Orbit Fit and Astrometric record for 612688

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: 612688    
# Created Sun Sep 25 01:09:19 2022
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     85 observations of     85
# Arc:  16.41y
# First observation: 2003/10/24
#  Last observation: 2020/03/23
# Chi-squared of fit:    99.87 DOF:    164 RMS:  0.19
# Min/Max residuals:    -0.66    1.33
# Exact a, adot, b, bdot, g, gdot:
  1.795683E-05  3.901822E-02 -6.387826E-06 -1.164363E-02  3.335983E-02 -8.221072E-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
   -5.691519   49.403534    0.327654   -0.093217   -0.935766  2452936.831623
# Heliocentric elements and errors
Epoch:              2452936.5000  =  2003/10/24
Mean Anomaly:          328.07314 +/-     0.000
Argument of Peri:      255.80376 +/-     0.000
Long of Asc Node:      211.01623 +/-     0.000
Inclination:            17.55153 +/-     0.000
Eccentricity:         0.29774250 +/-    0.0000
Semi-Major Axis:     39.39144249 +/-    0.0000
Time of Perihelion: 2460945.0694 +/-       0.0
Perihelion:          27.66293611 +/-    0.0000
Aphelion:            51.11994886 +/-    0.0000
Period (y)              247.2356 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           20.26734714 +/-    0.0000
Ecliptic Y           23.15348490 +/-    0.0000
Ecliptic Z           -2.97299601 +/-    0.0000
Ecliptic XDOT        -0.00293477 +/-    0.0000
Ecliptic YDOT         0.00149600 +/-    0.0000
Ecliptic ZDOT        -0.00088381 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   30.91432658 +/-    0.0000
Geocenter to KBO     29.97632317 +/-    0.0000
# Hcoef:  7.05

The following table shows the complete astrometric record for 612688. 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 (612688) followed by the observatory code and reference code for the source of the astrometry.

2003 10  24.33088  03 14 07.28   +12 05 47.4   21.2R 612688    695  Cj5825      
2003 10  24.42362  03 14 06.72   +12 05 44.3         612688    695  Cj5825      
2003 11  21.23181  03 11 14.94   +11 50 34.0   21.0R 612688    695  Cj5825      
2003 11  21.30441  03 11 14.49   +11 50 31.9         612688    695  Cj5825      
2003 12  21.132452 03 08 29.38   +11 38 26.0   21.6V 612688    645  C~1SKw      
2003 12  21.133282 03 08 29.37   +11 38 26.0   21.1V 612688    645  C~1SKw      
2003 12  21.135769 03 08 29.36   +11 38 26.0   22.5V 612688    645  C~1SKw      
2004 09  06.46208  03 26 40.29   +12 25 27.3   22.0R 612688    695  Co2223      
2004 09  07.45362  03 26 39.07   +12 25 04.0   22.0R 612688    695  Co2223      
2005 09  25.47987  03 35 38.45   +12 11 57.2   21.7r 612688    695  Co3932      
2005 09  25.51968  03 35 38.31   +12 11 55.9   21.7r 612688    695  Co3932      
2005 10  01.39374  03 35 17.93   +12 08 58.9   21.5R 612688    688  Co3932      
2005 10  01.46906  03 35 17.63   +12 08 57.0         612688    688  Co3932      
2005 10  28.19740  03 33 04.625  +11 54 27.75  21.2R 612688    290  Cq7063      
2005 10  28.22514  03 33 04.457  +11 54 27.07  21.2R 612688    290  Cq7063      
2005 10  28.24896  03 33 04.327  +11 54 26.33  21.2R 612688    290  Cq7063      
2005 10  28.31479  03 33 03.930  +11 54 24.04  20.9R 612688    290  Cq7063      
2005 10  28.35151  03 33 03.705  +11 54 22.88  21.3R 612688    290  Cq7063      
2007 01  19.10710  03 35 37.64   +11 20 47.7   21.7R 612688    688  Ct8687      
2007 01  19.24035  03 35 37.37   +11 20 47.8         612688    688  Ct8687      
2008 10  31.81069  04 02 53.07   +11 28 44.1   23.4R 612688    250  S~06Af      
2008 10  31.81694  04 02 52.98   +11 28 43.6         612688    250  S~06Af      
