Orbit Fit and Astrometric record for 385446

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: 385446    
# Created Mon Oct 23 01:36:45 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   54 observations of   54
# Arc:  10.24y
# First observation: 2003/08/25
#  Last observation: 2013/11/20
# Chi-squared of fit:   444.93 DOF:  102 RMS:  0.51
# Min/Max residuals:    -1.38    1.46
# Exact a, adot, b, bdot, g, gdot:
  1.506789E-05  2.083035E-02 -8.395157E-07 -2.713240E-05  2.271061E-02 -2.243594E-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
   -2.726519  -22.951617    0.098491   -0.048008   -1.009225  2452876.734503
# Heliocentric elements and errors
Epoch:              2452876.5000  =  2003/08/25
Mean Anomaly:          259.00113 +/-     0.000
Argument of Peri:       22.00122 +/-     0.000
Long of Asc Node:       68.49096 +/-     0.000
Inclination:             2.66667 +/-     0.000
Eccentricity:         0.11571824 +/-    0.0000
Semi-Major Axis:     43.53714528 +/-    0.0000
Time of Perihelion: 2482314.0968 +/-       0.0
Perihelion:          38.49910329 +/-    0.0000
Aphelion:            48.57518728 +/-    0.0000
Period (y)              287.2752 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           41.38995318 +/-    0.0000
Ecliptic Y          -17.63157104 +/-    0.0000
Ecliptic Z           -2.09461262 +/-    0.0000
Ecliptic XDOT         0.00072507 +/-    0.0000
Ecliptic YDOT         0.00241207 +/-    0.0000
Ecliptic ZDOT         0.00000977 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.03769845 +/-    0.0000
Geocenter to KBO     44.03238991 +/-    0.0000
# Hcoef:  6.50

The following table shows the complete astrometric record for 385446. 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 (385446) followed by the observatory code and reference code for the source of the astrometry.

