Orbit Fit and Astrometric record for 469505

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: 469505    
# Created Sat Dec  4 02:07:31 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     87 observations of     87
# Arc:  18.19y
# First observation: 2003/03/31
#  Last observation: 2021/06/09
# Chi-squared of fit:    92.70 DOF:    168 RMS:  0.18
# Min/Max residuals:    -0.68    0.58
# Exact a, adot, b, bdot, g, gdot:
  1.702357E-05  3.329730E-02  2.544878E-06  1.470503E-03  2.849625E-02 -1.159692E-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
    2.286586 -149.102647    0.347156    0.037302   -0.934772  2452729.944633
# Heliocentric elements and errors
Epoch:              2452730.5000  =  2003/04/01
Mean Anomaly:          353.09621 +/-     0.000
Argument of Peri:       53.15678 +/-     0.000
Long of Asc Node:      169.18933 +/-     0.000
Inclination:             3.38272 +/-     0.000
Eccentricity:         0.25373093 +/-    0.0000
Semi-Major Axis:     48.06582150 +/-    0.0000
Time of Perihelion: 2455064.7002 +/-       0.0
Perihelion:          35.87003578 +/-    0.0000
Aphelion:            60.26160722 +/-    0.0000
Period (y)              333.2443 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -31.07103218 +/-    0.0000
Ecliptic Y          -18.18424337 +/-    0.0000
Ecliptic Z            1.40023486 +/-    0.0000
Ecliptic XDOT         0.00173676 +/-    0.0000
Ecliptic YDOT        -0.00268983 +/-    0.0000
Ecliptic ZDOT         0.00013691 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.02829954 +/-    0.0000
Geocenter to KBO     35.09237962 +/-    0.0000
# Hcoef:  6.15

The following table shows the complete astrometric record for 469505. 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 (469505) followed by the observatory code and reference code for the source of the astrometry.

