Orbit Fit and Astrometric record for 229762

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: 229762    
# Created Wed Oct 22 01:36:51 2014
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   73 observations of   73
# Arc:  31.29y
# First observation: 1982/08/16
#  Last observation: 2013/12/01
# Chi-squared of fit:   146.53 DOF:  140 RMS:  0.25
# Min/Max residuals:    -0.76    0.98
# Exact a, adot, b, bdot, g, gdot:
  1.278685E-05  1.516173E-02  1.418033E-07 -1.465574E-03  1.800081E-02 -7.150697E-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
  -22.835814   27.248483    0.902589   -0.178946   -0.425734  2445198.269046
# Heliocentric elements and errors
Epoch:              2445198.5000  =  1982/08/17
Mean Anomaly:          322.87845 +/-     0.000
Argument of Peri:      347.14140 +/-     0.000
Long of Asc Node:      131.18186 +/-     0.000
Inclination:            23.36140 +/-     0.000
Eccentricity:         0.48670286 +/-    0.0000
Semi-Major Axis:     72.79151201 +/-    0.0000
Time of Perihelion: 2468589.1964 +/-       0.0
Perihelion:          37.36367468 +/-    0.0000
Aphelion:           108.21934934 +/-    0.0000
Period (y)              621.0539 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           46.33407454 +/-    0.0000
Ecliptic Y           22.84406016 +/-    0.0000
Ecliptic Z          -21.55972609 +/-    0.0000
Ecliptic XDOT        -0.00201806 +/-    0.0000
Ecliptic YDOT         0.00154525 +/-    0.0000
Ecliptic ZDOT         0.00021656 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   55.97820653 +/-    0.0000
Geocenter to KBO     55.55344167 +/-    0.0000
# Hcoef:  3.45

The following table shows the complete astrometric record for 229762. 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 (229762) followed by the observatory code and reference code for the source of the astrometry.

