Orbit Fit and Astrometric record for 508823

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: 508823    
# Created Wed Feb 20 02:07:31 2019
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   77 observations of   77
# Arc:  16.03y
# First observation: 2001/09/12
#  Last observation: 2017/09/23
# Chi-squared of fit:   209.42 DOF:  148 RMS:  0.29
# Min/Max residuals:    -1.22    1.07
# Exact a, adot, b, bdot, g, gdot:
  1.377420E-05  2.212330E-02  4.456344E-06  7.704560E-03  2.526388E-02  7.475593E-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
   -2.485808   14.181989    0.422744   -0.039667   -0.910867  2452164.864523
# Heliocentric elements and errors
Epoch:              2452164.5000  =  2001/09/12
Mean Anomaly:           78.73055 +/-     0.000
Argument of Peri:      240.41657 +/-     0.000
Long of Asc Node:       20.57994 +/-     0.000
Inclination:            19.22103 +/-     0.000
Eccentricity:         0.29313356 +/-    0.0000
Semi-Major Axis:     39.40176511 +/-    0.0000
Time of Perihelion: 2432407.8768 +/-       0.0
Perihelion:          27.85178556 +/-    0.0000
Aphelion:            50.95174466 +/-    0.0000
Period (y)              247.3328 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           39.32960565 +/-    0.0000
Ecliptic Y            9.50821573 +/-    0.0000
Ecliptic Z           -1.71656175 +/-    0.0000
Ecliptic XDOT         0.00022375 +/-    0.0000
Ecliptic YDOT         0.00253265 +/-    0.0000
Ecliptic ZDOT         0.00079923 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.49884284 +/-    0.0000
Geocenter to KBO     39.58205281 +/-    0.0000
# Hcoef:  6.57

The following table shows the complete astrometric record for 508823. 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 (508823) followed by the observatory code and reference code for the source of the astrometry.

