Orbit Fit and Astrometric record for 469750

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: 469750    
# Created Wed Oct 18 01:36:51 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   77 observations of   77
# Arc:  14.92y
# First observation: 2000/08/26
#  Last observation: 2015/07/28
# Chi-squared of fit:    69.85 DOF:  148 RMS:  0.17
# Min/Max residuals:    -0.60    0.52
# Exact a, adot, b, bdot, g, gdot:
  1.578011E-05  1.941855E-02 -9.123557E-07 -1.683178E-03  2.078010E-02 -1.474013E-02
# 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
    3.687818  -23.125351    0.070124    0.064484   -1.003015  2451782.692073
# Heliocentric elements and errors
Epoch:              2451782.5000  =  2000/08/26
Mean Anomaly:          354.10800 +/-     0.000
Argument of Peri:      227.55489 +/-     0.000
Long of Asc Node:      192.60469 +/-     0.000
Inclination:             6.15875 +/-     0.000
Eccentricity:         0.83830436 +/-    0.0000
Semi-Major Axis:    180.92853011 +/-    0.0000
Time of Perihelion: 2466331.0394 +/-       0.0
Perihelion:          29.25535493 +/-    0.0000
Aphelion:           332.60170528 +/-    0.0000
Period (y)             2433.7098 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           45.06725199 +/-    0.0000
Ecliptic Y          -19.31508628 +/-    0.0000
Ecliptic Z            3.09522004 +/-    0.0000
Ecliptic XDOT        -0.00077166 +/-    0.0000
Ecliptic YDOT         0.00311375 +/-    0.0000
Ecliptic ZDOT        -0.00034607 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   49.13006578 +/-    0.0000
Geocenter to KBO     48.12355370 +/-    0.0000
# Hcoef:  6.33

The following table shows the complete astrometric record for 469750. 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 (469750) followed by the observatory code and reference code for the source of the astrometry.

