Orbit Fit and Astrometric record for 182933

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: 182933    
# Created Mon Dec 18 02:36:39 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   68 observations of   68
# Arc:   6.17y
# First observation: 2002/04/06
#  Last observation: 2008/06/07
# Chi-squared of fit:   208.23 DOF:  130 RMS:  0.31
# Min/Max residuals:    -1.00    0.68
# Exact a, adot, b, bdot, g, gdot:
  1.505416E-05  2.473364E-02 -5.503285E-07 -1.205950E-04  2.412267E-02 -4.299166E-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
    1.040563 -137.146372    0.444713    0.016273   -0.898870  2452370.754543
# Heliocentric elements and errors
Epoch:              2452370.5000  =  2002/04/06
Mean Anomaly:          321.72146 +/-     0.000
Argument of Peri:      164.52329 +/-     0.000
Long of Asc Node:      117.32025 +/-     0.000
Inclination:             1.05405 +/-     0.000
Eccentricity:         0.23695176 +/-    0.0000
Semi-Major Axis:     50.25168875 +/-    0.0000
Time of Perihelion: 2466205.4407 +/-       0.0
Perihelion:          38.34446286 +/-    0.0000
Aphelion:            62.15891465 +/-    0.0000
Period (y)              356.2330 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -31.34559668 +/-    0.0000
Ecliptic Y          -28.47027703 +/-    0.0000
Ecliptic Z            0.75279870 +/-    0.0000
Ecliptic XDOT         0.00225835 +/-    0.0000
Ecliptic YDOT        -0.00172765 +/-    0.0000
Ecliptic ZDOT        -0.00002233 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.35186102 +/-    0.0000
Geocenter to KBO     41.45493676 +/-    0.0000
# Hcoef:  6.45

The following table shows the complete astrometric record for 182933. 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 (182933) followed by the observatory code and reference code for the source of the astrometry.

