Orbit Fit and Astrometric record for 469420

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: 469420    
# Created Wed Dec 13 02:36:49 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   48 observations of   48
# Arc:  13.26y
# First observation: 2001/12/10
#  Last observation: 2015/03/16
# Chi-squared of fit:    61.28 DOF:   90 RMS:  0.20
# Min/Max residuals:    -0.42    0.54
# Exact a, adot, b, bdot, g, gdot:
  1.765138E-05  3.609480E-02  1.511229E-06 -1.484480E-03  3.050586E-02 -2.603432E-03
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.167104   99.729707    0.355759    0.018501   -0.911890  2452253.914273
# Heliocentric elements and errors
Epoch:              2452254.5000  =  2001/12/11
Mean Anomaly:          343.68713 +/-     0.000
Argument of Peri:      180.17738 +/-     0.000
Long of Asc Node:      305.00984 +/-     0.000
Inclination:             2.59883 +/-     0.000
Eccentricity:         0.22427228 +/-    0.0000
Semi-Major Axis:     42.63170491 +/-    0.0000
Time of Perihelion: 2456861.5754 +/-       0.0
Perihelion:          33.07059509 +/-    0.0000
Aphelion:            52.19281473 +/-    0.0000
Period (y)              278.3603 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           -5.34112967 +/-    0.0000
Ecliptic Y           33.26693931 +/-    0.0000
Ecliptic Z            0.66772763 +/-    0.0000
Ecliptic XDOT        -0.00316242 +/-    0.0000
Ecliptic YDOT        -0.00077508 +/-    0.0000
Ecliptic ZDOT        -0.00013775 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.69964639 +/-    0.0000
Geocenter to KBO     32.78065916 +/-    0.0000
# Hcoef:  7.51

The following table shows the complete astrometric record for 469420. 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 (469420) followed by the observatory code and reference code for the source of the astrometry.

2001 12  10.41353  06 42 43.04   +24 14 47.1         469420    568  Ce7056      
2001 12  10.43941  06 42 42.89   +24 14 47.5         469420    568  Ce7056      
2001 12  10.46266  06 42 42.74   +24 14 47.6         469420    568  Ce7056      
2002 01  08.56257  06 39 36.04   +24 17 31.9   22.5R 469420    568  Ce7056      
2002 01  08.59063  06 39 35.84   +24 17 32.2   22.5R 469420    568  Ce7056      
2002 02  05.43647  06 36 53.95   +24 19 11.4   23.0R 469420    568  Cf2430      
2002 02  05.48646  06 36 53.71   +24 19 11.5         469420    568  Cf2430      
2002 02  06.41164  06 36 49.25   +24 19 13.4         469420    568  Cf2430      
2002 11  28.38625  06 52 53.08   +23 58 05.5         469420    695  Ch1594      
2002 11  28.44119  06 52 52.80   +23 58 05.6   23.3R 469420    695  Ch1594      
2002 12  04.53405  06 52 20.87   +23 58 47.0         469420    695  Ch1594      
2003 04  29.26552  06 45 35.59   +24 02 05.2   22.2R 469420    568  Ci0016      
2003 04  30.26279  06 45 40.52   +24 01 57.3         469420    568  Ci0016      
2003 11  24.42279  07 02 13.86   +23 40 02.6   22.3R 469420    695  Cj3668      
2003 11  24.51650  07 02 13.45   +23 40 03.3         469420    695  Cj3668      
2008 11  11.61555  07 47 28.18   +21 41 12.9   24.6R 469420    250  S~06AS      
2008 11  11.62249  07 47 28.17   +21 41 13.0         469420    250  S~06AS      
2008 11  11.62874  07 47 28.17   +21 41 13.0         469420    250  S~06AS      
2008 11  11.63569  07 47 28.15   +21 41 13.0         469420    250  S~06AS      
2011 01  30.29461  07 58 36.728  +20 58 52.98  22.6w 469420    F51  C~1vV7      
2011 01  30.30913  07 58 36.660  +20 58 53.35  22.8w 469420    F51  C~1vV7      
2011 01  30.32420  07 58 36.538  +20 58 53.34  22.9w 469420    F51  C~1vV7      
2012 12  23.56619  08 20 06.745  +19 41 39.13  22.9w 469420    F51  C~1vV7      
2012 12  23.58063  08 20 06.670  +19 41 39.67  22.8w 469420    F51  C~1vV7      
2012 12  23.60942  08 20 06.515  +19 41 40.00  22.8w 469420    F51  C~1vV7      
2013 01  17.48165  08 17 40.558  +19 49 17.06  22.1w 469420    F51  C~1vV7      
2013 01  17.49700  08 17 40.483  +19 49 17.30  22.0w 469420    F51  C~1vV7      
2013 01  17.52779  08 17 40.300  +19 49 17.92  22.3w 469420    F51  C~1vV7      
2013 02  10.41914  08 15 12.547  +19 56 50.53  22.9w 469420    F51  C~1vV7      
2013 02  10.43460  08 15 12.476  +19 56 50.48  22.8w 469420    F51  C~1vV7      
2013 02  10.45010  08 15 12.365  +19 56 50.89  22.9w 469420    F51  C~1vV7      
2013 02  10.46556  08 15 12.270  +19 56 51.14  22.8w 469420    F51  C~1vV7      
2013 03  13.16536  08 12 45.99   +20 04 00.6   22.0R 469420    695  C~0ucs      
2013 03  14.14946  08 12 42.71   +20 04 10.0         469420    695  C~0ucs      
2013 03  14.23944  08 12 42.41   +20 04 10.4         469420    695  C~0ucs      
2015 01  14.37352  08 35 36.279  +18 35 09.78  22.6w 469420    F51  C~1vV7      
2015 01  14.37841  08 35 36.253  +18 35 09.88  22.8w 469420    F51  C~1vV7      
2015 01  14.38586  08 35 36.217  +18 35 10.02  22.6w 469420    F51  C~1vV7      
2015 01  14.39070  08 35 36.195  +18 35 10.01  22.4w 469420    F51  C~1vV8      
2015 01  14.39809  08 35 36.156  +18 35 10.15  22.6w 469420    F51  C~1vV8      
2015 01  14.41521  08 35 36.044  +18 35 10.80  22.7w 469420    F51  C~1vV8      
2015 01  16.53065  08 35 23.204  +18 35 55.33  22.7w 469420    F51  C~1vV8      
2015 01  16.54284  08 35 23.146  +18 35 55.77  22.5w 469420    F51  C~1vV8      
2015 01  16.55512  08 35 23.052  +18 35 55.88  22.6w 469420    F51  C~1vV8      
2015 01  16.56741  08 35 22.976  +18 35 56.24  22.5w 469420    F51  C~1vV8      
2015 03  16.37025  08 30 02.916  +18 54 13.24  22.8w 469420    F51  C~1vV8      
2015 03  16.38255  08 30 02.883  +18 54 13.51  22.8w 469420    F51  C~1vV8      
2015 03  16.39482  08 30 02.819  +18 54 13.54  22.7w 469420    F51  C~1vV8      

