Orbit Fit and Astrometric record for 11XJ4

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: 11XJ4     
# Created Tue Oct 24 01:37:58 2017
# Orbit generated from Bernstein formalism
# Fitting   33 observations of   33
# Arc:   3.04y
# First observation: 2011/03/10
#  Last observation: 2014/03/24
Preliminary a, adot, b, bdot, g, gdot:
  -0.000403   0.031082   0.000068  -0.005967   0.026837   0.000000
# Chi-squared of fit:    21.56 DOF:   60 RMS:  0.14
# Min/Max residuals:    -0.30    0.33
# Exact a, adot, b, bdot, g, gdot:
  1.736702E-05  3.096491E-02 -2.355421E-06 -5.945580E-03  2.788890E-02  3.080653E-04
# Covariance matrix:
  2.4910E-13 -2.3966E-13 -1.3542E-14  3.1500E-14 -6.2022E-14 -1.7150E-12
 -2.3966E-13  4.4468E-13  3.5317E-14 -7.8989E-14  8.0468E-14  4.2768E-12
 -1.3542E-14  3.5317E-14  1.8298E-13 -8.4568E-14  9.2802E-16  3.8134E-13
  3.1500E-14 -7.8989E-14 -8.4568E-14  6.0213E-14 -1.1772E-14 -8.4684E-13
 -6.2022E-14  8.0468E-14  9.2802E-16 -1.1772E-14  2.5160E-13  7.1305E-13
 -1.7150E-12  4.2768E-12  3.8134E-13 -8.4684E-13  7.1305E-13  4.5805E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.741573  168.869338   -0.008355   -0.047714   -0.995998  2455630.913096
# Heliocentric elements and errors
Epoch:              2455630.5000  =  2011/03/10
Mean Anomaly:            2.55469 +/-     0.051
Argument of Peri:      190.04201 +/-     0.077
Long of Asc Node:      335.27748 +/-     0.001
Inclination:            11.20467 +/-     0.000
Eccentricity:         0.18923826 +/-    0.0001
Semi-Major Axis:     45.43321045 +/-    0.0047
Time of Perihelion: 2454836.7317 +/-      15.9
Perihelion:          36.83550895 +/-    0.0053
Aphelion:            54.03091194 +/-    0.0067
Period (y)              306.2445 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -36.11782696 +/-    0.0006
Ecliptic Y            7.09747272 +/-    0.0001
Ecliptic Z           -1.71514284 +/-    0.0000
Ecliptic XDOT        -0.00059050 +/-    0.0000
Ecliptic YDOT        -0.00297618 +/-    0.0000
Ecliptic ZDOT        -0.00058444 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.84851772 +/-    0.0006
Geocenter to KBO     35.85655962 +/-    0.0006
# Hcoef:  7.04

The following table shows the complete astrometric record for 11XJ4. 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 (11XJ4) followed by the observatory code and reference code for the source of the astrometry.

2011 03  10.41233  11 14 46.596  +01 52 50.32  22.4r 11XJ4     F51  C~1w3o      
2011 03  30.36437  11 13 07.300  +02 02 25.87  22.9w 11XJ4     F51  C~1w3o      
2011 03  30.37765  11 13 07.237  +02 02 26.19  23.3w 11XJ4     F51  C~1w3o      
2011 03  30.39210  11 13 07.166  +02 02 26.59  22.9w 11XJ4     F51  C~1w3o      
2011 03  30.40537  11 13 07.109  +02 02 27.10  23.1w 11XJ4     F51  C~1w3o      
2011 12  06.62930  11 24 51.877  +00 37 47.28  23.6w 11XJ4     F51  C~1w3o      
2011 12  06.63395  11 24 51.877  +00 37 47.36  23.3w 11XJ4     F51  C~1w3o      
2011 12  06.63860  11 24 51.884  +00 37 47.31  23.3w 11XJ4     F51  C~1w3o      
2011 12  06.64324  11 24 51.889  +00 37 47.17  23.7w 11XJ4     F51  C~1w3o      
2012 03  20.36416  11 19 51.555  +00 57 43.88  23.1w 11XJ4     F51  C~1w3o      
2012 03  20.37878  11 19 51.490  +00 57 44.72  22.8w 11XJ4     F51  C~1w3o      
2012 11  25.61703  11 30 16.718  -00 16 38.94  22.2w 11XJ4     F51  C~1w3o      
2013 02  19.240486 11 28 17.97   -00 16 11.8   22.9r 11XJ4     309  C~2HOb      
2013 02  19.245173 11 28 17.95   -00 16 11.7   23.0r 11XJ4     309  C~2HOb      
2013 02  19.249838 11 28 17.92   -00 16 11.5   22.9r 11XJ4     309  C~2HOb      
2013 02  19.259201 11 28 17.88   -00 16 11.3   23.0r 11XJ4     309  C~2HOb      
2013 03  06.41366  11 27 03.141  -00 09 29.90  22.6w 11XJ4     F51  C~1w3o      
2013 03  06.42827  11 27 03.034  -00 09 29.27  22.6w 11XJ4     F51  C~1w3o      
2013 03  06.44290  11 27 02.964  -00 09 28.82  22.4w 11XJ4     F51  C~1w3o      
2013 03  06.45752  11 27 02.906  -00 09 28.78  22.3w 11XJ4     F51  C~1w3o      
2013 04  05.33113  11 24 35.021  +00 05 00.36  22.2w 11XJ4     F51  C~1w3o      
2013 04  05.34550  11 24 34.984  +00 05 00.75  22.3w 11XJ4     F51  C~1w3o      
2013 04  05.35659  11 24 34.931  +00 05 01.16  22.4w 11XJ4     F51  C~1w3o      
2013 04  05.35988  11 24 34.896  +00 05 01.32  22.4w 11XJ4     F51  C~1w3o      
2013 04  05.37100  11 24 34.848  +00 05 01.67  22.2w 11XJ4     F51  C~1w3o      
2014 02  28.45388  11 33 33.327  -01 12 36.70  22.7w 11XJ4     F51  C~1w3o      
2014 02  28.46595  11 33 33.277  -01 12 36.46  22.6w 11XJ4     F51  C~1w3o      
2014 02  28.47802  11 33 33.202  -01 12 36.10  22.6w 11XJ4     F51  C~1w3o      
2014 02  28.49011  11 33 33.145  -01 12 35.91  22.5w 11XJ4     F51  C~1w3o      
2014 03  24.40194  11 31 32.284  -01 01 09.37  22.4w 11XJ4     F51  C~1w3o      
2014 03  24.41424  11 31 32.206  -01 01 08.93  22.5w 11XJ4     F51  C~1w3o      
2014 03  24.42652  11 31 32.153  -01 01 08.45  22.3w 11XJ4     F51  C~1w3o      
2014 03  24.43884  11 31 32.064  -01 01 08.15  22.7w 11XJ4     F51  C~1w3o      