2002 04  06.25380  14 42 55.22   -14 42 16.0   21.6R 182933    807  Cf5154      
2002 04  06.38496  14 42 54.67   -14 42 13.5         182933    807  Cf5154      
2002 04  07.36517  14 42 50.70   -14 41 54.2         182933    807  Cf5154      
2002 04  11.42570  14 42 33.71   -14 40 34.1   21.6R 182933    568  Cf5154      
2002 04  11.50693  14 42 33.36   -14 40 32.5         182933    568  Cf5154      
2002 06  18.17750  14 37 46.27   -14 18 44.2   22.3R 182933    695  Ck7379      
2002 06  18.21809  14 37 46.16   -14 18 43.5   22.3R 182933    695  Ck7379      
2002 06  19.18289  14 37 43.28   -14 18 31.8         182933    695  Ck7379      
2002 06  19.25131  14 37 43.06   -14 18 30.8         182933    695  Ck7379      
2002 07  05.19971  14 37 05.59   -14 15 55.3   22.9R 182933    695  Cf8972      
2002 07  07.18570  14 37 02.31   -14 15 43.2   22.7R 182933    695  Cf8972      
2003 06  01.40584  14 44 21.08   -14 49 18.6   22.5R 182933    568  Ci1475      
2003 06  02.33478  14 44 17.31   -14 49 02.1         182933    568  Ci1475      
2003 06  02.39611  14 44 17.06   -14 49 00.9         182933    568  Ci1475      
2003 06  03.04483  14 44 14.49   -14 48 49.6         182933    309  Ci2679      
2003 06  03.09144  14 44 14.31   -14 48 49.0         182933    309  Ci2679      
2004 03  16.39822  14 55 21.40   -15 38 59.4   22.2R 182933    695  Ck4262      
2004 03  16.49033  14 55 21.20   -15 38 58.4         182933    695  Ck4262      
2004 04  16.46667  14 53 27.96   -15 30 20.2         182933    675  Ck7379      
2004 04  16.48875  14 53 27.88   -15 30 20.0         182933    675  Ck7379      
2004 05  19.27490  14 50 55.25   -15 19 08.7   22.5R 182933    688  Ck8098      
2004 05  19.35662  14 50 54.90   -15 19 07.0         182933    688  Ck8098      
2004 05  25.16685  14 50 28.70   -15 17 14.6   22.8R 182933    304  Ck8672      
2004 05  25.16854  14 50 28.70   -15 17 14.5         182933    304  Ck8672      
2004 05  25.17001  14 50 28.69   -15 17 14.4         182933    304  Ck8672      
2004 05  25.17100  14 50 28.68   -15 17 14.6         182933    304  Ck8672      
2004 05  25.17198  14 50 28.68   -15 17 14.5         182933    304  Ck8672      
2004 05  25.17296  14 50 28.68   -15 17 14.5         182933    304  Ck8672      
2004 05  25.17479  14 50 28.68   -15 17 14.4         182933    304  Ck8672      
2004 05  25.17716  14 50 28.65   -15 17 14.4         182933    304  Ck8672      
2004 05  25.17954  14 50 28.66   -15 17 14.3         182933    304  Ck8672      
2004 05  25.18192  14 50 28.64   -15 17 14.3         182933    304  Ck8672      
2004 05  25.18414  14 50 28.63   -15 17 14.2         182933    304  Ck8672      
2004 05  25.18582  14 50 28.62   -15 17 14.3         182933    304  Ck8672      
2004 05  28.02076  14 50 16.26   -15 16 21.3   22.3R 182933    304  Ck8672      
2004 05  28.04280  14 50 16.16   -15 16 21.0         182933    304  Ck8672      
2004 05  28.06502  14 50 16.05   -15 16 20.5         182933    304  Ck8672      
2004 05  28.08806  14 50 15.96   -15 16 20.2         182933    304  Ck8672      
2004 05  28.11098  14 50 15.87   -15 16 19.5         182933    304  Ck8672      
2004 05  28.16391  14 50 15.64   -15 16 18.6         182933    304  Ck8672      
2006 04  23.36036  15 04 36.73   -16 18 45.7   22.1R 182933    250  S~06I2      
2006 04  23.36476  15 04 36.70   -16 18 45.6         182933    250  S~06I2      
2006 04  23.36916  15 04 36.68   -16 18 45.5         182933    250  S~06I2      
2006 04  23.37356  15 04 36.66   -16 18 45.4         182933    250  S~06I2      
2008 01  17.28238  15 18 09.80   -17 15 47.9   23.1R 182933    250  S~06I2      
2008 01  17.29071  15 18 09.83   -17 15 48.0         182933    250  S~06I2      
2008 01  17.34974  15 18 10.03   -17 15 48.8         182933    250  S~06I2      
2008 01  17.35709  15 18 10.06   -17 15 48.8         182933    250  S~06I2      
2008 01  20.92751  15 18 21.98   -17 16 30.1         182933    250  S~06I2      
2008 01  20.93515  15 18 22.01   -17 16 30.2         182933    250  S~06I2      
2008 01  20.94279  15 18 22.03   -17 16 30.3         182933    250  S~06I2      
2008 01  20.95043  15 18 22.06   -17 16 30.4         182933    250  S~06I2      
2008 02  04.98168  15 18 58.83   -17 18 30.6         182933    250  S~06I2      
2008 02  04.98932  15 18 58.84   -17 18 30.6         182933    250  S~06I2      
2008 02  04.99696  15 18 58.85   -17 18 30.6         182933    250  S~06I2      
2008 02  05.00460  15 18 58.87   -17 18 30.7         182933    250  S~06I2      
2008 03  03.46809  15 19 07.69   -17 18 26.7         182933    695  Cy7588      
2008 03  04.42879  15 19 06.65   -17 18 21.2         182933    695  Cy7588      
2008 04  28.36698  15 16 07.03   -17 06 03.2         182933    250  S~06I2      
2008 04  28.37323  15 16 06.99   -17 06 03.0         182933    250  S~06I2      
2008 04  28.38157  15 16 06.95   -17 06 02.8         182933    250  S~06I2      
2008 04  28.39059  15 16 06.91   -17 06 02.7         182933    250  S~06I2      
2008 04  28.43296  15 16 06.71   -17 06 01.9         182933    250  S~06I2      
2008 04  28.44198  15 16 06.66   -17 06 01.7         182933    250  S~06I2      
2008 04  28.45032  15 16 06.63   -17 06 01.6         182933    250  S~06I2      
2008 04  28.45657  15 16 06.60   -17 06 01.5         182933    250  S~06I2      
2008 06  07.04128  15 12 59.55   -16 54 01.0         182933    807  Cz1638      
2008 06  07.22204  15 12 58.78   -16 53 57.9         182933    807  Cz1638      

