Orbit Fit and Astrometric record for 469506

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: 469506    
# Created Thu Oct 19 01:36:49 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   89 observations of   89
# Arc:  14.16y
# First observation: 2003/03/31
#  Last observation: 2017/05/27
# Chi-squared of fit:   102.35 DOF:  172 RMS:  0.19
# Min/Max residuals:    -0.50    0.83
# Exact a, adot, b, bdot, g, gdot:
  1.869310E-05  3.631178E-02 -1.241344E-06 -6.239365E-04  3.108824E-02 -4.805645E-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
    1.692194 -146.992954    0.381299    0.027207   -0.921726  2452729.948393
# Heliocentric elements and errors
Epoch:              2452730.5000  =  2003/04/01
Mean Anomaly:          327.69500 +/-     0.000
Argument of Peri:      169.57460 +/-     0.000
Long of Asc Node:       91.71497 +/-     0.000
Inclination:             1.91139 +/-     0.000
Eccentricity:         0.21423363 +/-    0.0000
Semi-Major Axis:     39.55946607 +/-    0.0000
Time of Perihelion: 2460885.8245 +/-       0.0
Perihelion:          31.08449823 +/-    0.0000
Aphelion:            48.03443391 +/-    0.0000
Period (y)              248.8192 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -27.94582659 +/-    0.0000
Ecliptic Y          -17.69348746 +/-    0.0000
Ecliptic Z            0.94987578 +/-    0.0000
Ecliptic XDOT         0.00208905 +/-    0.0000
Ecliptic YDOT        -0.00245695 +/-    0.0000
Ecliptic ZDOT        -0.00006723 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.08982513 +/-    0.0000
Geocenter to KBO     32.16660108 +/-    0.0000
# Hcoef:  6.73

The following table shows the complete astrometric record for 469506. 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 (469506) followed by the observatory code and reference code for the source of the astrometry.

