Orbit Fit and Astrometric record for 230965

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: 230965    
# Created Wed Dec 13 02:36:41 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   45 observations of   49
# Arc:  27.34y
# First observation: 1989/08/29
#  Last observation: 2016/12/29
# Chi-squared of fit:   412.62 DOF:   84 RMS:  0.54
# Min/Max residuals:    -1.51    1.87
# Exact a, adot, b, bdot, g, gdot:
  1.572855E-05  2.830509E-02  3.634780E-06  3.570681E-03  2.616333E-02 -4.149937E-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
   37.658546   46.990090    0.952575    0.202323   -0.262163  2447767.900650
# Heliocentric elements and errors
Epoch:              2447768.5000  =  1989/08/30
Mean Anomaly:          328.06507 +/-     0.000
Argument of Peri:      131.45303 +/-     0.000
Long of Asc Node:      328.69434 +/-     0.000
Inclination:            38.11919 +/-     0.000
Eccentricity:         0.25113267 +/-    0.0000
Semi-Major Axis:     47.42060971 +/-    0.0000
Time of Perihelion: 2458349.1572 +/-       0.0
Perihelion:          35.51174550 +/-    0.0000
Aphelion:            59.32947393 +/-    0.0000
Period (y)              326.5569 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           21.56344931 +/-    0.0000
Ecliptic Y           21.71858416 +/-    0.0000
Ecliptic Z           23.35167515 +/-    0.0000
Ecliptic XDOT        -0.00256154 +/-    0.0000
Ecliptic YDOT         0.00160339 +/-    0.0000
Ecliptic ZDOT         0.00003057 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.49660566 +/-    0.0000
Geocenter to KBO     38.22155561 +/-    0.0000
# Hcoef:  4.21

The following table shows the complete astrometric record for 230965. 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 (230965) followed by the observatory code and reference code for the source of the astrometry.

1989 08  29.40000  01 52 19.25   +52 15 40.8         230965    261   ~08dQ      
1989 10  04.32639  01 48 37.60   +52 29 51.3         230965    261   ~08dQ      
2004 10  18.426842 04 53 31.81   +59 54 39.1   19.8V 230965    645  C~2KIA      
2004 10  18.427671 04 53 31.81   +59 54 39.2   19.5V 230965    645  C~2KIA      
2004 10  18.430159 04 53 31.80   +59 54 39.2   20.6V 230965    645  C~2KIA      
2004 12  12.20218  04 44 45.58   +60 04 16.1   20.8R 230965    644  Cv4437      
2004 12  12.26502  04 44 44.91   +60 04 14.8   20.7R 230965    644  Cv4437      
2004 12  12.34815  04 44 44.00   +60 04 13.1   20.6R 230965    644  Cv4437      
2005 03  11.20266  04 37 53.10   +58 49 29.3         230965    644  Cv4437      
2005 03  13.14632  04 38 01.60   +58 47 36.7         230965    644  Cv4437      
2005 11  05.44191  05 06 03.13   +59 52 45.3   19.3R 230965    644  C~02dV      
2005 11  05.49512  05 06 02.66   +59 52 46.7   19.3R 230965    644  C~02dV      
2008 12  21.36814  05 41 50.55   +58 52 51.0   19.0r 230965    695  C~02dV      
2008 12  21.42710  05 41 49.90   +58 52 50.3   19.0r 230965    695  C~02dV      
2008 12  22.37490  05 41 39.59   +58 52 38.7   18.9r 230965    695  C~02dV      
2008 12  31.41515  05 40 02.71   +58 49 58.8   19.5R 230965    H06  C~02dV      
2009 01  01.41107  05 39 52.34   +58 49 35.8   20.1R 230965    H06  C~02dV      
2009 09  26.22147  06 04 51.897  +57 37 51.92  19.7V 230965    950  C~0C7x      
2009 09  26.22855  06 04 51.912  +57 37 52.27  19.7V 230965    950  C~0C7x      
2009 09  26.23563  06 04 51.920  +57 37 52.59  19.8V 230965    950  C~0C7x      
2009 11  20.41714  06 01 10.57   +58 15 47.1   19.3R 230965    688  C~0C7x      
2009 11  20.45527  06 01 10.23   +58 15 47.9         230965    688  C~0C7x      
2009 11  20.50257  06 01 09.81   +58 15 49.2         230965    688  C~0C7x      
2009 12  11.37841  05 57 43.85   +58 20 48.8   18.8R 230965    850  C~0DTx      
2009 12  11.40099  05 57 43.83   +58 20 49.7   19.6R 230965    850  C~0DTx      
2010 01  19.09548  05 51 04.56   +58 09 58.7   18.7R 230965    850  C~0DTx      
2010 01  19.13344  05 51 04.26   +58 09 56.8   19.2R 230965    850  C~0DTx      
2010 01  24.20465  05 50 20.77   +58 06 40.9   19.9R 230965    926  C~0DTx      
2010 01  24.25449  05 50 20.30   +58 06 38.9   19.3R 230965    926  C~0DTx      
2010 01  26.30987  05 50 03.64   +58 05 14.7   18.9R 230965    850  C~0DTx      
2010 01  26.33253  05 50 03.43   +58 05 14.2   19.2R 230965    850  C~0DTx      
2010 01  26.35520  05 50 03.20   +58 05 13.9   19.0R 230965    850  C~0DTx      
2011 03  11.13954  06 00 24.84   +56 51 42.9   19.0R 230965    688  C~0U2A      
2011 03  11.20025  06 00 24.96   +56 51 39.5         230965    688  C~0U2A      
2011 11  22.08310  06 27 33.06   +56 51 03.9   19.3R 230965    130  C~0bNO      
2011 11  22.08678  06 27 33.02   +56 51 03.5   19.1R 230965    130  C~0bNO      
2015 01  13.40200  06 55 48.003  +54 19 32.54  19.8w 230965    F51  C~1GbV      
2015 01  13.41451  06 55 47.830  +54 19 32.37  19.9w 230965    F51  C~1GbV      
2015 01  13.42697  06 55 47.757  +54 19 32.30  19.9w 230965    F51  C~1GbV      
2015 01  13.43953  06 55 47.581  +54 19 32.13  19.8w 230965    F51  C~1GbV      
2016 11  04.75013  07 26 08.61   +51 46 55.7   19.8R 230965    D29  C~221j      
2016 11  04.76919  07 26 08.60   +51 46 56.1   20.2R 230965    D29  C~221j      
2016 11  04.78333  07 26 08.56   +51 46 56.6   19.8R 230965    D29  C~221j      
2016 12  29.66853  07 20 02.78   +52 13 39.2   19.6R 230965    D29  C~24su      
2016 12  29.68267  07 20 02.67   +52 13 38.6   19.4R 230965    D29  C~24su      
2016 12  29.69681  07 20 02.54   +52 13 39.2   20.3R 230965    D29  C~24su      
2017 01  02.65320  07 19 25.29   +52 14 12.7   19.1R 230965    D29  C~25Mf      
2017 01  02.67264  07 19 25.18   +52 14 12.7   19.3R 230965    D29  C~25Mf      
2017 01  02.69209  07 19 24.97   +52 14 12.7   19.7R 230965    D29  C~25Mf      