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    -0.18       0.00     0.68
  2   0.0004      0.00     0.19       0.00    -0.03
  3   0.0030      0.00     0.62       0.00     0.26
  4   0.0142      0.00     0.61       0.00     0.02
  5   0.0144      0.00     0.66       0.00    -0.01
  6   0.1997      0.00     0.05       0.00     0.07
  7   0.1998      0.00     0.28       0.00     0.25
  8   0.2024      0.00     0.05       0.00    -0.35
  9   0.2026      0.00    -0.16       0.00    -0.21
 10   0.2463      0.00    -0.32       0.00     0.60
 11   0.2517      0.00    -0.51       0.00     0.21
 12   1.1531      0.00    -0.17       0.00     0.16
 13   1.1556      0.00    -0.28       0.00     0.23
 14   1.1558      0.00    -0.23       0.00     0.35
 15   1.1575      0.00     0.17       0.00     0.14
 16   1.1577      0.00     0.33       0.00    -0.07
 17   1.9443      0.00    -0.42       0.00    -0.01
 18   1.9445      0.00     0.36       0.00    -0.18
 19   2.0293      0.00     0.31       0.00     0.08
 20   2.0294      0.00     0.59       0.00    -0.16
 21   2.1192      0.00     0.14       0.00     0.30
 22   2.1194      0.00     0.60       0.00     0.38
 23   2.1353      0.00    -0.18       0.00    -0.14
 24   2.1353      0.00    -0.07       0.00    -0.07
 25   2.1353      0.00    -0.12       0.00     0.00
 26   2.1353      0.00    -0.20       0.00    -0.22
 27   2.1353      0.00    -0.14       0.00    -0.14
 28   2.1353      0.00    -0.07       0.00    -0.16
 29   2.1353      0.00     0.05       0.00    -0.09
 30   2.1353      0.00    -0.24       0.00    -0.14
 31   2.1353      0.00     0.07       0.00    -0.08
 32   2.1353      0.00    -0.07       0.00    -0.13
 33   2.1353      0.00    -0.07       0.00    -0.07
 34   2.1353      0.00    -0.10       0.00    -0.20
 35   2.1431      0.00    -0.11       0.00    -0.23
 36   2.1432      0.00    -0.17       0.00    -0.34
 37   2.1432      0.00    -0.36       0.00    -0.24
 38   2.1433      0.00    -0.19       0.00    -0.37
 39   2.1433      0.00    -0.03       0.00    -0.09
 40   2.1435      0.00     0.00       0.00    -0.16
 41   4.0468      0.00     0.34       0.00    -0.35
 42   4.0468      0.00     0.19       0.00    -0.34
 43   4.0469      0.00     0.19       0.00    -0.32
 44   4.0469      0.00     0.20       0.00    -0.31
 45   5.7824      0.00    -0.93       0.00     0.36
 46   5.7824      0.00    -0.91       0.00     0.36
 47   5.7826      0.00    -1.00       0.00     0.28
 48   5.7826      0.00    -0.94       0.00     0.37
 49   5.7924      0.00    -0.19       0.00    -0.02
 50   5.7924      0.00    -0.11       0.00    -0.04
 51   5.7924      0.00    -0.17       0.00    -0.05
 52   5.7925      0.00    -0.08       0.00    -0.07
 53   5.8336      0.00    -0.17       0.00    -0.08
 54   5.8336      0.00    -0.22       0.00    -0.04
 55   5.8337      0.00    -0.27       0.00    -0.00
 56   5.8337      0.00    -0.16       0.00    -0.06
 57   5.9089      0.00     0.32       0.00    -0.58
 58   5.9115      0.00     0.46       0.00    -0.36
 59   6.0619      0.00     0.39       0.00    -0.09
 60   6.0619      0.00     0.23       0.00    -0.00
 61   6.0620      0.00     0.22       0.00     0.04
 62   6.0620      0.00     0.26       0.00    -0.02
 63   6.0621      0.00     0.26       0.00    -0.01
 64   6.0621      0.00     0.15       0.00     0.02
 65   6.0621      0.00     0.29       0.00    -0.03
 66   6.0622      0.00     0.29       0.00    -0.05
 67   6.1705      0.00     0.44       0.00     0.00
 68   6.1710      0.00     0.68       0.00     0.20

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.

182933    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        50.098    50.098    50.098
ecceobj         0.238     0.238     0.238
incobj          1.054     1.054     1.054
qmin           37.774    37.769    37.808
qmax           63.876    63.875    63.804
amean          50.526    50.526    50.526
amin           50.034    50.055    50.053
amax           51.111    51.096    51.079
emean           0.238     0.238     0.238
emin            0.226     0.226     0.227
emax            0.250     0.250     0.250
imean           0.929     0.929     0.929
imin            0.508     0.508     0.508
imax            1.360     1.359     1.360
excite_mean     0.238     0.238     0.239
fracstop        1.000     1.000     1.000
cjmean          3.112     3.112     3.112

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       170.5     170.5     170.5
kozaiamp        179.9     179.9     180.0