Orbit Fit and Astrometric record for 13YJ151

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: 13YJ151   
# Created Fri Oct 20 01:38:23 2017
# Orbit generated from Bernstein formalism
# Fitting   36 observations of   36
# Arc:   2.28y
# First observation: 2012/10/18
#  Last observation: 2015/01/28
Preliminary a, adot, b, bdot, g, gdot:
  -0.000023   0.023485  -0.000012  -0.015160   0.024300   0.000000
# Chi-squared of fit:    12.79 DOF:   66 RMS:  0.11
# Min/Max residuals:    -0.26    0.35
# Exact a, adot, b, bdot, g, gdot:
  1.500788E-05  2.315648E-02 -9.498977E-06 -1.496790E-02  2.397996E-02  3.826344E-03
# Covariance matrix:
  3.0389E-13  3.8518E-14  4.1696E-15 -7.1679E-14  2.6482E-13  1.9309E-12
  3.8518E-14  9.1557E-13  1.5868E-13 -6.5613E-13  9.3105E-13  1.8393E-11
  4.1696E-15  1.5868E-13  2.3335E-13 -2.3052E-13  1.4371E-13  3.6917E-12
 -7.1679E-14 -6.5613E-13 -2.3052E-13  5.8149E-13 -6.6882E-13 -1.4581E-11
  2.6482E-13  9.3105E-13  1.4371E-13 -6.6882E-13  1.1726E-12  1.8641E-11
  1.9309E-12  1.8393E-11  3.6917E-12 -1.4581E-11  1.8641E-11  4.0972E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    8.832413  110.768231    0.990399    0.012271   -0.078649  2456219.102438
# Heliocentric elements and errors
Epoch:              2456210.5000  =  2012/10/10
Mean Anomaly:            7.81780 +/-     0.040
Argument of Peri:      141.56194 +/-     0.122
Long of Asc Node:      302.89824 +/-     0.000
Inclination:            33.57470 +/-     0.001
Eccentricity:         0.44415345 +/-    0.0004
Semi-Major Axis:     73.45080672 +/-    0.0313
Time of Perihelion: 2451217.3418 +/-      25.2
Perihelion:          40.82737716 +/-    0.0338
Aphelion:           106.07423628 +/-    0.0536
Period (y)              629.5106 +/-      0.40
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -13.71257255 +/-    0.0007
Ecliptic Y           38.95722177 +/-    0.0017
Ecliptic Z            6.40264045 +/-    0.0003
Ecliptic XDOT        -0.00272413 +/-    0.0000
Ecliptic YDOT        -0.00028636 +/-    0.0000
Ecliptic ZDOT        -0.00162145 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.79346335 +/-    0.0016
Geocenter to KBO     41.70148554 +/-    0.0019
# Hcoef:  5.50

The following table shows the complete astrometric record for 13YJ151. 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 (13YJ151) followed by the observatory code and reference code for the source of the astrometry.

2012 10  18.60166  07 36 02.325  +30 33 25.07  21.9g 13YJ151   F51  C~1vXA      
2012 10  18.61541  07 36 02.316  +30 33 25.59  21.7r 13YJ151   F51  C~1vXA      
2012 10  18.62760  07 36 02.333  +30 33 25.16  21.8r 13YJ151   F51  C~1vXA      
2012 12  23.54593  07 32 50.298  +30 41 38.39  22.0g 13YJ151   F51  C~1vXA      
2012 12  23.55450  07 32 50.251  +30 41 38.42  21.6w 13YJ151   F51  C~1vXA      
2012 12  23.56894  07 32 50.175  +30 41 38.46  21.8w 13YJ151   F51  C~1vXA      
2013 12  26.38498  07 38 07.897  +29 37 07.23  21.8w 13YJ151   F51  C~1vXA      
2013 12  26.40040  07 38 07.818  +29 37 07.42  21.7w 13YJ151   F51  C~1vXA      
2013 12  26.41585  07 38 07.746  +29 37 07.66  21.9w 13YJ151   F51  C~1vXA      
2014 01  24.30416  07 35 23.834  +29 39 04.44  21.6w 13YJ151   F51  C~1vXA      
2014 01  24.31540  07 35 23.768  +29 39 04.53  21.6w 13YJ151   F51  C~1vXA      
2014 01  24.32665  07 35 23.714  +29 39 04.51  21.6w 13YJ151   F51  C~1vXA      
2014 01  24.33791  07 35 23.652  +29 39 04.42  21.7w 13YJ151   F51  C~1vXA      
2014 02  20.23646  07 33 08.421  +29 37 33.86  21.9w 13YJ151   F51  C~1vXA      
2014 02  20.24770  07 33 08.367  +29 37 33.99  21.7w 13YJ151   F51  C~1vXA      
2014 02  20.25895  07 33 08.302  +29 37 34.12  21.9w 13YJ151   F51  C~1vXA      
2014 02  20.27218  07 33 08.264  +29 37 33.98  21.8w 13YJ151   F51  C~1vXA      
2014 12  26.52800  07 43 30.885  +28 31 58.35  21.4w 13YJ151   F51  C~1vXA      
2014 12  26.54036  07 43 30.816  +28 31 58.22  21.7w 13YJ151   F51  C~1vXA      
2014 12  26.55274  07 43 30.741  +28 31 58.20  21.7w 13YJ151   F51  C~1vXA      
2014 12  26.56510  07 43 30.681  +28 31 58.40  21.5w 13YJ151   F51  C~1vXA      
2015 01  20.33292  07 41 12.441  +28 34 09.18  21.8w 13YJ151   F51  C~1vXA      
2015 01  20.34483  07 41 12.366  +28 34 09.22  21.7w 13YJ151   F51  C~1vXA      
2015 01  20.35678  07 41 12.296  +28 34 09.25  21.8w 13YJ151   F51  C~1vXA      
2015 01  20.36875  07 41 12.228  +28 34 09.31  21.7w 13YJ151   F51  C~1vXA      
2015 01  22.29765  07 41 01.376  +28 34 14.47  21.9w 13YJ151   F51  C~1vXA      
2015 01  22.30952  07 41 01.310  +28 34 14.39  21.9w 13YJ151   F51  C~1vXA      
2015 01  22.32143  07 41 01.243  +28 34 14.49  21.7w 13YJ151   F51  C~1vXA      
2015 01  22.33333  07 41 01.179  +28 34 14.46  21.6w 13YJ151   F51  C~1vXA      
2015 01  28.29740  07 40 28.091  +28 34 24.54  21.6r 13YJ151   F51  C~1vXA      
2015 01  28.30566  07 40 28.045  +28 34 24.16  21.6r 13YJ151   F51  C~1vXA      
2015 01  28.30971  07 40 28.034  +28 34 24.37  21.8r 13YJ151   F51  C~1vXA      
2015 01  28.31787  07 40 27.976  +28 34 24.34  21.4r 13YJ151   F51  C~1vXA      
2015 01  28.32196  07 40 27.965  +28 34 24.47  21.8r 13YJ151   F51  C~1vXA      
2015 01  28.33009  07 40 27.923  +28 34 24.58  21.9r 13YJ151   F51  C~1vXA      
2015 01  28.33417  07 40 27.887  +28 34 24.60  21.8r 13YJ151   F51  C~1vXA      

