Orbit Fit and Astrometric record for 13JQ65

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: 13JQ65    
# Created Mon Dec 18 02:37:56 2017
# Orbit generated from Bernstein formalism
# Fitting   20 observations of   20
# Arc:   1.95y
# First observation: 2013/04/10
#  Last observation: 2015/03/22
Preliminary a, adot, b, bdot, g, gdot:
  -0.000129   0.025414   0.000006  -0.001165   0.024805   0.000000
# Chi-squared of fit:     4.94 DOF:   34 RMS:  0.09
# Min/Max residuals:    -0.20    0.22
# Exact a, adot, b, bdot, g, gdot:
  1.627283E-05  2.547303E-02 -8.681452E-07 -1.170916E-03  2.504370E-02  2.757838E-03
# Covariance matrix:
  3.0028E-13 -1.9194E-13 -5.8053E-15  3.6798E-15  2.8049E-13  5.8056E-13
 -1.9194E-13  8.3545E-13  3.2064E-15 -3.1204E-14  1.9055E-13  1.8057E-11
 -5.8053E-15  3.2064E-15  1.6071E-13 -1.4404E-13 -1.1049E-14  1.3851E-14
  3.6798E-15 -3.1204E-14 -1.4404E-13  2.3919E-13 -7.4018E-15 -9.2490E-13
  2.8049E-13  1.9055E-13 -1.1049E-14 -7.4018E-15  7.0444E-13  1.0180E-11
  5.8056E-13  1.8057E-11  1.3851E-14 -9.2490E-13  1.0180E-11  5.7577E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    8.197966 -120.402443    0.629612    0.111453   -0.773489  2456393.024908
# Heliocentric elements and errors
Epoch:              2456390.5000  =  2013/04/08
Mean Anomaly:           44.90878 +/-     0.162
Argument of Peri:       51.30339 +/-     0.256
Long of Asc Node:      131.39109 +/-     0.007
Inclination:             8.41680 +/-     0.000
Eccentricity:         0.12123904 +/-    0.0009
Semi-Major Axis:     44.12649457 +/-    0.0122
Time of Perihelion: 2443034.5018 +/-      47.9
Perihelion:          38.77664059 +/-    0.0393
Aphelion:            49.47634854 +/-    0.0402
Period (y)              293.1280 +/-      0.12
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -20.93829612 +/-    0.0007
Ecliptic Y          -34.44073487 +/-    0.0011
Ecliptic Z            5.69379998 +/-    0.0002
Ecliptic XDOT         0.00223530 +/-    0.0000
Ecliptic YDOT        -0.00168208 +/-    0.0000
Ecliptic ZDOT        -0.00008357 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.70621354 +/-    0.0010
Geocenter to KBO     39.93019464 +/-    0.0013
# Hcoef:  8.22

The following table shows the complete astrometric record for 13JQ65. 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 (13JQ65) followed by the observatory code and reference code for the source of the astrometry.

2013 04  10.52413  15 56 45.762  -12 02 56.07  24.5r 13JQ65    568  C~1XRg      
2013 04  10.56492  15 56 45.618  -12 02 55.35  24.0r 13JQ65    568  C~1XRg      
2013 05  07.45588  15 54 52.416  -11 54 47.69  24.2r 13JQ65    568  C~1XRg      
2013 05  07.50007  15 54 52.194  -11 54 46.98  24.2r 13JQ65    568  C~1XRg      
2013 05  07.54026  15 54 51.995  -11 54 46.26  24.0r 13JQ65    568  C~1XRg      
2013 05  09.50053  15 54 42.636  -11 54 13.05  24.3r 13JQ65    568  C~1XRg      
2013 05  10.50767  15 54 37.808  -11 53 56.10  24.7r 13JQ65    568  C~1XRg      
2013 06  04.38901  15 52 36.414  -11 48 01.64  24.5r 13JQ65    568  C~1XRg      
2013 06  06.39243  15 52 26.936  -11 47 39.76  23.9r 13JQ65    568  C~1XRg      
2013 07  02.34516  15 50 38.737  -11 44 51.08  24.6r 13JQ65    568  C~1XRg      
2014 03  06.59120  16 03 39.526  -12 33 44.55  24.1r 13JQ65    568  C~1XRg      
2014 03  07.56585  16 03 39.204  -12 33 32.14  24.0r 13JQ65    568  C~1XRg      
2014 04  30.44035  16 01 13.693  -12 18 48.03  24.0r 13JQ65    568  C~1XRg      
2014 04  30.49188  16 01 13.450  -12 18 47.04  24.0r 13JQ65    568  C~1XRg      
2014 04  30.54366  16 01 13.224  -12 18 45.95  23.5r 13JQ65    568  C~1XRg      
2014 05  05.50954  16 00 50.529  -12 17 21.23  24.0r 13JQ65    568  C~1XRg      
2014 05  06.45103  16 00 46.137  -12 17 05.39  24.3r 13JQ65    568  C~1XRg      
2014 05  06.50198  16 00 45.893  -12 17 04.46  24.1r 13JQ65    568  C~1XRg      
2014 06  02.44941  15 58 34.731  -12 10 34.22  24.1r 13JQ65    568  C~1XRg      
2015 03  22.58694  16 09 06.334  -12 50 57.16  24.1r 13JQ65    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    -0.04       0.00     0.03
  2   0.0001     -2.22    -0.01       0.27     0.00
  3   0.0737  -1728.22     0.08     134.10     0.09
  4   0.0739  -1731.56    -0.03     134.12     0.02
  5   0.0740  -1734.56    -0.10     134.22     0.03
  6   0.0793  -1875.84    -0.04     138.19    -0.07
  7   0.0821  -1948.68     0.21     140.06     0.03
  8   0.1502  -3765.89    -0.03     114.95    -0.01
  9   0.1557  -3906.60     0.08     107.17    -0.06
 10   0.2268  -5496.20    -0.11     -62.31    -0.20
 11   0.9037   6314.64    -0.09    -581.01    -0.06
 12   0.9063   6307.54    -0.08    -569.79     0.22
 13   1.0538   4040.56     0.12    -131.24    -0.10
 14   1.0540   4036.87    -0.02    -130.99    -0.03
 15   1.0541   4033.40     0.10    -130.59     0.19
 16   1.0677   3690.41     0.06    -114.79    -0.05
 17   1.0703   3624.15     0.03    -112.29    -0.04
 18   1.0704   3620.46    -0.00    -112.11     0.03
 19   1.1442   1658.16    -0.12    -120.76     0.05
 20   1.9468  11215.51    -0.01    -651.60    -0.08

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.

13JQ65    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.967    44.005    43.931
ecceobj         0.117     0.119     0.115
incobj          8.415     8.414     8.415
qmin           38.290    38.232    38.374
qmax           50.619    50.765    50.560
amean          44.298    44.344    44.270
amin           43.931    43.977    43.910
amax           44.706    44.740    44.671
emean           0.117     0.119     0.115
emin            0.102     0.104     0.100
emax            0.133     0.135     0.132
imean           7.158     7.151     7.160
imin            6.445     6.431     6.455
imax            7.973     7.970     7.962
excite_mean     0.171     0.172     0.170
fracstop        1.000     1.000     1.000
cjmean          3.070     3.070     3.070

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       180.6     179.9     180.0
kozaiamp        180.0     179.9     179.9