2001 09  12.36378  00 56 04.34   +03 18 01.6   22.1R 508823    695  Ce0436      
2001 09  12.45042  00 56 03.97   +03 17 59.5         508823    695  Ce0436      
2001 10  19.35775  00 53 09.26   +03 02 22.6   22.0R 508823    695  Ce0436      
2001 10  19.40456  00 53 09.04   +03 02 21.3         508823    695  Ce0436      
2001 10  20.35560  00 53 04.52   +03 01 58.5         508823    695  Ce0436      
2001 11  03.05590  00 52 02.55   +02 56 53.4   20.1  508823    304  Ce6603      
2001 11  03.10201  00 52 02.35   +02 56 52.2         508823    304  Ce6603      
2002 08  11.38957  01 01 50.85   +04 21 17.8   21.6R 508823    807  Cg3223      
2002 08  12.33198  01 01 48.72   +04 21 06.1         508823    807  Cg3223      
2002 08  12.40948  01 01 48.53   +04 21 05.2         508823    807  Cg3223      
2002 10  11.29186  00 57 49.16   +03 59 25.2   22.3R 508823    290  Cg7894      
2002 10  11.39979  00 57 48.65   +03 59 22.4   22.5R 508823    290  Cg7894      
2002 11  07.32892  00 55 45.29   +03 49 02.9   22.5R 508823    568  Cl8341      
2002 11  07.39226  00 55 44.98   +03 49 01.6         508823    568  Cl8341      
2002 11  28.12946  00 54 32.55   +03 43 48.1   22.0R 508823    688  Cg7894      
2002 11  28.23981  00 54 32.23   +03 43 47.5         508823    688  Cg7894      
2002 12  02.15810  00 54 21.95   +03 43 11.3   22.3R 508823    688  Cg7894      
2002 12  02.25417  00 54 21.70   +03 43 10.4         508823    688  Cg7894      
2005 09  28.297889 01 10 30.83   +06 40 21.1   22.7V 508823    645  C~2Jx5      
2005 09  28.298718 01 10 30.81   +06 40 21.0   22.1V 508823    645  C~2Jx5      
2005 09  28.301296 01 10 30.83   +06 40 21.2   24.2V 508823    645  C~2Jx5      
2005 10  03.74414  01 10 05.30   +06 38 09.3   22.0R 508823    250  S~06AQ      
2005 10  03.75086  01 10 05.26   +06 38 09.1         508823    250  S~06AQ      
2005 10  03.75757  01 10 05.23   +06 38 08.9         508823    250  S~06AQ      
2006 09  24.35001  01 14 38.21   +07 32 09.9   22.4R 508823    688  Cs0799      
2006 09  24.42633  01 14 37.86   +07 32 08.4         508823    688  Cs0799      
2008 11  01.373038 01 19 09.59   +08 55 05.5   22.8V 508823    645  C~2Jx5      
2008 11  01.373867 01 19 09.59   +08 55 05.4   22.4V 508823    645  C~2Jx5      
2008 11  01.376355 01 19 09.60   +08 55 05.4   23.6V 508823    645  C~2Jx5      
2011 12  25.08912  01 27 26.69   +11 02 51.1   22.4R 508823    688  C~0bcY      
2011 12  25.22216  01 27 26.51   +11 02 48.0         508823    688  C~0bcY      
2013 09  02.42913  01 41 48.059  +13 07 25.13  23.1r 508823    568  C~2WX1      
2013 09  02.47226  01 41 47.919  +13 07 24.76  23.0r 508823    568  C~2WX1      
2013 09  03.44820  01 41 44.964  +13 07 14.58  23.0r 508823    568  C~2WX1      
2013 09  03.49483  01 41 44.816  +13 07 14.10  22.8r 508823    568  C~2WX1      
2013 10  08.50929  01 39 25.480  +12 57 29.47  23.0r 508823    568  C~2WX1      
2013 10  30.50202  01 37 42.429  +12 49 12.94  22.8r 508823    568  C~2WX1      
2013 11  01.50542  01 37 33.199  +12 48 26.92  22.8r 508823    568  C~2WX1      
2013 11  28.29208  01 35 43.318  +12 39 01.10  23.0r 508823    568  C~2WX1      