2000 08  26.19133  22 28 55.76   -05 33 36.1   22.1R 469750    807  Cs2484      
2000 08  26.24664  22 28 55.57   -05 33 37.3         469750    807  Cs2484      
2005 08  09.26690  22 53 07.86   -03 42 09.3   21.5R 469750    807  Co4015      
2005 08  10.10542  22 53 04.87   -03 42 27.5         469750    807  Co4015      
2005 08  10.24393  22 53 04.36   -03 42 30.5         469750    807  Co4015      
2005 10  28.35634  22 48 24.93   -04 14 15.8   23.0R 469750    568  Cp2094      
2005 10  28.40524  22 48 24.83   -04 14 16.6         469750    568  Cp2094      
2005 11  02.15065  22 48 16.13   -04 15 34.2   22.3R 469750    695  Cp0721      
2005 11  03.16300  22 48 14.50   -04 15 49.8         469750    695  Cp0721      
2005 11  03.22751  22 48 14.40   -04 15 51.0         469750    695  Cp0721      
2006 08  22.23316  22 57 22.98   -03 23 43.9   21.2R 469750    807  Cs2735      
2006 08  23.15943  22 57 19.33   -03 24 06.5         469750    807  Cs2735      
2006 08  23.22656  22 57 19.06   -03 24 08.1         469750    807  Cs2735      
2006 10  19.13236  22 53 46.05   -03 48 28.9   22.4R 469750    695  Ct0508      
2006 10  19.22671  22 53 45.78   -03 48 30.7         469750    695  Ct0508      
2006 10  20.13464  22 53 43.34   -03 48 50.3         469750    695  Ct0508      
2006 12  21.10113  22 53 24.82   -03 56 21.8   22.5R 469750    695  Ct5529      
2006 12  21.18337  22 53 25.01   -03 56 21.1         469750    695  Ct5529      
2008 06  09.32740  23 10 23.55   -02 21 18.0         469750    807  Cz1385      
2008 06  09.42857  23 10 23.59   -02 21 17.2         469750    807  Cz1385      
2008 07  16.30518  23 09 55.30   -02 22 46.8   24.0R 469750    250  S~06At      
2008 07  16.31212  23 09 55.28   -02 22 46.9         469750    250  S~06At      
2008 07  16.37254  23 09 55.15   -02 22 47.6         469750    250  S~06At      
2008 07  16.37879  23 09 55.13   -02 22 47.7         469750    250  S~06At      
2008 10  23.15983  23 04 01.17   -03 01 54.6   23.0r 469750    695  C~0gMH      
2008 10  23.32642  23 04 00.71   -03 01 57.7   22.6r 469750    695  C~0gMH      
2008 10  24.16025  23 03 58.54   -03 02 15.6   23.2r 469750    695  C~0gMH      
2008 10  24.26929  23 03 58.24   -03 02 18.0   23.2r 469750    695  C~0gMH      
2009 09  16.332276 23 11 46.66   -02 20 03.4   22.6V 469750    645  C~1S6s      
2009 09  16.333106 23 11 46.66   -02 20 03.5   21.9V 469750    645  C~1S6s      
2009 09  16.335593 23 11 46.64   -02 20 03.5   23.0V 469750    645  C~1S6s      
2012 08  26.52980  23 31 00.720  -00 46 35.46  22.3w 469750    F51  C~1vVR      
2012 08  26.54380  23 31 00.663  -00 46 35.55  22.4w 469750    F51  C~1vVR      
2012 08  26.55783  23 31 00.611  -00 46 36.01  22.4w 469750    F51  C~1vVR      
2012 08  26.57187  23 31 00.545  -00 46 36.38  22.5w 469750    F51  C~1vVR      
2013 08  15.50463  23 38 03.590  -00 11 54.05  22.3w 469750    F51  C~1vVR      
2013 08  15.50595  23 38 03.589  -00 11 54.07  22.3w 469750    F51  C~1vVR      
2013 08  15.52019  23 38 03.522  -00 11 54.36  22.4w 469750    F51  C~1vVR      
2013 08  15.52151  23 38 03.515  -00 11 54.70  22.6w 469750    F51  C~1vVR      