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    -0.21
  2   0.0546  -1595.17     0.00     -51.25    -0.01
  3   0.0547  -1596.16     0.03     -51.32    -0.05
  4   0.0547  -1597.30     0.01     -51.37    -0.07
  5   0.0547  -1598.29     0.05     -51.23     0.10
  6   0.7426  10123.10     0.11    -595.73    -0.13
  7   0.7426  10123.07    -0.05    -595.66    -0.01
  8   0.7426  10123.19    -0.06    -595.67     0.02
  9   0.7426  10123.31    -0.07    -595.77    -0.04
 10   1.0293   5502.78    -0.20   -1256.80    -0.11
 11   1.0293   5501.55    -0.23   -1256.40     0.33
 12   1.7145  15908.94     0.32   -1697.49    -0.17
 13   1.9489  14250.50     0.06   -2370.80     0.08
 14   1.9489  14250.18     0.10   -2370.83     0.08
 15   1.9489  14249.69    -0.04   -2370.82     0.12
 16   1.9489  14249.05     0.03   -2370.87     0.12
 17   1.9904  13055.03     0.22   -2439.80     0.10
 18   1.9905  13053.30    -0.30   -2439.85     0.12
 19   1.9905  13052.16    -0.23   -2439.84     0.18
 20   1.9905  13051.34     0.16   -2440.15    -0.06
 21   2.0723  10661.80    -0.12   -2507.41    -0.15
 22   2.0724  10661.13     0.29   -2507.27     0.01
 23   2.0724  10660.24     0.23   -2507.20     0.10
 24   2.0724  10659.69    -0.07   -2507.26     0.04
 25   2.0724  10658.89    -0.04   -2507.22     0.10
 26   2.9734  19968.35    -0.17   -3644.13    -0.09
 27   2.9735  19967.55     0.01   -3644.20    -0.10
 28   2.9735  19966.37    -0.20   -3644.31    -0.15
 29   2.9735  19965.50    -0.10   -3644.47    -0.25
 30   3.0390  18012.11     0.29   -3720.02     0.01
 31   3.0390  18010.86     0.04   -3720.07    -0.01
 32   3.0391  18009.93     0.13   -3719.94     0.15
 33   3.0391  18008.57    -0.21   -3720.18    -0.07

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.

11XJ4    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        45.500    45.515    45.485
ecceobj         0.190     0.190     0.190
incobj         11.202    11.202    11.202
qmin           35.901    35.859    35.960
qmax           56.026    56.046    55.881
amean          45.691    45.710    45.632
amin           45.298    45.307    45.227
amax           46.182    46.183    46.094
emean           0.197     0.197     0.195
emin            0.182     0.182     0.179
emax            0.214     0.214     0.212
imean          11.833    11.833    11.831
imin           11.026    11.012    11.025
imax           12.540    12.548    12.527
excite_mean     0.284     0.285     0.283
fracstop        1.000     1.000     1.000
cjmean          3.022     3.022     3.022

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       181.3     182.0     181.3
kozaiamp        180.0     179.9     180.0