2003 03  31.44389  13 58 18.54   -09 38 31.1   21.5R 469505    695  Ch8428      
2003 04  01.41931  13 58 13.92   -09 38 03.4         469505    695  Ch8428      
2003 04  01.48919  13 58 13.58   -09 38 01.4         469505    695  Ch8428      
2003 04  21.11241  13 56 34.83   -09 28 27.1   18.4R 469505    304  Ch8428      
2003 04  21.13343  13 56 34.72   -09 28 26.5         469505    304  Ch8428      
2003 06  01.34151  13 53 22.60   -09 11 09.0   22.0R 469505    568  Ci1570      
2003 06  02.28781  13 53 19.21   -09 10 51.9         469505    568  Ci1570      
2003 06  02.34446  13 53 19.00   -09 10 50.8         469505    568  Ci1570      
2004 02  17.21646  14 07 58.49   -10 27 55.0   21.8R 469505    493  Cs6949      
2004 02  17.22339  14 07 58.48   -10 27 55.2   21.0R 469505    493  Cs6949      
2004 02  17.23032  14 07 58.47   -10 27 55.1   21.2R 469505    493  Cs6949      
2004 02  18.17155  14 07 57.21   -10 27 43.8   22.0R 469505    493  Cs6949      
2004 02  18.20833  14 07 57.15   -10 27 43.2   21.7R 469505    493  Cs6949      
2004 02  19.12183  14 07 55.83   -10 27 32.0   21.7R 469505    493  Cs6949      
2004 02  19.17359  14 07 55.75   -10 27 31.4   21.9R 469505    493  Cs6949      
2004 02  19.19794  14 07 55.71   -10 27 30.8   22.0R 469505    493  Cs6949      
2004 03  15.41250  14 06 47.81   -10 19 43.6   21.6R 469505    695  Ck7395      
2004 03  15.48722  14 06 47.52   -10 19 41.9         469505    695  Ck7395      
2004 04  15.42473  14 04 25.30   -10 05 42.8         469505    675  Ck7395      
2004 04  15.44770  14 04 25.18   -10 05 42.2         469505    675  Ck7395      
2004 04  16.45247  14 04 20.02   -10 05 13.3         469505    675  Ck7395      
2004 05  26.17289  14 01 05.42   -09 47 50.2   22.2R 469505    304  Ck8680      
2004 05  26.20535  14 01 05.29   -09 47 49.4         469505    304  Ck8680      
2007 06  15.99423  14 22 11.21   -11 23 35.9         469505    304  Cv1532      
2007 06  16.06826  14 22 10.97   -11 23 34.7         469505    304  Cv1532      
2011 06  02.32615  14 53 22.588  -13 32 52.84  22.0w 469505    F51  C~1vVE      
2011 06  02.33944  14 53 22.536  -13 32 52.83  22.2w 469505    F51  C~1vVE      
2011 06  02.35272  14 53 22.459  -13 32 52.43  21.9w 469505    F51  C~1vVE      
2011 06  28.09098  14 51 42.664  -13 26 36.43        469505    309  C~0Wz9      
2011 06  28.09203  14 51 42.663  -13 26 36.61        469505    309  C~0Wz9      
2011 06  28.09300  14 51 42.654  -13 26 36.41        469505    309  C~0Wz9      
2011 06  28.09440  14 51 42.650  -13 26 36.73        469505    309  C~0Wz9      
2011 06  28.09545  14 51 42.622  -13 26 36.59        469505    309  C~0Wz9      
2011 06  28.09642  14 51 42.651  -13 26 36.45        469505    309  C~0Wz9      
2011 06  28.09841  14 51 42.612  -13 26 36.26        469505    309  C~0Wz9      
2011 06  28.10047  14 51 42.622  -13 26 36.54        469505    309  C~0Wz9      
2011 06  28.10247  14 51 42.633  -13 26 36.43        469505    309  C~0Wz9      
2011 06  28.10432  14 51 42.617  -13 26 36.29        469505    309  C~0Wz9      
2011 06  28.10537  14 51 42.619  -13 26 36.25        469505    309  C~0Wz9      
2011 06  28.10635  14 51 42.608  -13 26 36.27        469505    309  C~0Wz9      
2011 06  28.10843  14 51 42.613  -13 26 36.00        469505    309  C~0Wz9      
2011 06  28.11098  14 51 42.610  -13 26 35.94        469505    309  C~0Wz9      
2011 06  28.11346  14 51 42.599  -13 26 35.80        469505    309  C~0Wz9      
2013 04  15.49818  15 12 50.623  -14 47 42.31  22.0w 469505    F51  C~1vVE      