2013 08  15.53577  23 38 03.456  -00 11 54.76  22.4w 469750    F51  C~1vVR      
2013 08  15.53709  23 38 03.466  -00 11 54.97  22.4w 469750    F51  C~1vVR      
2013 08  15.55131  23 38 03.402  -00 11 55.02  22.7w 469750    F51  C~1vVR      
2013 08  15.55263  23 38 03.409  -00 11 55.24  22.5w 469750    F51  C~1vVR      
2013 09  03.43012  23 36 47.433  -00 20 17.21  22.3w 469750    F51  C~1vVR      
2013 09  03.44500  23 36 47.367  -00 20 17.69  22.4w 469750    F51  C~1vVR      
2013 09  03.47483  23 36 47.238  -00 20 18.58  22.1w 469750    F51  C~1vVR      
2013 10  11.109456 23 34 03.81   -00 39 16.5   22.0z 469750    W84  C~1n0D      
2013 10  12.103403 23 33 59.90   -00 39 45.1   22.1i 469750    W84  C~1n0D      
2013 10  12.104780 23 33 59.90   -00 39 45.2   22.2z 469750    W84  C~1n0D      
2013 10  13.058148 23 33 56.18   -00 40 12.5         469750    W84  C~1Q3L      
2013 10  13.077164 23 33 56.10   -00 40 13.0         469750    W84  C~1Q3L      
2013 10  28.030995 23 33 03.99   -00 46 45.2         469750    W84  C~1Q3L      
2013 10  28.056597 23 33 03.91   -00 46 45.9         469750    W84  C~1Q3L      
2014 08  06.52429  23 45 05.207  +00 22 16.42  22.4w 469750    F51  C~1vVR      
2014 08  06.53589  23 45 05.152  +00 22 16.26  22.5w 469750    F51  C~1vVR      
2014 08  06.54753  23 45 05.116  +00 22 16.02  22.2w 469750    F51  C~1vVR      
2014 08  23.49386  23 44 05.341  +00 15 45.77  22.3w 469750    F51  C~1vVR      
2014 08  23.50543  23 44 05.295  +00 15 45.37  22.3w 469750    F51  C~1vVR      
2014 08  23.51704  23 44 05.235  +00 15 44.73  22.4w 469750    F51  C~1vVR      
2014 08  23.52865  23 44 05.190  +00 15 44.44  22.4w 469750    F51  C~1vVR      
2014 09  19.33404  23 42 08.804  +00 02 36.08  22.3w 469750    F51  C~1vVR      
2014 09  19.34549  23 42 08.745  +00 02 35.67  22.1w 469750    F51  C~1vVR      
2014 09  19.35692  23 42 08.694  +00 02 35.44  22.0w 469750    F51  C~1vVR      
2014 09  19.36837  23 42 08.640  +00 02 35.19  22.3w 469750    F51  C~1vVR      
2014 12  18.21950  23 38 33.910  -00 26 26.87  22.6w 469750    F51  C~1vVR      
2014 12  18.23158  23 38 33.941  -00 26 27.20  22.1w 469750    F51  C~1vVR      
2014 12  18.24365  23 38 33.924  -00 26 26.78  22.4w 469750    F51  C~1vVR      
2015 07  23.51044  23 52 22.925  +00 57 46.49  22.4w 469750    F51  C~1vVR      
2015 07  23.53469  23 52 22.871  +00 57 46.37  22.1w 469750    F51  C~1vVR      
2015 07  23.54681  23 52 22.845  +00 57 46.34  22.4w 469750    F51  C~1vVR      
2015 07  25.50452  23 52 19.005  +00 57 22.10  22.4w 469750    F51  C~1vVR      
2015 07  25.51719  23 52 18.985  +00 57 21.95  22.3w 469750    F51  C~1vVR      
2015 07  25.52963  23 52 18.964  +00 57 21.80  22.2w 469750    F51  C~1vVR      
2015 07  25.54230  23 52 18.934  +00 57 21.60  22.3w 469750    F51  C~1vVR      
2015 07  28.56163  23 52 12.427  +00 56 40.25  22.7w 469750    F51  C~1vVR      
2015 07  28.57434  23 52 12.382  +00 56 39.82  22.4w 469750    F51  C~1vVR      
2015 07  28.58706  23 52 12.361  +00 56 39.88  22.8w 469750    F51  C~1vVR      

