223     0.230     0.215
incobj          8.230     8.230     8.229
qmin           35.164    34.648    35.382
qmax           58.960    59.933    58.495
amean          46.751    47.013    46.639
amin           46.298    46.579    46.200
amax           47.359    47.647    47.189
emean           0.229     0.241     0.223
emin            0.213     0.220     0.207
emax            0.247     0.261     0.240
imean           8.379     8.385     8.342
imin            7.316     7.144     7.321
imax            9.305     9.510     9.184
excite_mean     0.272     0.282     0.266
fracstop        1.000     1.000     1.000
cjmean          3.043     3.040     3.046

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       179.5     184.6     180.9
kozaiamp        180.0     180.0     180.0