2013 04  15.51244  15 12 50.555  -14 47 42.24  21.8w 469505    F51  C~1vVE      
2013 04  15.52667  15 12 50.479  -14 47 41.66  21.9w 469505    F51  C~1vVE      
2013 04  15.54096  15 12 50.424  -14 47 41.43  22.2w 469505    F51  C~1vVE      
2013 05  08.43408  15 10 51.857  -14 39 02.84  22.0w 469505    F51  C~0ro7      
2013 05  08.44817  15 10 51.760  -14 39 02.34  21.7w 469505    F51  C@0611      
2013 05  08.46225  15 10 51.687  -14 39 01.99  21.8w 469505    F51  C~1vVE      
2013 05  08.47639  15 10 51.610  -14 39 01.65  21.8w 469505    F51  C@0611      
2014 05  10.41617  15 18 26.746  -15 05 34.84  21.2i 469505    F51  C~1vVE      
2014 05  10.42821  15 18 26.682  -15 05 34.42  21.2i 469505    F51  C~1vVE      
2014 05  10.44019  15 18 26.612  -15 05 34.43  21.5i 469505    F51  C~1vVE      
2014 05  20.38169  15 17 32.747  -15 02 02.22  21.7w 469505    F51  C~1vVE      
2014 05  20.39301  15 17 32.688  -15 02 02.07  21.8w 469505    F51  C~1vVE      
2014 05  20.40431  15 17 32.620  -15 02 01.60  21.9w 469505    F51  C~1vVE      
2014 05  20.41560  15 17 32.563  -15 02 01.52  21.8w 469505    F51  C~1vVE      
2014 07  28.26729  15 13 33.469  -14 49 37.71  22.4w 469505    F51  C~1vVE      
2014 07  28.27818  15 13 33.468  -14 49 37.77  22.3w 469505    F51  C~1vVE      
2014 07  28.28909  15 13 33.483  -14 49 37.85  22.1w 469505    F51  C~1vVE      
2014 07  28.29998  15 13 33.478  -14 49 37.67  21.8w 469505    F51  C~1vVE      
2015 05  24.42140  15 24 57.789  -15 27 04.46  22.1w 469505    F51  C~1vVE      
2015 05  24.43291  15 24 57.737  -15 27 04.38  22.0w 469505    F51  C~1vVE      
2015 05  24.44441  15 24 57.660  -15 27 04.20  22.1w 469505    F51  C~1vVE      
2015 05  24.45589  15 24 57.620  -15 27 04.17  22.3w 469505    F51  C~1vVE      
2015 05  25.37568  15 24 52.685  -15 26 45.81  21.2i 469505    F51  C~1vVE      
2015 05  25.38700  15 24 52.645  -15 26 45.77  21.2i 469505    F51  C~1vVE      
2015 05  25.39831  15 24 52.573  -15 26 45.59  21.6i 469505    F51  C~1vVE      
2020 05  20.42829  16 04 15.658  -17 23 00.01  21.7w 469505    F51  C~3vHT      
2020 05  20.43729  16 04 15.609  -17 22 59.87  21.8w 469505    F51  C~3vHT      
2020 05  20.44630  16 04 15.566  -17 22 59.74  21.7w 469505    F51  C~3vHT      
2020 05  20.45565  16 04 15.518  -17 22 59.62  21.7w 469505    F51  C~3vHT      
2020 06  14.37046  16 02 01.174  -17 16 52.43  21.6w 469505    F51  C~3xlw      
2020 06  14.38019  16 02 01.122  -17 16 52.25  21.7w 469505    F51  C~3xlw      
2020 06  14.38989  16 02 01.076  -17 16 52.32  21.9w 469505    F51  C~3xlw      
2020 06  14.39998  16 02 01.018  -17 16 52.04  21.7w 469505    F51  C~3xlw      
2020 06  22.30265  16 01 22.540  -17 15 18.28  22.0w 469505    F51  C~3yIi      
2020 06  22.31345  16 01 22.489  -17 15 18.09  22.0w 469505    F51  C~3yIi      
2020 06  22.32422  16 01 22.432  -17 15 18.12  21.9w 469505    F51  C~3yIi      
2020 06  22.33502  16 01 22.396  -17 15 17.90  22.0w 469505    F51  C~3yIi      
2020 06  23.34608  16 01 17.693  -17 15 07.37  22.0w 469505    F51  C~3yIi      
2020 06  23.35580  16 01 17.656  -17 15 07.09  22.1w 469505    F51  C~3yIi      
2020 06  23.36557  16 01 17.611  -17 15 07.03  21.9w 469505    F51  C~3yIi      
2021 06  09.378223 16 10 15.264  -17 37 37.92  21.5w 469505    F51  C~4tn7      
2021 06  09.384704 16 10 15.235  -17 37 37.89  21.6w 469505    F51  C~4tn7      
2021 06  09.391174 16 10 15.200  -17 37 37.57  21.8w 469505    F51  C~4tn7      