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    -0.60
  2   0.0002      0.00     0.27       0.00    -0.03
  3   4.9530      0.00     0.01       0.00     0.04
  4   4.9553      0.00     0.22       0.00    -0.15
  5   4.9557      0.00     0.19       0.00    -0.15
  6   5.1723      0.00    -0.03       0.00     0.01
  7   5.1724      0.00    -0.02       0.00     0.06
  8   5.1854      0.00    -0.09       0.00     0.22
  9   5.1881      0.00     0.11       0.00     0.01
 10   5.1883      0.00     0.20       0.00    -0.23
 11   5.9878      0.00    -0.05       0.00    -0.23
 12   5.9903      0.00     0.15       0.00     0.19
 13   5.9905      0.00     0.16       0.00     0.26
 14   6.1463      0.00    -0.04       0.00    -0.05
 15   6.1466      0.00    -0.12       0.00     0.16
 16   6.1491      0.00     0.03       0.00    -0.18
 17   6.3187      0.00    -0.26       0.00     0.39
 18   6.3189      0.00    -0.17       0.00     0.38
 19   7.7868      0.00     0.03       0.00     0.28
 20   7.7871      0.00    -0.36       0.00     0.35
 21   7.8881      0.00     0.22       0.00    -0.13
 22   7.8881      0.00     0.14       0.00    -0.15
 23   7.8882      0.00     0.16       0.00    -0.14
 24   7.8883      0.00     0.06       0.00    -0.16
 25   8.1587      0.00    -0.17       0.00     0.07
 26   8.1592      0.00    -0.22       0.00     0.52
 27   8.1614      0.00     0.15       0.00     0.24
 28   8.1617      0.00     0.04       0.00     0.13
 29   9.0572      0.00     0.31       0.00    -0.36
 30   9.0572      0.00     0.36       0.00    -0.43
 31   9.0572      0.00     0.22       0.00    -0.36
 32  12.0009      0.00     0.09       0.00    -0.16
 33  12.0010      0.00     0.12       0.00     0.13
 34  12.0010      0.00     0.22       0.00     0.05
 35  12.0010      0.00     0.11       0.00     0.06
 36  12.9701      0.00     0.19       0.00     0.04
 37  12.9701      0.00     0.25       0.00     0.06
 38  12.9701      0.00     0.04       0.00     0.10
 39  12.9701      0.00     0.01       0.00    -0.21
 40  12.9701      0.00    -0.08       0.00     0.07
 41  12.9701      0.00     0.14       0.00    -0.11
 42  12.9702      0.00    -0.02       0.00     0.18
 43  12.9702      0.00     0.15       0.00    -0.01
 44  13.0219      0.00    -0.11       0.00    -0.04
 45  13.0219      0.00    -0.11       0.00    -0.09
 46  13.0220      0.00    -0.07       0.00    -0.11
 47  13.1250      0.00     0.05       0.00     0.15
 48  13.1278      0.00     0.10       0.00     0.09
 49  13.1278      0.00     0.18       0.00     0.03
 50  13.1304      0.00     0.02       0.00    -0.12
 51  13.1304      0.00    -0.05       0.00    -0.08
 52  13.1714      0.00     0.07       0.00     0.02
 53  13.1714      0.00     0.07       0.00    -0.07
 54  13.9448      0.00     0.26       0.00    -0.08
 55  13.9448      0.00    -0.02       0.00    -0.02
 56  13.9448      0.00    -0.01       0.00    -0.03
 57  13.9912      0.00     0.05       0.00     0.32
 58  13.9913      0.00     0.06       0.00     0.22
 59  13.9913      0.00    -0.13       0.00    -0.11
 60  13.9913      0.00    -0.10       0.00    -0.10
 61  14.0647      0.00     0.11       0.00    -0.03
 62  14.0648      0.00     0.02       0.00    -0.09
 63  14.0648      0.00     0.04       0.00     0.04
 64  14.0648      0.00     0.03       0.00     0.15
 65  14.3108      0.00    -0.03       0.00     0.16
 66  14.3109      0.00     0.22       0.00    -0.21
 67  14.3109      0.00    -0.25       0.00     0.17
 68  14.9057      0.00     0.19       0.00    -0.06
 69  14.9058      0.00     0.09       0.00     0.11
 70  14.9058      0.00     0.06       0.00     0.22
 71  14.9112      0.00    -0.12       0.00     0.08
 72  14.9112      0.00    -0.01       0.00     0.09
 73  14.9113      0.00     0.07       0.00     0.10
 74  14.9113      0.00     0.02       0.00     0.06
 75  14.9196      0.00     0.14       0.00     0.00
 76  14.9196      0.00    -0.09       0.00    -0.24
 77  14.9196      0.00     0.05       0.00     0.00

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.

469750    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj       182.032   182.024   182.040
ecceobj         0.839     0.839     0.839
incobj          6.157     6.157     6.157
qmin           27.601    27.869    27.521
qmax          457.464   338.301   468.884
amean         204.847   177.096   211.221
amin          172.499   172.494   168.786
amax          243.508   183.833   249.168
emean           0.856     0.834     0.860
emin            0.826     0.826     0.824
emax            0.881     0.842     0.884
imean           5.312     6.222     4.719
imin            4.032     6.115     3.821
imax            7.778     6.343     6.343
excite_mean     0.862     0.841     0.864
fracstop        0.296     0.011     0.298
cjmean          2.825     2.830     2.827

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       290.8     228.6     295.8
kozaiamp         54.2       1.6      52.8