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    -0.40       0.00     0.28
  2   0.0984      0.00     0.35       0.00    -0.68
  3  15.1377      0.00    -0.11       0.00    -0.50
  4  15.1377      0.00    -0.03       0.00    -0.43
  5  15.1377      0.00     0.06       0.00    -0.52
  6  15.2876      0.00     0.23       0.00     1.26
  7  15.2878      0.00     0.59       0.00     1.18
  8  15.2880      0.00     0.73       0.00     1.15
  9  15.5313      0.00    -0.79       0.00    -0.09
 10  15.5366      0.00 (  -2.26)      0.00 (  -2.75)
 11  16.1863      0.00     0.36       0.00    -0.20
 12  16.1864      0.00     0.36       0.00    -0.12
 13  19.3127      0.00    -0.23       0.00    -0.18
 14  19.3129      0.00    -0.22       0.00    -0.14
 15  19.3155      0.00    -0.21       0.00    -0.11
 16  19.3402      0.00    -0.70       0.00     0.42
 17  19.3429      0.00    -0.15       0.00     0.42
 18  20.0762      0.00    -0.42       0.00    -0.21
 19  20.0762      0.00    -0.34       0.00    -0.21
 20  20.0762      0.00    -0.36       0.00    -0.24
 21  20.2273      0.00     0.11       0.00    -0.26
 22  20.2274      0.00     0.14       0.00    -0.39
 23  20.2275      0.00     0.19       0.00    -0.22
 24  20.2847      0.00 (  -1.25)      0.00 (  -2.31)
 25  20.2847      0.00 (   2.09)      0.00 (  -1.48)
 26  20.3907      0.00     0.28       0.00     0.50
 27  20.3908      0.00     0.95       0.00    -0.02
 28  20.4047      0.00     1.22       0.00    -0.13
 29  20.4048      0.00     0.45       0.00    -0.09
 30  20.4104      0.00    -0.34       0.00     1.38
 31  20.4105      0.00    -0.78       0.00     1.87
 32  20.4106      0.00 (  -1.52)      0.00 (   2.55)
 33  21.5297      0.00    -1.51       0.00    -0.11
 34  21.5299      0.00     0.57       0.00     0.18
 35  22.2305      0.00     0.18       0.00     0.03
 36  22.2305      0.00     0.03       0.00    -0.48
 37  25.3744      0.00     0.37       0.00    -0.17
 38  25.3744      0.00    -0.36       0.00    -0.21
 39  25.3745      0.00     0.40       0.00    -0.15
 40  25.3745      0.00    -0.37       0.00    -0.19
 41  27.1851      0.00    -0.93       0.00     0.30
 42  27.1851      0.00    -0.28       0.00    -0.08
 43  27.1852      0.00    -0.29       0.00    -0.16
 44  27.3354      0.00    -0.21       0.00     0.37
 45  27.3355      0.00     0.15       0.00    -0.38
 46  27.3355      0.00     0.21       0.00     0.07
 47  27.3463      0.00    -0.16       0.00    -0.10
 48  27.3464      0.00     0.99       0.00    -0.24
 49  27.3465      0.00     0.65       0.00    -0.37

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.

230965    quality flag:2

Type:       SCATNEAR  SCATNEAR  SCATEXTD

axisobj        47.558    47.558    47.558
ecceobj         0.253     0.253     0.253
incobj         38.114    38.114    38.114
qmin           34.435    34.433    34.423
qmax           60.463    60.552    60.444
amean          47.181    47.181    47.161
amin           46.740    46.769    46.742
amax           47.727    47.722    47.671
emean           0.247     0.247     0.246
emin            0.229     0.228     0.229
emax            0.269     0.269     0.268
imean          39.266    39.266    39.273
imin           38.856    38.858    38.880
imax           39.704    39.697    39.700
excite_mean     0.679     0.679     0.679
fracstop        1.000     1.000     1.000
cjmean          2.515     2.515     2.515

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       182.1     181.6     181.0
kozaiamp        179.9     180.0     180.0