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     0.16       0.00    -0.44
     2   0.0027      0.00     0.27       0.00    -0.38
     3   0.0029      0.00     0.25       0.00    -0.37
     4   0.0566      0.00     0.33       0.00     0.13
     5   0.0566      0.00     0.34       0.00     0.12
     6   0.1695      0.00    -0.68       0.00     0.39
     7   0.1721      0.00    -0.30       0.00     0.31
     8   0.1722      0.00    -0.33       0.00     0.39
     9   0.8837      0.00    -0.14       0.00     0.24
    10   0.8837      0.00    -0.14       0.00    -0.04
    11   0.8837      0.00    -0.15       0.00    -0.02
    12   0.8863      0.00    -0.03       0.00     0.02
    13   0.8864      0.00    -0.11       0.00     0.17
    14   0.8889      0.00    -0.11       0.00    -0.02
    15   0.8891      0.00    -0.08       0.00    -0.08
    16   0.8891      0.00    -0.10       0.00     0.21
    17   0.9582      0.00     0.08       0.00    -0.09
    18   0.9584      0.00     0.04       0.00    -0.15
    19   1.0431      0.00     0.35       0.00     0.13
    20   1.0431      0.00     0.35       0.00     0.06
    21   1.0459      0.00     0.58       0.00    -0.18
    22   1.1546      0.00    -0.36       0.00     0.03
    23   1.1547      0.00    -0.25       0.00     0.14
    24   4.2096      0.00    -0.18       0.00    -0.32
    25   4.2098      0.00    -0.13       0.00    -0.10
    26   8.1722      0.00     0.00       0.00     0.06
    27   8.1722      0.00     0.18       0.00    -0.18
    28   8.1722      0.00    -0.02       0.00    -0.04
    29   8.2427      0.00     0.18       0.00    -0.02
    30   8.2427      0.00     0.21       0.00    -0.21
    31   8.2427      0.00     0.12       0.00    -0.02
    32   8.2427      0.00     0.12       0.00    -0.35
    33   8.2427      0.00    -0.25       0.00    -0.22
    34   8.2427      0.00     0.23       0.00    -0.09
    35   8.2427      0.00    -0.27       0.00     0.08
    36   8.2427      0.00    -0.03       0.00    -0.22
    37   8.2427      0.00     0.23       0.00    -0.13
    38   8.2427      0.00     0.07       0.00    -0.00
    39   8.2427      0.00     0.15       0.00     0.02
    40   8.2427      0.00     0.03       0.00    -0.00
    41   8.2428      0.00     0.20       0.00     0.25
    42   8.2428      0.00     0.26       0.00     0.28
    43   8.2428      0.00     0.21       0.00     0.40
    44  10.0426      0.00    -0.13       0.00     0.18
    45  10.0426      0.00    -0.11       0.00    -0.06
    46  10.0427      0.00    -0.21       0.00     0.20
    47  10.0427      0.00     0.01       0.00     0.12
    48  10.1054      0.00     0.05       0.00    -0.24
    49  10.1054      0.00    -0.24       0.00    -0.06
    50  10.1055      0.00    -0.17       0.00    -0.03
    51  10.1055      0.00    -0.15       0.00    -0.01
    52  11.1101      0.00    -0.03       0.00    -0.05
    53  11.1102      0.00     0.01       0.00     0.11
    54  11.1102      0.00    -0.05       0.00    -0.17
    55  11.1374      0.00    -0.11       0.00     0.05
    56  11.1374      0.00    -0.07       0.00    -0.03
    57  11.1375      0.00    -0.16       0.00     0.20
    58  11.1375      0.00    -0.09       0.00     0.05
    59  11.3260      0.00    -0.17       0.00    -0.00
    60  11.3260      0.00    -0.08       0.00    -0.03
    61  11.3261      0.00     0.24       0.00    -0.09
    62  11.3261      0.00     0.26       0.00     0.12
    63  12.1478      0.00    -0.19       0.00     0.10
    64  12.1478      0.00    -0.02       0.00    -0.04
    65  12.1478      0.00    -0.24       0.00    -0.09
    66  12.1479      0.00     0.10       0.00    -0.28
    67  12.1504      0.00    -0.18       0.00     0.15
    68  12.1504      0.00     0.14       0.00    -0.03
    69  12.1505      0.00    -0.02       0.00    -0.07
    70  17.1389      0.00    -0.07       0.00    -0.05
    71  17.1389      0.00    -0.05       0.00    -0.06
    72  17.1390      0.00     0.07       0.00    -0.07
    73  17.1390      0.00     0.14       0.00    -0.10
    74  17.2072      0.00    -0.01       0.00     0.00
    75  17.2072      0.00    -0.04       0.00     0.06
    76  17.2072      0.00     0.02       0.00    -0.14
    77  17.2073      0.00    -0.06       0.00     0.01
    78  17.2289      0.00     0.07       0.00     0.16
    79  17.2289      0.00     0.07       0.00     0.23
    80  17.2290      0.00    -0.01       0.00     0.08
    81  17.2290      0.00     0.22       0.00     0.19
    82  17.2318      0.00    -0.06       0.00    -0.20
    83  17.2318      0.00     0.07       0.00    -0.03
    84  17.2318      0.00     0.09       0.00    -0.07
    85  18.1928      0.00    -0.11       0.00     0.04
    86  18.1929      0.00    -0.01       0.00    -0.01
    87  18.1929      0.00    -0.01       0.00     0.23

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.

469505    quality flag:3

Type:           2:1E      2:1E      2:1E

axisobj        47.567    47.567    47.567
ecceobj         0.246     0.246     0.246
incobj          3.391     3.391     3.391
qmin           34.596    34.721    34.806
qmax           61.976    61.725    61.806
amean          47.795    47.795    47.795
amin           47.158    47.138    47.164
amax           48.571    48.552    48.547
emean           0.258     0.255     0.254
emin            0.236     0.236     0.235
emax            0.278     0.273     0.273
imean           3.196     3.257     3.369
imin            2.949     2.949     2.949
imax            3.485     3.638     3.579
excite_mean     0.264     0.261     0.261
fracstop        1.000     1.000     1.000
cjmean          3.060     3.062     3.063

libcent 0       179.7     180.0     179.7
libamp  0       148.9     147.2     148.7
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       171.5     152.6     182.1
kozaiamp        179.8     179.9     179.9