2013 11  29.24926  01 35 40.054  +12 38 43.77  23.0r 508823    568  C~2WX1      
2013 12  04.39820  01 35 23.486  +12 37 15.71  23.0r 508823    568  C~2WX1      
2013 12  29.26359  01 34 31.778  +12 32 35.74  23.1r 508823    568  C~2WX1      
2013 12  30.36912  01 34 30.676  +12 32 29.70  23.4r 508823    568  C~2WX1      
2014 01  02.24545  01 34 28.348  +12 32 16.95  22.9r 508823    568  C~2WX2      
2014 01  02.29253  01 34 28.310  +12 32 16.71  23.1r 508823    568  C~2WX2      
2014 01  03.21549  01 34 27.724  +12 32 13.39  23.2r 508823    568  C~2WX2      
2014 01  03.25792  01 34 27.697  +12 32 13.39  23.0r 508823    568  C~2WX2      
2014 01  03.32340  01 34 27.661  +12 32 13.00  23.3r 508823    568  C~2WX2      
2014 07  26.52587  01 46 17.861  +13 51 37.55  23.1r 508823    568  C~2WX2      
2014 07  26.56909  01 46 17.863  +13 51 37.96  23.0r 508823    568  C~2WX2      
2014 07  26.61244  01 46 17.863  +13 51 38.31  23.1r 508823    568  C~2WX2      
2014 08  24.53579  01 45 46.117  +13 52 24.94  22.9r 508823    568  C~2WX2      
2014 08  30.44167  01 45 31.417  +13 51 46.34  23.1r 508823    568  C~2WX2      
2014 08  30.54834  01 45 31.125  +13 51 45.47  22.9r 508823    568  C~2WX2      
2014 09  18.46688  01 44 28.286  +13 48 03.13  23.0r 508823    568  C~2WX2      
2014 09  18.50960  01 44 28.119  +13 48 02.50  23.0r 508823    568  C~2WX2      
2014 09  23.50788  01 44 08.171  +13 46 41.67  23.0r 508823    568  C~2WX2      
2014 10  22.29094  01 41 58.076  +13 36 55.26  22.9r 508823    568  C~2WX2      
2014 10  22.33551  01 41 57.863  +13 36 54.21  22.7r 508823    568  C~2WX2      
2014 10  22.38043  01 41 57.646  +13 36 53.19  22.9r 508823    568  C~2WX2      
2014 10  23.47641  01 41 52.466  +13 36 28.28  22.8r 508823    568  C~2WX2      
2014 10  25.49236  01 41 42.971  +13 35 42.42  22.9r 508823    568  C~2WX2      
2014 11  20.22362  01 39 49.348  +13 26 09.60  23.0r 508823    568  C~2WX2      
2014 11  20.36407  01 39 48.782  +13 26 06.75  23.1r 508823    568  C~2WX2      
2014 11  21.26073  01 39 45.267  +13 25 48.32  22.9r 508823    568  C~2WX2      
2014 11  21.27044  01 39 45.227  +13 25 48.10  22.9r 508823    568  C~2WX2      
2014 11  21.42582  01 39 44.615  +13 25 44.90  23.0r 508823    568  C~2WX2      
2015 01  28.26749  01 38 11.038  +13 17 00.70  22.8r 508823    568  C~2WX2      
2015 02  18.26839  01 39 02.297  +13 21 46.23  23.1r 508823    568  C~2WX2      
2015 12  07.42022  01 42 23.508  +14 04 34.22  23.2w 508823    568  C~2WX2      
2016 11  04.38287  01 48 02.537  +14 58 36.20  23.0w 508823    568  C~2WX2      
2016 11  04.43686  01 48 02.285  +14 58 35.01  23.1w 508823    568  C~2WX2      
2017 08  25.58743  01 56 16.283  +15 59 16.07  23.1w 508823    568  C~2WX2      
2017 08  30.60899  01 56 04.498  +15 58 55.51  23.3w 508823    568  C~2WX2      
2017 09  23.37429  01 54 45.89   +15 54 54.7   22.5R 508823    G37  C~2LPi      
2017 09  23.41598  01 54 45.74   +15 54 54.0         508823    G37  C~2LPi      
2017 09  23.45735  01 54 45.55   +15 54 53.4         508823    G37  C~2LPi      