2008 10  31.82388  04 02 53.00   +11 28 43.7         612688    250  S~06Af      
2008 10  31.83013  04 02 52.95   +11 28 43.5         612688    250  S~06Af      
2008 12  01.36778  03 59 35.73   +11 14 27.6   21.0R 612688    688  C~02MT      
2008 12  01.41242  03 59 35.43   +11 14 26.1         612688    688  C~02MT      
2010 09  21.53602  04 26 13.432  +11 26 55.25  22.6G 612688    F51  C~2jgJ      
2010 11  08.55549  04 23 01.114  +11 02 05.97  21.2G 612688    F51  C~2jgJ      
2010 11  09.57162  04 22 54.825  +11 01 36.13  22.0G 612688    F51  C~2jgJ      
2010 11  09.58979  04 22 54.701  +11 01 35.44  21.5G 612688    F51  C~2jgJ      
2010 11  11.54542  04 22 42.437  +11 00 39.19  21.4G 612688    F51  C~2jgJ      
2010 11  17.53960  04 22 03.722  +10 57 52.67  21.7G 612688    F51  C~2jgJ      
2011 10  23.44836  04 35 08.918  +10 56 38.23  21.5G 612688    F51  C~2jgJ      
2011 10  23.46325  04 35 08.849  +10 56 37.74  21.8G 612688    F51  C~2jgJ      
2011 10  23.47813  04 35 08.778  +10 56 37.25  21.8G 612688    F51  C~2jgJ      
2011 10  23.49307  04 35 08.701  +10 56 36.82  21.8G 612688    F51  C~2jgJ      
2011 11  26.21400  04 31 46.84   +10 40 42.2   21.6V 612688    G96  C~0b1r      
2011 11  26.22098  04 31 46.70   +10 40 41.3   21.4V 612688    G96  C~0b1r      
2011 11  26.22796  04 31 46.66   +10 40 40.9   21.0V 612688    G96  C~0b1r      
2011 11  26.23494  04 31 46.59   +10 40 40.8   21.4V 612688    G96  C~0b1r      
2011 11  26.47220  04 31 44.982  +10 40 35.56  20.8G 612688    F51  C~2jgJ      
2011 11  26.49693  04 31 44.818  +10 40 34.90  21.4G 612688    F51  C~2jgJ      
2011 11  26.50838  04 31 44.736  +10 40 34.62  21.5G 612688    F51  C~2jgJ      
2012 11  06.61345  04 44 34.249  +10 33 41.26  21.8G 612688    F51  C~2jgJ      
2013 01  08.28557  04 37 53.758  +10 16 28.83  21.7G 612688    F51  C~2jgJ      
2013 01  08.29934  04 37 53.691  +10 16 28.74  21.6G 612688    F51  C~2jgJ      
2013 01  08.31319  04 37 53.616  +10 16 28.82  21.7G 612688    F51  C~2jgJ      
2013 01  25.32049  04 36 41.737  +10 17 33.52  21.4G 612688    F51  C~2jgJ      
2013 10  30.58160  04 56 05.872  +10 20 18.02  21.1G 612688    F51  C~2jgJ      
2013 11  29.52572  04 53 01.759  +10 07 18.16  21.5G 612688    F51  C~2jgJ      
2013 11  29.53983  04 53 01.654  +10 07 17.91  21.4G 612688    F51  C~2jgJ      
2013 11  29.55392  04 53 01.561  +10 07 17.80  21.2G 612688    F51  C~2jgJ      
2013 12  29.39507  04 49 40.817  +10 00 42.11  21.8G 612688    F51  C~2jgJ      
2013 12  29.40888  04 49 40.730  +10 00 42.10  21.3G 612688    F51  C~2jgJ      
2013 12  29.42268  04 49 40.646  +10 00 41.90  21.3G 612688    F51  C~2jgJ      
2013 12  29.43661  04 49 40.559  +10 00 41.80  21.7G 612688    F51  C~2jgJ      
2014 12  12.48356  05 02 33.729  +09 45 17.58  21.6G 612688    F51  C~2jgJ      
2014 12  12.49718  05 02 33.626  +09 45 17.29  21.3G 612688    F51  C~2jgJ      
2014 12  12.52340  05 02 33.445  +09 45 17.03  22.0G 612688    F51  C~2jgJ      
2015 10  11.40573  05 19 11.80   +09 52 01.9   21.0R 612688    695  C~1hTb      
2015 10  11.43959  05 19 11.69   +09 52 01.0         612688    695  C~1hTb      
2015 10  19.50767  05 18 49.565  +09 47 35.09  21.7G 612688    F51  C~2jgJ      
2015 10  19.51884  05 18 49.522  +09 47 34.80  21.7G 612688    F51  C~2jgJ      
2015 10  19.53007  05 18 49.490  +09 47 34.44  21.5G 612688    F51  C~2jgJ      
2015 10  19.54135  05 18 49.453  +09 47 34.09  21.7G 612688    F51  C~2jgJ      
2016 01  13.38099  05 10 13.623  +09 23 09.59  21.8G 612688    F51  C~2jgJ      