1982 08  16.76843  02 13 50.71   -10 50 56.0         229762    260   x9539      
1982 11  07.55427  02 10 07.58   -11 25 56.0         229762    260   x9539      
1993 09  23.70708  02 53 32.78   -08 12 55.4         229762    260   x9539      
1993 11  07.57343  02 50 57.83   -08 31 13.3         229762    260   x9539      
1997 09  30.72490  03 09 43.23   -06 59 39.2         229762    260   x9539      
2001 12  14.11104  03 22 36.32   -05 55 34.8   19.6R 229762    644  Cx9539      
2001 12  14.13367  03 22 36.25   -05 55 34.7   20.0R 229762    644  Cx9539      
2002 10  05.47288  03 31 37.63   -05 15 29.4   19.5R 229762    644  Cx9539      
2002 10  05.48322  03 31 37.58   -05 15 29.8   19.7R 229762    644  Cx9539      
2002 10  05.49384  03 31 37.52   -05 15 29.8   19.3R 229762    644  Cx9539      
2002 10  06.47565  03 31 34.75   -05 15 58.3   19.9R 229762    644  Cx9539      
2002 10  06.48602  03 31 34.69   -05 15 58.8   19.8R 229762    644  Cx9539      
2002 10  06.49652  03 31 34.63   -05 15 59.4   19.9R 229762    644  Cx9539      
2002 10  10.46772  03 31 22.58   -05 17 53.4   19.4R 229762    644  Cx9539      
2002 10  10.47832  03 31 22.54   -05 17 53.9   19.8R 229762    644  Cx9539      
2002 10  10.48903  03 31 22.51   -05 17 54.4   19.8R 229762    644  Cx9539      
2002 10  28.46109  03 30 18.44   -05 25 35.3   19.8R 229762    644  Cx9539      
2002 10  28.47147  03 30 18.38   -05 25 36.1   19.7R 229762    644  Cx9539      
2002 10  28.48193  03 30 18.35   -05 25 36.0   19.6R 229762    644  Cx9539      
2002 11  06.39713  03 29 42.45   -05 28 38.9   19.7R 229762    644  Cx9539      
2002 11  06.41824  03 29 42.36   -05 28 39.4   19.5R 229762    644  Cx9539      
2002 11  06.43925  03 29 42.24   -05 28 40.0   19.7R 229762    644  Cx9539      
2006 12  05.34547  03 46 32.17   -04 01 16.8   20.2R 229762    675  Cx9539      
2006 12  05.36649  03 46 32.07   -04 01 16.2   20.2R 229762    675  Cx9539      
2006 12  12.26859  03 46 03.70   -04 01 24.8   20.2R 229762    675  Cx9539      
2006 12  12.29027  03 46 03.61   -04 01 24.9   20.2R 229762    675  Cx9539      
2006 12  12.31377  03 46 03.52   -04 01 24.7   20.4R 229762    675  Cx9539      
2007 10  19.37909  03 54 41.32   -03 24 09.2   20.4R 229762    675  Cx9539      
2007 10  19.42329  03 54 41.17   -03 24 10.3   20.3R 229762    675  Cx9539      
2007 10  20.37033  03 54 37.90   -03 24 34.8   20.3R 229762    675  Cx9539      
2007 10  20.41657  03 54 37.71   -03 24 36.0   20.4R 229762    675  Cx9539      
2007 11  13.23758  03 53 02.99   -03 33 06.9         229762    675  Cx9539      
2007 11  13.29185  03 53 02.71   -03 33 07.6         229762    675  Cx9539      
2007 11  13.34666  03 53 02.49   -03 33 08.7         229762    675  Cx9539      
2007 11  14.20819  03 52 58.77   -03 33 22.4         229762    675  Cx9539      
2007 12  03.15465  03 51 35.89   -03 36 41.8         229762    675  Cx9539      
2007 12  03.20847  03 51 35.64   -03 36 41.8         229762    675  Cx9539      
2007 12  03.26258  03 51 35.42   -03 36 42.2         229762    675  Cx9539      
2007 12  03.31614  03 51 35.18   -03 36 42.6         229762    675  Cx9539      
2008 01  14.12616  03 49 08.97   -03 31 12.5         229762    675  Cx9539      
2008 01  15.09397  03 49 06.81   -03 30 52.1         229762    675  Cx9539      
2008 09  21.33657  04 00 48.782  -02 46 01.99        229762    309  C~0HEb      
2008 09  21.33793  04 00 48.783  -02 46 02.07        229762    309  C~0HEb      
2008 09  21.33904  04 00 48.784  -02 46 02.17        229762    309  C~0HEb      
2008 11  13.26346  03 57 58.49   -03 08 17.2   20.0R 229762    250  S~06BL      
2008 11  13.27041  03 57 58.46   -03 08 17.4         229762    250  S~06BL      
2008 11  13.27666  03 57 58.43   -03 08 17.5         229762    250  S~06BL      
2008 11  13.28360  03 57 58.40   -03 08 17.6         229762    250  S~06BL      
2009 01  29.80909  03 53 35.12   -02 59 48.7   20.0R 229762    130  C~03JO      
2009 11  20.32245  04 02 32.20   -02 44 21.4   19.5R 229762    688  C~0C8N      
2009 11  20.36765  04 02 32.00   -02 44 21.9         229762    688  C~0C8N      
2009 11  20.40331  04 02 31.83   -02 44 22.3         229762    688  C~0C8N      
2009 12  19.05653  04 00 27.744  -02 46 20.64  19.6R 229762    809  C~0CfW      
2009 12  19.14500  04 00 27.391  -02 46 20.28  19.5R 229762    809  C~0CfW      
2009 12  19.21328  04 00 27.107  -02 46 19.84  19.5R 229762    809  C~0CfW      
2009 12  20.06432  04 00 23.755  -02 46 15.60  19.3R 229762    809  C~0CfW      
2009 12  20.14858  04 00 23.425  -02 46 15.34  19.6R 229762    809  C~0CfW      
2009 12  20.22391  04 00 23.123  -02 46 14.80  19.7R 229762    809  C~0CfW      
2012 12  15.07194  04 16 21.19   -01 27 13.7   19.3R 229762    304  C~0sv9      
2012 12  15.17499  04 16 20.74   -01 27 13.5         229762    304  C~0sv9      
2012 12  15.29009  04 16 20.23   -01 27 13.4         229762    304  C~0sv9      
2012 12  16.11514  04 16 16.68   -01 27 11.8         229762    304  C~0sv9      
2012 12  16.22177  04 16 16.22   -01 27 11.5         229762    304  C~0sv9      
2012 12  16.29377  04 16 15.90   -01 27 11.4         229762    304  C~0sv9      
2012 12  18.17352  04 16 07.89   -01 27 06.0         229762    304  C~0sv9      
2012 12  18.20583  04 16 07.75   -01 27 05.9         229762    304  C~0sv9      
2012 12  18.28641  04 16 07.40   -01 27 05.7         229762    304  C~0sv9      
2012 12  20.08318  04 15 59.87   -01 26 58.7         229762    304  C~0sv9      
2012 12  20.13049  04 15 59.67   -01 26 58.2         229762    304  C~0sv9      
2012 12  20.24072  04 15 59.21   -01 26 57.7         229762    304  C~0sv9      
2013 12  01.58328  04 22 46.62   -00 59 14.2   19.5R 229762    D29  C~0y2k      
2013 12  01.59919  04 22 46.59   -00 59 14.9   19.9R 229762    D29  C~0y2k      
2013 12  01.61510  04 22 46.47   -00 59 14.8   19.5R 229762    D29  C~0y2k      