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     0.05       0.00    -0.08
  2   0.0000     -0.20    -0.19       0.49     0.35
  3   0.0001      0.09     0.05       0.11    -0.09
  4   0.1805  -2525.78    -0.00      89.65    -0.04
  5   0.1806  -2526.38     0.01      89.59    -0.07
  6   0.1806  -2527.36     0.07      89.47    -0.11
  7   1.1876   2168.30    -0.04   -3060.63    -0.01
  8   1.1877   2167.26     0.03   -3060.61     0.08
  9   1.1877   2166.29     0.18   -3060.53     0.24
 10   1.2668     39.01    -0.06   -3298.71    -0.08
 11   1.2668     38.15    -0.10   -3298.77    -0.01
 12   1.2669     37.46     0.03   -3298.90    -0.01
 13   1.2669     36.68     0.08   -3299.12    -0.11
 14   1.3405  -1689.49     0.12   -3670.72    -0.26
 15   1.3406  -1690.21     0.02   -3670.70    -0.06
 16   1.3406  -1691.07    -0.23   -3670.71     0.11
 17   1.3406  -1691.53     0.02   -3670.92     0.11
 18   2.1873   7022.78     0.01   -6176.76     0.23
 19   2.1874   7021.91     0.02   -6177.05     0.01
 20   2.1874   7020.94    -0.07   -6177.25    -0.11
 21   2.1874   7020.12    -0.01   -6177.19     0.02
 22   2.2553   5201.98     0.08   -6370.69    -0.04
 23   2.2553   5201.00    -0.01   -6370.82    -0.06
 24   2.2553   5200.09    -0.03   -6370.95    -0.07
 25   2.2554   5199.19    -0.03   -6371.05    -0.05
 26   2.2606   5057.38    -0.03   -6390.89     0.04
 27   2.2607   5056.54     0.01   -6391.12    -0.07
 28   2.2607   5055.65     0.01   -6391.18    -0.00
 29   2.2607   5054.82     0.07   -6391.36    -0.05
 30   2.2771   4623.41    -0.09   -6457.10     0.14
 31   2.2771   4622.88    -0.02   -6457.58    -0.25
 32   2.2771   4622.70     0.09   -6457.40    -0.02
 33   2.2771   4621.95    -0.07   -6457.56    -0.09
 34   2.2771   4621.78     0.06   -6457.46     0.07
 35   2.2771   4621.22     0.08   -6457.44     0.17
 36   2.2772   4620.75    -0.09   -6457.51     0.16

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.

13YJ151    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        73.591    73.693    73.489
ecceobj         0.445     0.446     0.444
incobj         33.605    33.605    33.606
qmin           39.982    39.239    39.298
qmax          106.939   108.047   107.568
amean          72.674    72.820    72.674
amin           71.791    71.953    71.821
amax           73.828    74.037    73.811
emean           0.439     0.442     0.445
emin            0.428     0.425     0.429
emax            0.449     0.460     0.459
imean          35.060    35.011    34.749
imin           34.725    34.457    34.286
imax           35.362    35.668    35.385
excite_mean     0.723     0.724     0.723
fracstop        1.000     1.000     1.000
cjmean          2.699     2.699     2.700

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       198.4     233.9     182.5
kozaiamp         60.6      90.8      40.8