2016 01  13.39383  05 10 13.548  +09 23 09.61  21.8G 612688    F51  C~2jgJ      
2016 01  13.40657  05 10 13.483  +09 23 09.63  21.4G 612688    F51  C~2jgJ      
2016 01  13.41927  05 10 13.411  +09 23 09.73  21.7G 612688    F51  C~2jgJ      
2016 11  28.53473  05 26 22.546  +09 07 25.17  21.5G 612688    F51  C~2jgJ      
2016 11  28.54740  05 26 22.450  +09 07 24.93  21.5G 612688    F51  C~2jgJ      
2016 11  28.57286  05 26 22.259  +09 07 24.39  21.5G 612688    F51  C~2jgJ      
2017 01  28.28357  05 20 01.136  +09 04 42.19  21.5G 612688    F51  C~2jgJ      
2017 02  14.33219  05 19 08.363  +09 09 38.71  21.2G 612688    F51  C~2jgJ      
2017 11  24.50690  05 38 04.378  +08 45 40.64  21.4G 612688    F51  C~2jgJ      
2017 11  24.53311  05 38 04.211  +08 45 39.99  21.2G 612688    F51  C~2jgJ      
2017 11  24.54622  05 38 04.130  +08 45 39.61  21.3G 612688    F51  C~2jgJ      
2019 12  31.38124  05 56 31.761  +07 48 59.76  21.6w 612688    F51  C~3Y7M      
2019 12  31.39386  05 56 31.668  +07 48 59.79  21.6w 612688    F51  C~3Y7M      
2019 12  31.40652  05 56 31.581  +07 48 59.68  21.5w 612688    F51  C~3Y7M      
2019 12  31.41937  05 56 31.486  +07 48 59.60  21.5w 612688    F51  C~3Y7M      
2020 03  23.25238  05 52 11.268  +08 16 39.82  21.6w 612688    F51  C~3nCp      
2020 03  23.26461  05 52 11.309  +08 16 40.24  21.8w 612688    F51  C~3nCp      
2020 03  23.27685  05 52 11.337  +08 16 40.32  21.6w 612688    F51  C~3nCp      
2020 03  23.28910  05 52 11.348  +08 16 40.78  21.7w 612688    F51  C~3nCp      

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     0.06       0.00     0.20
     2   0.0003      0.00    -0.11       0.00     0.26
     3   0.0764      0.00    -0.12       0.00     0.06
     4   0.0766      0.00     0.02       0.00     0.14
     5   0.1583      0.00     0.45       0.00    -0.14
     6   0.1583      0.00     0.35       0.00    -0.13
     7   0.1583      0.00     0.38       0.00    -0.08
     8   0.8710      0.00    -0.08       0.00     0.34
     9   0.8737      0.00     0.02       0.00    -0.02
    10   1.9224      0.00    -0.14       0.00     0.24
    11   1.9225      0.00    -0.30       0.00     0.12
    12   1.9386      0.00    -0.01       0.00    -0.11
    13   1.9388      0.00    -0.11       0.00     0.31
    14   2.0120      0.00    -0.14       0.00    -0.16
    15   2.0120      0.00    -0.16       0.00     0.07
    16   2.0121      0.00     0.03       0.00     0.12
    17   2.0123      0.00     0.03       0.00    -0.01
    18   2.0124      0.00    -0.02       0.00     0.05
    19   3.2383      0.00    -0.52       0.00     0.08
    20   3.2386      0.00    -0.07       0.00     0.11
    21   5.0225      0.00     0.14       0.00    -0.16
    22   5.0225      0.00    -0.66       0.00    -0.46
    23   5.0226      0.00     0.26       0.00    -0.15
    24   5.0226      0.00     0.06       0.00    -0.15
    25   5.1062      0.00    -0.11       0.00     0.12
    26   5.1063      0.00    -0.15       0.00    -0.33
    27   6.9109      0.00     0.00       0.00    -0.02
    28   7.0424      0.00    -0.09       0.00     0.22
    29   7.0451      0.00     0.11       0.00     0.04
    30   7.0452      0.00    -0.02       0.00    -0.12
    31   7.0506      0.00     0.17       0.00     0.01
    32   7.0670      0.00     0.08       0.00     0.05
    33   7.9976      0.00     0.01       0.00    -0.04
    34   7.9976      0.00     0.05       0.00    -0.06
    35   7.9977      0.00     0.07       0.00    -0.08
    36   7.9977      0.00     0.00       0.00    -0.04
    37   8.0900      0.00     1.33       0.00     0.70
    38   8.0900      0.00    -0.05       0.00    -0.04