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    -0.20       0.00    -0.28
  2   0.2267      0.00    -0.22       0.00     0.18
  3  11.1046      0.00     0.34       0.00    -0.16
  4  11.2274      0.00     0.27       0.00    -0.33
  5  15.1238      0.00    -0.03       0.00     0.54
  6  19.3274      0.00    -0.18       0.00    -0.25
  7  19.3275      0.00    -0.01       0.00    -0.23
  8  20.1361      0.00     0.22       0.00    -0.12
  9  20.1361      0.00    -0.07       0.00    -0.22
 10  20.1361      0.00    -0.50       0.00     0.09
 11  20.1388      0.00     0.62       0.00     0.35
 12  20.1389      0.00     0.18       0.00     0.16
 13  20.1389      0.00    -0.25       0.00    -0.14
 14  20.1498      0.00     0.13       0.00     0.15
 15  20.1498      0.00     0.04       0.00    -0.05
 16  20.1498      0.00     0.10       0.00    -0.24
 17  20.1990      0.00     0.09       0.00     0.05
 18  20.1991      0.00    -0.19       0.00    -0.52
 19  20.1991      0.00    -0.02       0.00    -0.19
 20  20.2235      0.00     0.14       0.00     0.23
 21  20.2235      0.00     0.11       0.00     0.12
 22  20.2236      0.00    -0.37       0.00    -0.09
 23  24.3027      0.00     0.08       0.00     0.31
 24  24.3028      0.00    -0.08       0.00     0.98
 25  24.3217      0.00     0.11       0.00     0.31
 26  24.3218      0.00     0.08       0.00     0.18
 27  24.3218      0.00     0.17       0.00     0.36
 28  25.1735      0.00    -0.18       0.00     0.28
 29  25.1736      0.00    -0.10       0.00     0.33
 30  25.1762      0.00     0.09       0.00     0.46
 31  25.1763      0.00    -0.29       0.00     0.46
 32  25.2415      0.00     0.34       0.00     0.07
 33  25.2417      0.00    -0.29       0.00     0.25
 34  25.2418      0.00     0.02       0.00     0.04
 35  25.2442      0.00     0.06       0.00     0.03
 36  25.2961      0.00    -0.02       0.00    -0.42
 37  25.2962      0.00    -0.25       0.00    -0.15
 38  25.2964      0.00     0.01       0.00    -0.27
 39  25.2965      0.00    -0.07       0.00    -0.41
 40  25.4110      0.00    -0.20       0.00    -0.76
 41  25.4136      0.00    -0.07       0.00    -0.24
 42  26.0987      0.00    -0.05       0.00     0.18
 43  26.0988      0.00     0.00       0.00     0.14
 44  26.0988      0.00     0.04       0.00     0.08
 45  26.2437      0.00     0.27       0.00    -0.01
 46  26.2437      0.00     0.28       0.00    -0.10
 47  26.2437      0.00     0.23       0.00    -0.10
 48  26.2437      0.00     0.24       0.00    -0.09
 49  26.4560      0.00     0.84       0.00     0.12
 50  27.2623      0.00    -0.06       0.00    -0.05
 51  27.2624      0.00     0.01       0.00     0.02
 52  27.2625      0.00    -0.13       0.00     0.06
 53  27.3410      0.00     0.12       0.00     0.18
 54  27.3412      0.00     0.20       0.00     0.13
 55  27.3414      0.00     0.07       0.00     0.25
 56  27.3437      0.00     0.10       0.00     0.30
 57  27.3440      0.00     0.21       0.00     0.12
 58  27.3442      0.00     0.20       0.00     0.26
 59  30.3307      0.00    -0.11       0.00    -0.19
 60  30.3310      0.00    -0.05       0.00    -0.15
 61  30.3313      0.00    -0.11       0.00    -0.24
 62  30.3336      0.00    -0.09       0.00    -0.20
 63  30.3339      0.00     0.01       0.00    -0.13
 64  30.3341      0.00    -0.09       0.00    -0.19
 65  30.3392      0.00     0.01       0.00    -0.11
 66  30.3393      0.00     0.00       0.00    -0.12
 67  30.3395      0.00    -0.06       0.00    -0.20
 68  30.3445      0.00    -0.02       0.00    -0.42
 69  30.3446      0.00    -0.01       0.00    -0.13
 70  30.3449      0.00     0.08       0.00    -0.14
 71  31.2931      0.00     0.10       0.00     0.43
 72  31.2932      0.00     0.77       0.00    -0.16
 73  31.2932      0.00     0.09       0.00     0.05

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.

229762    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        74.503    74.502    74.504
ecceobj         0.493     0.493     0.493
incobj         23.355    23.355    23.355
qmin           35.621    35.831    35.860
qmax          113.759   113.614   113.002
amean          73.710    73.579    73.369
amin           72.603    72.461    72.237
amax           75.193    75.076    74.897
emean           0.498     0.496     0.493
emin            0.481     0.480     0.477
emax            0.516     0.513     0.511
imean          21.193    21.344    21.399
imin           20.148    20.560    20.500
imax           22.123    22.261    22.465
excite_mean     0.615     0.615     0.614
fracstop        1.000     1.000     1.000
cjmean          2.939     2.938     2.939

libcent 0      -180.0    -180.0    -180.0
libamp  0      -180.0    -180.0    -180.0
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       163.5     179.8     176.1
kozaiamp        179.9     179.9     179.9