2003 08  25.23376  22 39 11.59   -11 27 14.7   21.6R 385446    807  Ci4592      
2003 08  25.33868  22 39 11.12   -11 27 17.5         385446    807  Ci4592      
2003 09  03.06904  22 38 33.66   -11 30 58.5   22.7R 385446    304  Ci4592      
2003 09  03.29799  22 38 32.63   -11 31 03.9         385446    304  Ci4592      
2003 10  23.06714  22 35 33.90   -11 47 04.7   23.0R 385446    304  Ci9432      
2003 10  23.09793  22 35 33.83   -11 47 04.8         385446    304  Ci9432      
2004 07  16.33143  22 46 05.21   -10 45 03.4   22.1R 385446    807  Co3932      
2004 07  16.38293  22 46 05.05   -10 45 04.6         385446    807  Co3932      
2004 10  12.13108  22 40 30.33   -11 18 31.2   22.8R 385446    695  Cr8411      
2004 10  12.23634  22 40 29.99   -11 18 32.6         385446    695  Cr8411      
2005 08  08.10293  22 49 20.74   -10 26 12.5   21.8R 385446    807  Co3932      
2005 08  08.21996  22 49 20.27   -10 26 15.6         385446    807  Co3932      
2005 08  09.10840  22 49 16.90   -10 26 37.6         385446    807  Co3932      
2006 07  25.37402  22 54 39.93   -09 53 15.4   22.9R 385446    250  S~06Ad      
2006 07  25.37842  22 54 39.91   -09 53 15.5         385446    250  S~06Ad      
2006 07  25.38722  22 54 39.88   -09 53 15.7         385446    250  S~06Ad      
2006 07  28.33854  22 54 30.57   -09 54 19.5   22.8R 385446    304  Cr5531      
2006 07  28.39394  22 54 30.38   -09 54 20.5         385446    304  Cr5531      
2007 07  25.13168  22 59 12.51   -09 25 09.0   23.4R 385446    250  S~06Ad      
2007 07  25.14001  22 59 12.49   -09 25 09.2         385446    250  S~06Ad      
2007 07  25.14765  22 59 12.47   -09 25 09.4         385446    250  S~06Ad      
2007 07  25.18723  22 59 12.35   -09 25 10.2         385446    250  S~06Ad      
2007 08  26.55946  22 57 12.22   -09 38 21.3         385446    250  S~06Ad      
2007 08  26.56709  22 57 12.19   -09 38 21.5         385446    250  S~06Ad      
2007 08  26.57473  22 57 12.16   -09 38 21.7         385446    250  S~06Ad      
2007 08  26.58237  22 57 12.13   -09 38 21.9         385446    250  S~06Ad      
2007 09  12.35681  22 56 00.48   -09 45 40.5   22.7r 385446    695  Cv8576      
2007 09  12.40050  22 56 00.31   -09 45 41.2   23.0r 385446    695  Cv8576      
2007 10  11.13460  22 54 08.03   -09 56 21.2   23.0R 385446    688  Cw0394      
2007 10  11.21226  22 54 07.76   -09 56 22.7         385446    688  Cw0394      
2008 08  04.75518  23 03 07.82   -09 01 04.0         385446    250  S~06Ad      
2008 08  04.76143  23 03 07.79   -09 01 04.1         385446    250  S~06Ad      
2008 08  04.76907  23 03 07.76   -09 01 04.3         385446    250  S~06Ad      
2008 08  04.77810  23 03 07.73   -09 01 04.5         385446    250  S~06Ad      
2008 08  04.82254  23 03 07.57   -09 01 05.6         385446    250  S~06Ad      
2008 08  04.83226  23 03 07.54   -09 01 05.8         385446    250  S~06Ad      
2008 08  04.83990  23 03 07.52   -09 01 06.0         385446    250  S~06Ad      
2008 08  04.84615  23 03 07.50   -09 01 06.1         385446    250  S~06Ad      
2008 08  20.60379  23 02 07.17   -09 07 43.2         385446    250  S~06Ad      
2008 08  20.61004  23 02 07.14   -09 07 43.3         385446    250  S~06Ad      
2008 08  20.61837  23 02 07.10   -09 07 43.5         385446    250  S~06Ad      
2008 08  20.62740  23 02 07.07   -09 07 43.8         385446    250  S~06Ad      
2008 08  20.67046  23 02 06.89   -09 07 44.9         385446    250  S~06Ad      
2008 08  20.68018  23 02 06.85   -09 07 45.2         385446    250  S~06Ad      
2008 08  20.68851  23 02 06.82   -09 07 45.4         385446    250  S~06Ad      
2008 08  20.69476  23 02 06.80   -09 07 45.5         385446    250  S~06Ad      
2013 11  20.66260  23 19 51.51   -07 11 27.7   23.4R 385446    250  S~0yM9      
2013 11  20.66588  23 19 51.51   -07 11 27.7         385446    250  S~0yM9      
2013 11  20.67026  23 19 51.50   -07 11 27.7         385446    250  S~0yM9      
2013 11  20.67516  23 19 51.50   -07 11 27.7         385446    250  S~0yM9      
2013 11  20.68005  23 19 51.49   -07 11 27.7         385446    250  S~0yM9      
2013 11  20.68495  23 19 51.49   -07 11 27.8         385446    250  S~0yM9      
2013 11  20.73032  23 19 51.44   -07 11 27.9         385446    250  S~0yM9      
2013 11  20.73360  23 19 51.44   -07 11 27.9         385446    250  S~0yM9      

