Orbit Fit and Astrometric record for 184212

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: 184212    
# Created Mon Oct 23 01:36:39 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   38 observations of   38
# Arc:  17.07y
# First observation: 2000/08/27
#  Last observation: 2017/09/23
# Chi-squared of fit:    93.13 DOF:   70 RMS:  0.28
# Min/Max residuals:    -1.00    0.69
# Exact a, adot, b, bdot, g, gdot:
  1.961585E-05  3.590127E-02  7.607065E-06  9.287695E-03  2.808643E-02 -6.218654E-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
   -5.427615  -22.661389    0.061373   -0.095256   -1.000819  2451783.685133
# Heliocentric elements and errors
Epoch:              2451784.5000  =  2000/08/28
Mean Anomaly:          356.49803 +/-     0.000
Argument of Peri:        3.85771 +/-     0.000
Long of Asc Node:      356.82450 +/-     0.000
Inclination:            15.41707 +/-     0.000
Eccentricity:         0.67683198 +/-    0.0000
Semi-Major Axis:    109.29517408 +/-    0.0000
Time of Perihelion: 2455844.3471 +/-       0.0
Perihelion:          35.32070554 +/-    0.0000
Aphelion:           183.26964262 +/-    0.0000
Period (y)             1142.6407 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           33.61833358 +/-    0.0000
Ecliptic Y          -14.09532051 +/-    0.0000
Ecliptic Z           -3.36749571 +/-    0.0000
Ecliptic XDOT         0.00086320 +/-    0.0000
Ecliptic YDOT         0.00343428 +/-    0.0000
Ecliptic ZDOT         0.00095879 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.60901130 +/-    0.0000
Geocenter to KBO     35.60455437 +/-    0.0000
# Hcoef:  7.20

The following table shows the complete astrometric record for 184212. 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 (184212) followed by the observatory code and reference code for the source of the astrometry.

2000 08  27.18439  22 44 27.30   -13 50 54.1   22.2R 184212    807  Cp0715      
2000 08  27.25941  22 44 26.92   -13 50 55.9         184212    807  Cp0715      
2004 08  13.16488  23 13 40.17   -08 28 07.9   21.8R 184212    807  Cl4405      
2004 08  13.27068  23 13 39.69   -08 28 10.4         184212    807  Cl4405      
2004 09  08.36356  23 11 32.29   -08 39 21.7   22.5R 184212    688  Cl4405      
2004 09  08.39444  23 11 32.13   -08 39 22.2         184212    688  Cl4405      
2004 09  11.24547  23 11 17.56   -08 40 34.6         184212    304  Cl4405      
2004 09  11.26462  23 11 17.46   -08 40 35.6         184212    304  Cl4405      
2004 09  17.33709  23 10 46.49   -08 43 07.9   22.4R 184212    568  Cl5765      
2004 09  17.41840  23 10 46.07   -08 43 09.7         184212    568  Cl5765      
2004 09  18.33826  23 10 41.43   -08 43 32.0         184212    568  Cl5765      
2004 10  12.16105  23 08 50.60   -08 51 42.1   23.3R 184212    695  Cl8416      
2004 10  12.27027  23 08 50.15   -08 51 44.3         184212    695  Cl8416      
2005 07  11.36620  23 22 27.60   -06 56 11.2   22.6R 184212    304  Co3997      
2005 07  11.41914  23 22 27.48   -06 56 11.5         184212    304  Co3997      
2005 08  08.15519  23 21 03.64   -07 03 50.3   21.7R 184212    807  Co3997      
2005 08  08.28877  23 21 03.08   -07 03 53.3         184212    807  Co3997      
2005 08  09.15955  23 20 59.56   -07 04 12.4         184212    807  Co3997      
2005 11  03.26436  23 14 36.64   -07 34 19.3   22.7R 184212    695  Cp0715      
2005 11  03.30613  23 14 36.51   -07 34 19.9         184212    695  Cp0715      
2007 09  11.38720  23 32 31.52   -04 30 18.0   22.1r 184212    695  Cv8645      
2007 09  11.43711  23 32 31.25   -04 30 19.3   21.8r 184212    695  Cv8645      
2007 09  17.21361  23 32 01.76   -04 32 52.2         184212    675  Cy6739      
2007 09  17.23034  23 32 01.66   -04 32 52.8         184212    675  Cy6739      
2007 09  17.26988  23 32 01.46   -04 32 53.7         184212    675  Cy6739      
2007 09  17.27953  23 32 01.41   -04 32 54.0   22.5R 184212    675  Cy6739      
2008 10  23.18688  23 36 14.41   -03 22 14.2   22.7r 184212    695  C~0gXE      
2008 10  24.18575  23 36 10.58   -03 22 31.6   22.5r 184212    695  C~0gXE      
2008 10  24.28157  23 36 10.22   -03 22 33.2   22.8r 184212    695  C~0gXE      
2008 10  30.239211 23 35 48.97   -03 24 07.0   23.0V 184212    645  C~1RYh      
2008 10  30.240040 23 35 48.96   -03 24 07.0   22.1V 184212    645  C~1RYh      
2008 10  30.242528 23 35 48.95   -03 24 07.0   23.7V 184212    645  C~1RYh      
2009 01  16.065526 23 36 25.07   -03 10 32.9   22.7V 184212    645  C~2KGK      
2009 01  16.066355 23 36 25.07   -03 10 32.9   22.3V 184212    645  C~2KGK      
2009 01  16.068843 23 36 25.08   -03 10 32.9   23.4V 184212    645  C~2KGK      
2017 09  23.34427  00 42 35.84   +09 33 14.9   22.8R 184212    G37  C~2MB6      
2017 09  23.39475  00 42 35.58   +09 33 13.9         184212    G37  C~2MB6      
2017 09  23.43406  00 42 35.36   +09 33 13.3         184212    G37  C~2MB6      