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    -0.02       0.00     0.08
  2   0.0002      0.00     0.16       0.00     0.07
  3   0.1013      0.00     0.12       0.00     0.28
  4   0.1014      0.00     0.20       0.00     0.12
  5   0.1040      0.00    -0.01       0.00     0.26
  6   0.1415      0.00    -0.14       0.00     0.22
  7   0.1417      0.00    -0.13       0.00    -0.05
  8   0.9118      0.00    -0.31       0.00     0.00
  9   0.9144      0.00    -0.22       0.00    -0.09
 10   0.9146      0.00    -0.29       0.00    -0.01
 11   1.0785      0.00    -0.13       0.00    -0.35
 12   1.0788      0.00     0.18       0.00    -0.40
 13   1.1525      0.00     0.13       0.00    -0.14
 14   1.1527      0.00    -0.53       0.00    -0.21
 15   1.2095      0.00    -0.21       0.00    -0.45
 16   1.2098      0.00    -0.28       0.00     0.08
 17   1.2205      0.00    -0.14       0.00     0.09
 18   1.2208      0.00    -0.23       0.00    -0.02
 19   4.0436      0.00    -0.05       0.00    -0.20
 20   4.0436      0.00    -0.29       0.00    -0.28
 21   4.0436      0.00     0.19       0.00    -0.02
 22   4.0585      0.00     1.01       0.00     1.00
 23   4.0586      0.00     0.89       0.00     0.97
 24   4.0586      0.00     0.92       0.00     0.93
 25   5.0321      0.00    -0.29       0.00    -0.24
 26   5.0323      0.00    -0.31       0.00     0.01
 27   7.1376      0.00    -0.01       0.00    -0.57
 28   7.1376      0.00     0.05       0.00    -0.65
 29   7.1376      0.00     0.36       0.00    -0.59
 30  10.2826      0.00    -0.34       0.00     1.07
 31  10.2830      0.00    -0.35       0.00    -1.22
 32  11.9728      0.00     0.03       0.00    -0.16
 33  11.9729      0.00    -0.09       0.00    -0.10
 34  11.9756      0.00    -0.09       0.00    -0.12
 35  11.9757      0.00    -0.12       0.00    -0.12
 36  12.0716      0.00    -0.17       0.00    -0.05
 37  12.1318      0.00     0.02       0.00    -0.08
 38  12.1373      0.00    -0.02       0.00    -0.04
 39  12.2106      0.00     0.02       0.00    -0.03
 40  12.2132      0.00     0.02       0.00    -0.06
 41  12.2273      0.00     0.01       0.00    -0.06
 42  12.2954      0.00     0.03       0.00     0.00
 43  12.2984      0.00     0.05       0.00    -0.01
 44  12.3063      0.00     0.10       0.00     0.05
 45  12.3064      0.00     0.07       0.00    -0.01
 46  12.3090      0.00     0.01       0.00    -0.11
 47  12.3091      0.00     0.03       0.00     0.03
 48  12.3093      0.00     0.14       0.00    -0.14
 49  12.8683      0.00    -0.06       0.00    -0.08
 50  12.8685      0.00    -0.08       0.00    -0.05
 51  12.8686      0.00    -0.11       0.00    -0.08
 52  12.9478      0.00    -0.06       0.00    -0.08
 53  12.9639      0.00    -0.08       0.00    -0.04
 54  12.9642      0.00    -0.01       0.00    -0.09
 55  13.0160      0.00    -0.06       0.00    -0.07
 56  13.0161      0.00    -0.04       0.00    -0.05
 57  13.0298      0.00    -0.02       0.00    -0.03
 58  13.1086      0.00     0.01       0.00     0.08
 59  13.1088      0.00     0.01       0.00     0.03
 60  13.1089      0.00    -0.01       0.00     0.03
 61  13.1119      0.00    -0.05       0.00    -0.03
 62  13.1174      0.00    -0.06       0.00     0.01
 63  13.1878      0.00     0.08       0.00    -0.03
 64  13.1882      0.00     0.08       0.00     0.01
 65  13.1907      0.00     0.06       0.00     0.01
 66  13.1907      0.00     0.04       0.00    -0.01
 67  13.1911      0.00     0.14       0.00    -0.03
 68  13.3769      0.00     0.14       0.00     0.08
 69  13.4344      0.00     0.08       0.00     0.01
 70  14.2342      0.00     0.08       0.00     0.02
 71  15.1458      0.00     0.21       0.00     0.07
 72  15.1460      0.00     0.20       0.00     0.10
 73  15.9513      0.00     0.14       0.00     0.20
 74  15.9651      0.00     0.11       0.00     0.17
 75  16.0301      0.00    -0.34       0.00     0.40
 76  16.0303      0.00    -0.05       0.00     0.31
 77  16.0304      0.00    -0.39       0.00     0.33

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.

508823    quality flag:3

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

axisobj        39.583    39.583    39.582
ecceobj         0.294     0.294     0.294
incobj         19.184    19.184    19.184
qmin           26.939    26.938    26.940
qmax           52.509    52.507    52.512
amean          39.453    39.454    39.453
amin           39.037    39.042    39.036
amax           39.934    39.974    39.919
emean           0.258     0.258     0.258
emin            0.192     0.192     0.192
emax            0.316     0.316     0.316
imean          21.227    21.226    21.227
imin           18.736    18.735    18.736
imax           23.342    23.321    23.334
excite_mean     0.446     0.446     0.446
fracstop        1.000     1.000     1.000
cjmean          2.823     2.823     2.823

libcent 0       180.2     181.4     180.7
libamp  0        66.5      66.1      65.8
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       274.6     274.5     274.5
kozaiamp         46.3      46.2      46.3