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    -0.15       0.00     0.47
  2   0.0001      0.00     0.39       0.00    -0.25
  3   0.0001      0.00     0.27       0.00    -0.30
  4   0.0798      0.00     0.20       0.00    -0.15
  5   0.0799      0.00    -0.06       0.00     0.03
  6   0.1561      0.00    -0.06       0.00    -0.08
  7   0.1563      0.00     0.04       0.00    -0.06
  8   0.1588      0.00    -0.09       0.00    -0.06
  9   0.9664      0.00    -0.42       0.00     0.52
 10   0.9665      0.00    -0.42       0.00     0.25
 11   0.9832      0.00    -0.23       0.00     0.35
 12   1.3822      0.00     0.21       0.00    -0.04
 13   1.3849      0.00     0.54       0.00    -0.21
 14   1.9549      0.00    -0.29       0.00     0.28
 15   1.9551      0.00    -0.09       0.00     0.35
 16   6.9218      0.00    -0.02       0.00    -0.16
 17   6.9219      0.00     0.03       0.00    -0.09
 18   6.9219      0.00     0.20       0.00    -0.12
 19   6.9219      0.00     0.09       0.00    -0.16
 20   9.1386      0.00    -0.04       0.00     0.11
 21   9.1387      0.00     0.31       0.00     0.24
 22   9.1387      0.00    -0.09       0.00    -0.02
 23  11.0367      0.00     0.14       0.00    -0.37
 24  11.0367      0.00     0.17       0.00    -0.07
 25  11.0368      0.00     0.13       0.00    -0.20
 26  11.1049      0.00    -0.24       0.00     0.04
 27  11.1050      0.00     0.11       0.00    -0.02
 28  11.1050      0.00     0.32       0.00     0.01
 29  11.1704      0.00    -0.09       0.00     0.23
 30  11.1705      0.00     0.23       0.00    -0.09
 31  11.1705      0.00    -0.05       0.00     0.05
 32  11.1706      0.00    -0.10       0.00     0.03
 33  11.2546      0.00    -0.05       0.00     0.18
 34  11.2573      0.00     0.03       0.00     0.41
 35  11.2576      0.00     0.09       0.00    -0.01
 36  13.0950      0.00    -0.18       0.00     0.00
 37  13.0950      0.00    -0.12       0.00    -0.00
 38  13.0951      0.00     0.02       0.00    -0.02
 39  13.0951      0.00     0.13       0.00    -0.13
 40  13.0951      0.00     0.23       0.00    -0.15
 41  13.0951      0.00     0.12       0.00     0.13
 42  13.1009      0.00     0.10       0.00    -0.19
 43  13.1010      0.00     0.37       0.00    -0.00
 44  13.1010      0.00     0.10       0.00    -0.15
 45  13.1010      0.00     0.10       0.00    -0.05
 46  13.2620      0.00    -0.13       0.00    -0.07
 47  13.2621      0.00     0.04       0.00     0.06
 48  13.2621      0.00    -0.26       0.00    -0.05

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.

469420    quality flag:3

Type:          5:3EE     5:3EE     5:3EE

axisobj        42.444    42.444    42.444
ecceobj         0.220     0.220     0.220
incobj          2.605     2.605     2.605
qmin           32.576    32.576    32.576
qmax           52.790    52.685    52.686
amean          42.327    42.328    42.328
amin           41.800    41.809    41.817
amax           42.916    42.913    42.913
emean           0.193     0.181     0.171
emin            0.126     0.134     0.120
emax            0.230     0.230     0.230
imean           6.890     7.849     8.450
imin            4.139     4.139     4.139
imax           10.420    10.396    11.260
excite_mean     0.231     0.230     0.230
fracstop        1.000     1.000     1.000
cjmean          3.019     3.019     3.019

libcent 0       185.5     177.8     177.0
libamp  0       137.3     141.3     147.2
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       232.4     189.5     191.0
kozaiamp        179.9     179.9     180.0