2003 03  31.44765  14 05 31.90   -10 55 24.6   21.5R 469506    695  Ch8428      
2003 04  01.40718  14 05 26.96   -10 54 57.3         469506    695  Ch8428      
2003 04  01.47677  14 05 26.60   -10 54 55.3         469506    695  Ch8428      
2003 04  21.12260  14 03 38.35   -10 45 09.7   20.2R 469506    304  Ch8428      
2003 04  21.14374  14 03 38.23   -10 45 08.9         469506    304  Ch8428      
2003 04  30.21498  14 02 46.49   -10 40 35.7   21.5R 469506    688  Ch8428      
2003 04  30.30286  14 02 46.02   -10 40 33.8         469506    688  Ch8428      
2003 05  30.18115  14 00 12.35   -10 27 33.5   22.1R 469506    688  Ci0218      
2003 05  30.25661  14 00 12.04   -10 27 31.6         469506    688  Ci0218      
2003 06  02.35179  13 59 59.00   -10 26 28.5   22.1R 469506    568  Ci1570      
2003 06  02.41891  13 59 58.73   -10 26 27.5         469506    568  Ci1570      
2004 02  18.16422  14 15 52.65   -11 53 14.1   21.8R 469506    493  Cs6949      
2004 02  18.23749  14 15 52.56   -11 53 13.0   21.7R 469506    493  Cs6949      
2004 03  15.41711  14 14 40.90   -11 46 04.7   20.6R 469506    695  Ck7395      
2004 03  15.49111  14 14 40.56   -11 46 03.0         469506    695  Ck7395      
2004 04  15.42950  14 12 06.15   -11 32 10.2         469506    675  Ck7395      
2004 04  15.45098  14 12 06.02   -11 32 09.6         469506    675  Ck7395      
2004 04  16.45590  14 12 00.35   -11 31 39.9         469506    675  Ck7395      
2004 05  19.24561  14 08 56.82   -11 16 07.6   22.0R 469506    688   k8111      
2004 05  19.32681  14 08 56.38   -11 16 05.5         469506    688   k8111      
2004 05  25.15220  14 08 27.46   -11 13 44.0   22.3R 469506    304  Ck8680      
2004 05  25.15318  14 08 27.46   -11 13 43.9         469506    304  Ck8680      
2004 05  25.15431  14 08 27.45   -11 13 44.0         469506    304  Ck8680      
2004 05  25.15530  14 08 27.45   -11 13 43.9         469506    304  Ck8680      
2004 05  25.15628  14 08 27.44   -11 13 44.0         469506    304  Ck8680      
2004 05  25.15727  14 08 27.44   -11 13 43.9         469506    304  Ck8680      
2004 05  25.15837  14 08 27.44   -11 13 43.9         469506    304  Ck8680      
2004 05  25.15936  14 08 27.43   -11 13 43.7         469506    304  Ck8680      
2004 05  25.16035  14 08 27.43   -11 13 43.8         469506    304  Ck8680      
2004 05  25.16134  14 08 27.43   -11 13 43.7         469506    304  Ck8680      
2004 05  25.16243  14 08 27.42   -11 13 43.7         469506    304  Ck8680      
2004 05  25.16343  14 08 27.41   -11 13 43.7         469506    304  Ck8680      
2004 05  28.01623  14 08 14.01   -11 12 39.0         469506    304  Ck8680      
2004 05  28.03839  14 08 13.91   -11 12 38.3         469506    304  Ck8680      
2004 05  28.06050  14 08 13.82   -11 12 37.8         469506    304  Ck8680      
2004 05  28.08340  14 08 13.69   -11 12 37.4         469506    304  Ck8680      
2004 05  28.10632  14 08 13.59   -11 12 37.2         469506    304  Ck8680      
2004 05  28.12978  14 08 13.49   -11 12 36.3         469506    304  Ck8680      
2004 05  29.03722  14 08 09.32   -11 12 16.6         469506    304  Ck8680      
2004 05  29.06138  14 08 09.20   -11 12 16.6         469506    304  Ck8680      
2007 06  15.99852  14 31 25.71   -13 18 19.6         469506    304  Cv1532      
2007 06  16.07228  14 31 25.42   -13 18 18.2         469506    304  Cv1532      
2011 06  02.33078  15 06 54.967  -16 08 37.97  21.7w 469506    F51  C~1vVE      
2011 06  02.34406  15 06 54.893  -16 08 37.65  21.7w 469506    F51  C~1vVE      
2011 06  02.35733  15 06 54.809  -16 08 37.53  21.6w 469506    F51  C~1vVE      