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    -0.21       0.00    -1.00
  2   0.0002      0.00     0.51       0.00    -0.31
  3   3.9616      0.00    -0.50       0.00     0.10
  4   3.9619      0.00    -0.53       0.00     0.17
  5   4.0333      0.00    -0.20       0.00    -0.06
  6   4.0334      0.00    -0.19       0.00     0.23
  7   4.0412      0.00     0.34       0.00     0.69
  8   4.0413      0.00     0.34       0.00     0.18
  9   4.0579      0.00    -0.07       0.00    -0.11
 10   4.0581      0.00    -0.08       0.00     0.08
 11   4.0607      0.00    -0.08       0.00     0.16
 12   4.1259      0.00    -0.25       0.00     0.24
 13   4.1262      0.00    -0.16       0.00    -0.22
 14   4.8711      0.00     0.39       0.00    -0.07
 15   4.8713      0.00     0.15       0.00     0.15
 16   4.9472      0.00    -0.10       0.00    -0.09
 17   4.9476      0.00    -0.24       0.00    -0.13
 18   4.9500      0.00    -0.05       0.00     0.10
 19   5.1857      0.00     0.29       0.00     0.34
 20   5.1858      0.00    -0.02       0.00    -0.02
 21   7.0396      0.00     0.04       0.00     0.22
 22   7.0397      0.00    -0.14       0.00     0.24
 23   7.0555      0.00     0.51       0.00     0.20
 24   7.0556      0.00     0.32       0.00     0.04
 25   7.0557      0.00     0.40       0.00     0.19
 26   7.0557      0.00     0.40       0.00     0.14
 27   8.1561      0.00    -0.22       0.00     0.01
 28   8.1588      0.00    -0.32       0.00    -0.04
 29   8.1591      0.00    -0.14       0.00     0.00
 30   8.1754      0.00     0.33       0.00    -0.44
 31   8.1754      0.00     0.22       0.00    -0.43
 32   8.1754      0.00     0.20       0.00    -0.40
 33   8.3884      0.00     0.07       0.00    -0.11
 34   8.3885      0.00     0.02       0.00    -0.14
 35   8.3885      0.00     0.01       0.00    -0.23
 36  17.0737      0.00     0.13       0.00    -0.19
 37  17.0738      0.00     0.13       0.00     0.02
 38  17.0739      0.00    -0.14       0.00     0.36

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.

184212    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj       110.010   110.008   110.011
ecceobj         0.679     0.679     0.679
incobj         15.407    15.407    15.407
qmin           34.271    34.194    34.329
qmax          186.880   186.952   186.864
amean         107.541   106.972   107.217
amin          105.437   103.304   103.876
amax          111.048   111.051   111.069
emean           0.672     0.668     0.669
emin            0.663     0.648     0.649
emax            0.683     0.684     0.682
imean          15.857    16.302    16.262
imin           15.570    15.407    15.763
imax           16.259    17.909    17.948
excite_mean     0.725     0.725     0.725
fracstop        1.000     1.000     1.000
cjmean          2.973     2.974     2.974

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        73.7      91.6      79.4
kozaiamp         70.2     103.8      90.0