    39   8.0901      0.00     0.07       0.00    -0.28
    40   8.0901      0.00    -0.26       0.00    -0.22
    41   8.0907      0.00    -0.06       0.00     0.02
    42   8.0908      0.00     0.04       0.00    -0.06
    43   8.0908      0.00    -0.00       0.00    -0.07
    44   9.0384      0.00     0.06       0.00    -0.13
    45   9.2100      0.00    -0.13       0.00     0.04
    46   9.2100      0.00    -0.05       0.00    -0.04
    47   9.2101      0.00    -0.09       0.00     0.05
    48   9.2566      0.00    -0.25       0.00    -0.05
    49  10.0185      0.00     0.03       0.00    -0.01
    50  10.1005      0.00     0.09       0.00    -0.19
    51  10.1005      0.00    -0.01       0.00    -0.14
    52  10.1005      0.00     0.07       0.00     0.04
    53  10.1822      0.00    -0.05       0.00    -0.01
    54  10.1823      0.00    -0.05       0.00     0.06
    55  10.1823      0.00    -0.00       0.00    -0.06
    56  10.1824      0.00     0.01       0.00    -0.09
    57  11.1353      0.00     0.08       0.00     0.10
    58  11.1353      0.00    -0.02       0.00    -0.00
    59  11.1354      0.00     0.05       0.00     0.10
    60  11.9646      0.00     0.01       0.00     0.21
    61  11.9647      0.00    -0.47       0.00     0.43
    62  11.9868      0.00     0.09       0.00    -0.04
    63  11.9868      0.00     0.01       0.00     0.03
    64  11.9869      0.00     0.10       0.00     0.04
    65  11.9869      0.00     0.12       0.00     0.05
    66  12.2219      0.00    -0.09       0.00    -0.03
    67  12.2219      0.00    -0.13       0.00    -0.06
    68  12.2220      0.00    -0.03       0.00    -0.10
    69  12.2220      0.00    -0.04       0.00    -0.06
    70  13.0984      0.00     0.15       0.00    -0.02
    71  13.0985      0.00     0.01       0.00    -0.02
    72  13.0985      0.00    -0.25       0.00    -0.06
    73  13.2648      0.00     0.03       0.00     0.00
    74  13.3114      0.00     0.12       0.00     0.01
    75  14.0867      0.00    -0.03       0.00     0.21
    76  14.0868      0.00     0.02       0.00     0.11
    77  14.0868      0.00     0.09       0.00     0.01
    78  16.1863      0.00     0.13       0.00     0.05
    79  16.1863      0.00     0.08       0.00     0.07
    80  16.1864      0.00     0.13       0.00    -0.06
    81  16.1864      0.00     0.07       0.00    -0.15
    82  16.4132      0.00    -0.20       0.00     0.11
    83  16.4132      0.00     0.01       0.00     0.17
    84  16.4133      0.00     0.02       0.00    -0.10
    85  16.4133      0.00    -0.23       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.

612688    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.646    39.646    39.647
ecceobj         0.299     0.299     0.299
incobj         17.493    17.493    17.493
qmin           27.165    27.093    27.050
qmax           52.445    52.361    52.494
amean          39.455    39.455    39.455
amin           39.006    39.004    39.009
amax           40.021    39.987    40.008
emean           0.257     0.257     0.257
emin            0.178     0.179     0.179
emax            0.311     0.311     0.312
imean          19.574    19.611    19.565
imin           17.242    17.311    17.158
imax           22.228    22.221    22.225
excite_mean     0.425     0.425     0.425
fracstop        1.000     1.000     1.000
cjmean          2.845     2.845     2.845

libcent 0       179.2     179.2     179.1
libamp  0        87.6      89.5      88.8
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       270.5     270.3     270.5
kozaiamp         59.9      59.5      59.7