2011 06  02.37060  15 06 54.739  -16 08 37.14  21.8w 469506    F51  C~1vVE      
2013 05  08.43539  15 27 25.751  -17 34 27.31  21.6w 469506    F51  C~1vVE      
2013 05  08.43671  15 27 25.745  -17 34 27.32  21.6w 469506    F51  C~1vVE      
2013 05  08.44949  15 27 25.656  -17 34 27.01  21.7w 469506    F51  C~1vVE      
2013 05  08.45081  15 27 25.656  -17 34 27.03  21.6w 469506    F51  C~1vVE      
2013 05  08.46358  15 27 25.569  -17 34 26.72  21.8w 469506    F51  C~1vVE      
2013 05  08.46490  15 27 25.566  -17 34 26.70  21.6w 469506    F51  C~1vVE      
2013 05  08.47772  15 27 25.482  -17 34 26.39  21.6w 469506    F51  C~1vVE      
2013 05  08.47903  15 27 25.475  -17 34 26.26  21.6w 469506    F51  C~1vVE      
2014 04  30.46023  15 37 30.029  -18 13 33.25  21.9w 469506    F51  C~1vVE      
2014 04  30.47211  15 37 29.970  -18 13 33.06  21.6w 469506    F51  C~1vVE      
2014 04  30.48399  15 37 29.898  -18 13 32.78  21.6w 469506    F51  C~1vVE      
2014 04  30.49586  15 37 29.814  -18 13 32.44  21.8w 469506    F51  C~1vVE      
2014 05  08.47715  15 36 41.194  -18 10 47.65  21.7w 469506    F51  C~1vVE      
2014 05  08.48927  15 36 41.118  -18 10 47.37  21.6w 469506    F51  C~1vVE      
2014 05  08.50139  15 36 41.037  -18 10 47.16  21.7w 469506    F51  C~1vVE      
2014 05  08.51350  15 36 40.963  -18 10 46.85  21.8w 469506    F51  C~1vVE      
2014 05  20.38501  15 35 26.527  -18 06 37.54  21.9w 469506    F51  C~1vVE      
2014 05  20.39631  15 35 26.453  -18 06 37.34  21.6w 469506    F51  C~1vVE      
2014 05  20.40761  15 35 26.389  -18 06 36.96  21.7w 469506    F51  C~1vVE      
2014 05  20.41889  15 35 26.311  -18 06 36.86  21.8w 469506    F51  C~1vVE      
2014 07  01.32039  15 31 37.296  -17 54 22.85  22.2w 469506    F51  C~1vVE      
2014 07  01.33166  15 31 37.250  -17 54 22.72  22.1w 469506    F51  C~1vVE      
2014 07  01.34293  15 31 37.190  -17 54 22.49  21.9w 469506    F51  C~1vVE      
2014 07  01.35420  15 31 37.153  -17 54 22.36  22.1w 469506    F51  C~1vVE      
2014 07  25.27022  15 30 30.452  -17 51 25.73  21.7w 469506    F51  C~1vVE      
2014 07  25.28081  15 30 30.437  -17 51 25.56  22.0w 469506    F51  C~1vVE      
2014 07  25.29139  15 30 30.431  -17 51 25.81  22.0w 469506    F51  C~1vVE      
2014 07  25.30195  15 30 30.416  -17 51 25.65  22.0w 469506    F51  C~1vVE      
2015 05  24.42273  15 44 24.019  -18 40 26.92  21.6w 469506    F51  C~1vVE      
2015 05  24.43423  15 44 23.945  -18 40 26.77  21.9w 469506    F51  C~1vVE      
2015 05  24.44573  15 44 23.869  -18 40 26.57  22.1w 469506    F51  C~1vVE      
2015 05  24.45720  15 44 23.829  -18 40 26.23  21.8w 469506    F51  C~1vVE      
2015 07  19.27789  15 39 51.859  -18 27 10.17  22.1w 469506    F51  C~1vVE      
2015 07  19.27823  15 39 51.855  -18 27 10.00  22.0w 469506    F51  C~1vVE      
2015 07  19.28872  15 39 51.830  -18 27 10.07  22.0w 469506    F51  C~1vVE      
2015 07  19.28951  15 39 51.816  -18 27 10.10  21.9w 469506    F51  C~1vVE      
2015 07  19.29983  15 39 51.797  -18 27 09.79  21.8w 469506    F51  C~1vVE      
2015 07  19.30047  15 39 51.804  -18 27 09.95  21.7w 469506    F51  C~1vVE      
2015 07  19.31079  15 39 51.783  -18 27 09.86  21.9w 469506    F51  C~1vVE      
2015 07  19.31128  15 39 51.764  -18 27 09.84  21.4w 469506    F51  C~1vVE      
2017 05  27.40433  16 03 06.934  -19 45 00.34  21.9w 469506    F51  C~2Gdd      
2017 05  27.41542  16 03 06.823  -19 45 00.06  21.7w 469506    F51  C~2Gdd      
2017 05  27.43756  16 03 06.686  -19 44 59.67  21.8w 469506    F51  C~2Gdd      