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    -0.04       0.00    -0.10
  2   0.0003      0.00    -0.36       0.00     0.01
  3   0.0242      0.00    -0.55       0.00     1.11
  4   0.0248      0.00    -1.01       0.00     1.46
  5   0.1611      0.00    -0.08       0.00    -0.26
  6   0.1612      0.00    -0.02       0.00    -0.04
  7   0.8928      0.00     0.32       0.00     0.12
  8   0.8929      0.00     0.08       0.00    -0.09
  9   1.1332      0.00     0.10       0.00    -0.21
 10   1.1335      0.00    -0.05       0.00     0.01
 11   1.9545      0.00     0.58       0.00    -0.17
 12   1.9548      0.00     0.31       0.00    -0.37
 13   1.9572      0.00     0.57       0.00    -0.44
 14   2.9162      0.00     0.48       0.00    -0.54
 15   2.9162      0.00     0.39       0.00    -0.54
 16   2.9162      0.00     0.34       0.00    -0.56
 17   2.9243      0.00     0.78       0.00    -0.18
 18   2.9245      0.00     0.69       0.00     0.04
 19   3.9148      0.00     0.44       0.00    -0.32
 20   3.9149      0.00     0.52       0.00    -0.35
 21   3.9149      0.00     0.56       0.00    -0.39
 22   3.9150      0.00     0.53       0.00    -0.36
 23   4.0036      0.00     0.28       0.00    -0.18
 24   4.0037      0.00     0.31       0.00    -0.18
 25   4.0037      0.00     0.34       0.00    -0.18
 26   4.0037      0.00     0.37       0.00    -0.18
 27   4.0496      0.00     0.57       0.00     0.04
 28   4.0497      0.00     0.85       0.00     0.45
 29   4.1284      0.00     0.68       0.00     0.29
 30   4.1286      0.00     0.62       0.00     0.19
 31   4.9460      0.00     0.43       0.00     0.06
 32   4.9460      0.00     0.31       0.00     0.11
 33   4.9460      0.00     0.26       0.00     0.09
 34   4.9460      0.00     0.29       0.00     0.11
 35   4.9462      0.00     0.23       0.00     0.07
 36   4.9462      0.00     0.29       0.00     0.10
 37   4.9462      0.00     0.39       0.00     0.08
 38   4.9462      0.00     0.42       0.00     0.13
 39   4.9894      0.00    -1.22       0.00    -0.05
 40   4.9894      0.00    -1.29       0.00     0.02
 41   4.9894      0.00    -1.38       0.00     0.04
 42   4.9894      0.00    -1.28       0.00    -0.03
 43   4.9896      0.00    -1.34       0.00     0.00
 44   4.9896      0.00    -1.35       0.00    -0.04
 45   4.9896      0.00    -1.29       0.00    -0.02
 46   4.9896      0.00    -1.21       0.00     0.04
 47  10.2407      0.00     0.09       0.00     0.02
 48  10.2407      0.00     0.14       0.00     0.02
 49  10.2408      0.00     0.06       0.00     0.03
 50  10.2408      0.00     0.13       0.00     0.05
 51  10.2408      0.00     0.06       0.00     0.06
 52  10.2408      0.00     0.13       0.00    -0.03
 53  10.2409      0.00     0.06       0.00    -0.02
 54  10.2409      0.00     0.11       0.00    -0.02

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.

385446    quality flag:3

Type:         7:4EEE    7:4EEE    7:4EEE

axisobj        43.943    43.943    43.943
ecceobj         0.114     0.114     0.114
incobj          2.667     2.667     2.667
qmin           38.236    38.236    38.237
qmax           49.573    49.565    49.605
amean          43.727    43.727    43.727
amin           43.322    43.336    43.325
amax           44.157    44.178    44.158
emean           0.110     0.110     0.110
emin            0.097     0.097     0.097
emax            0.123     0.123     0.124
imean           1.140     1.139     1.142
imin            0.238     0.240     0.237
imax            1.890     1.889     1.890
excite_mean     0.112     0.112     0.112
fracstop        1.000     1.000     1.000
cjmean          3.083     3.083     3.083

libcent 0       180.2     179.7     181.1
libamp  0       109.8     109.1     111.0
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       139.0     137.6     140.3
kozaiamp        179.5     179.5     179.5