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    -0.27       0.00     0.72
  2   0.0026      0.00     0.07       0.00     0.22
  3   0.0028      0.00     0.17       0.00     0.23
  4   0.0566      0.00     0.15       0.00     0.08
  5   0.0567      0.00     0.19       0.00     0.24
  6   0.0815      0.00    -0.04       0.00     0.72
  7   0.0817      0.00     0.51       0.00     0.01
  8   0.1635      0.00    -0.43       0.00    -0.15
  9   0.1637      0.00    -0.07       0.00     0.16
 10   0.1722      0.00    -0.05       0.00     0.11
 11   0.1724      0.00     0.12       0.00    -0.21
 12   0.8863      0.00    -0.16       0.00    -0.26
 13   0.8865      0.00     0.05       0.00     0.15
 14   0.9582      0.00     0.25       0.00    -0.50
 15   0.9584      0.00    -0.30       0.00    -0.46
 16   1.0431      0.00     0.46       0.00     0.26
 17   1.0431      0.00     0.36       0.00     0.22
 18   1.0459      0.00     0.83       0.00     0.10
 19   1.1357      0.00     0.22       0.00    -0.29
 20   1.1359      0.00    -0.02       0.00    -0.25
 21   1.1518      0.00    -0.08       0.00    -0.14
 22   1.1518      0.00    -0.01       0.00    -0.07
 23   1.1518      0.00    -0.08       0.00    -0.19
 24   1.1518      0.00    -0.01       0.00    -0.12
 25   1.1518      0.00    -0.08       0.00    -0.24
 26   1.1518      0.00    -0.01       0.00    -0.16
 27   1.1518      0.00     0.07       0.00    -0.19
 28   1.1518      0.00    -0.01       0.00    -0.01
 29   1.1518      0.00     0.07       0.00    -0.13
 30   1.1519      0.00     0.14       0.00    -0.06
 31   1.1519      0.00     0.07       0.00    -0.08
 32   1.1519      0.00    -0.01       0.00    -0.11
 33   1.1597      0.00    -0.05       0.00    -0.03
 34   1.1597      0.00     0.02       0.00     0.19
 35   1.1598      0.00     0.23       0.00     0.20
 36   1.1599      0.00    -0.11       0.00     0.10
 37   1.1599      0.00     0.01       0.00    -0.21
 38   1.1600      0.00     0.16       0.00     0.17
 39   1.1625      0.00    -0.33       0.00     0.02
 40   1.1625      0.00    -0.45       0.00    -0.50
 41   4.2096      0.00     0.21       0.00     0.03
 42   4.2098      0.00     0.17       0.00     0.27
 43   8.1722      0.00     0.09       0.00     0.02
 44   8.1722      0.00     0.11       0.00     0.06
 45   8.1722      0.00    -0.03       0.00    -0.10
 46   8.1723      0.00     0.05       0.00     0.01
 47  10.1054      0.00    -0.04       0.00    -0.04
 48  10.1054      0.00    -0.01       0.00    -0.08
 49  10.1054      0.00    -0.13       0.00    -0.05
 50  10.1054      0.00    -0.01       0.00    -0.10
 51  10.1055      0.00    -0.10       0.00    -0.07
 52  10.1055      0.00    -0.02       0.00    -0.08
 53  10.1055      0.00    -0.07       0.00    -0.06
 54  10.1055      0.00    -0.05       0.00     0.04
 55  11.0829      0.00    -0.09       0.00    -0.02
 56  11.0829      0.00     0.10       0.00    -0.07
 57  11.0829      0.00     0.11       0.00    -0.03
 58  11.0830      0.00    -0.07       0.00     0.07
 59  11.1048      0.00     0.13       0.00    -0.02
 60  11.1048      0.00     0.14       0.00     0.01
 61  11.1049      0.00     0.07       0.00    -0.04
 62  11.1049      0.00     0.11       0.00     0.02
 63  11.1374      0.00     0.03       0.00    -0.03
 64  11.1374      0.00     0.00       0.00    -0.06
 65  11.1375      0.00     0.13       0.00     0.08
 66  11.1375      0.00     0.04       0.00    -0.06
 67  11.2522      0.00     0.16       0.00     0.02
 68  11.2522      0.00     0.17       0.00     0.01
 69  11.2523      0.00    -0.03       0.00     0.10
 70  11.2523      0.00     0.12       0.00     0.10
 71  11.3178      0.00     0.02       0.00     0.09
 72  11.3178      0.00     0.04       0.00     0.23
 73  11.3178      0.00     0.20       0.00    -0.05
 74  11.3179      0.00     0.22       0.00     0.09
 75  12.1478      0.00    -0.02       0.00    -0.07
 76  12.1478      0.00    -0.01       0.00    -0.15
 77  12.1478      0.00    -0.04       0.00    -0.17
 78  12.1479      0.00     0.46       0.00    -0.06
 79  12.3007      0.00     0.12       0.00    -0.14
 80  12.3007      0.00     0.08       0.00     0.02
 81  12.3007      0.00     0.10       0.00    -0.11
 82  12.3007      0.00    -0.07       0.00    -0.14
 83  12.3008      0.00     0.04       0.00     0.11
 84  12.3008      0.00     0.17       0.00    -0.05
 85  12.3008      0.00     0.25       0.00    -0.02
 86  12.3008      0.00    -0.02       0.00    -0.01
 87  14.1573      0.00     0.40       0.00     0.02
 88  14.1573      0.00    -0.17       0.00     0.11
 89  14.1574      0.00    -0.05       0.00     0.12

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.

469506    quality flag:3

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

axisobj        39.250    39.250    39.250
ecceobj         0.211     0.211     0.211
incobj          1.912     1.912     1.912
qmin           30.276    30.275    30.277
qmax           49.213    49.164    49.244
amean          39.456    39.456    39.456
amin           39.049    39.043    39.044
amax           39.929    39.933    39.951
emean           0.217     0.217     0.217
emin            0.201     0.201     0.201
emax            0.233     0.232     0.233
imean           0.787     0.786     0.787
imin            0.063     0.066     0.066
imax            1.558     1.558     1.559
excite_mean     0.218     0.218     0.218
fracstop        1.000     1.000     1.000
cjmean          2.997     2.997     2.997

libcent 0       180.4     180.1     180.5
libamp  0        64.4      64.3      64.5
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       167.6     167.8     167.7
kozaiamp        179.9     180.0     179.9